This folder evaluates the CIPs that act on the fee layer of the Cardano reward pipeline — the operator/member split that runs after the SL-D1 reward formula has already produced a per-pool allocation. The reward envelope itself is left untouched by these candidates; what changes is how the resulting pool reward is divided between the operator's take and the delegators' share.
The two CIPs in scope (CIP-0023, CIP-0082) target the priority-1 problem the mainnet diagnostic identifies for any V2 reform: small-operator viability. Today, 73 % of productive pools sit below the ~3 M ADA viability line, and no single-pool retail operator earns a competitive wage — the median 12 410 ADA/yr covers infrastructure but not 5–15 hours/month of skilled labour. Both CIPs correctly identify this population as the target. They differ on the instrument used (margin floor vs rate floor) and whether minPoolCost survives the reform.
CIP-0082's stages 3–4 raise the protocol parameter k (target pool count). k is not itself a CIP — it is a transversal protocol parameter, raised here as part of the four-stage package. The standalone k-lever analysis that supports the verdict on those stages lives in cip-0082.md §B.3. The same analysis applies to any future k-recalibration proposal — not only to CIP-0082.
Verdict on both CIPs: no-go, for one structural reason.
The two CIPs correctly identify the target — small-operator viability — but mechanically they address ROS attractiveness, not profitability structure. Both act on fee-layer pricing (flat-fee reduction, margin / rate floors) to make small pools more ROS-attractive to delegators. But neither revises the reward-distribution formula itself. For a hollow pool below saturation, pool reward still scales linearly with pool stake ($\hat f' = R \lambda_{\text{size}} \sigma_{\text{rel}}$). Small-operator absolute profitability therefore changes only if delegation actually migrates from large pools to small ones — the fee reform by itself does not raise what a small-pool operator earns at constant size.
The redistribution bet is unevidenced. Both CIPs implicitly depend on that migration. The diagnostic does not support it: delegation is not sticky, but not clearly yield-following either — the observed flow tracks brand, wallet integration, and visibility. There is no mainnet signal that the migration will occur at the scale the CIPs need.
If the migration does not happen, the reforms invert their intent. Without the redistribution, fee-layer tightening produces the opposite outcome of what the CIPs target: it fragilises the small-operator population (sub-reliable operator revenue cut −9× under the Margin swap, while remaining below the ~28 600 ADA/yr cost floor); it amplifies multi-pool operator concentration (the transfer compounds with fleet size — +200 K ADA/yr per 11+ pool entity vs −11 K ADA/yr per sub-reliable single-pool operator); and it amplifies profit disparity because proportional margin rules scale operator take linearly with pool reward.
A principled separation — abstract viability from pricing. minPoolCost (flat fee / fixed cost) and minPoolRate / poolRate (rate / commission) are pricing tools. Operators should remain free to set them to compete on an open market; the pricing signal is what delegators read to distinguish between operators. The viability floor (the minimum income a productive operator needs to cover operational cost) is a different function and belongs on a different layer. Conflating them — as CIP-0023 and CIP-0082 do by using pricing floors to bolt viability into the fee structure — forces every operator into the same pricing regime whether they need the floor or not, and weakens the pricing signal. A V2 design should:
- Keep pricing tools (flat fee + rate) fully flexible as competitive levers.
- Engineer the viability floor elsewhere — on the reward-distribution layer (pre-split), not on the fee-split layer (post-split). Stake-cap instruments (
../pools-distribution/) reshape the reward-eligible stake before the formula applies; a dedicated viability primitive is an open design question.
Table of Contents
1. Fee-layer parameters
The fee-split formula has three parameters with distinct roles:
| Parameter | Type | Current role |
|---|---|---|
minPoolCost |
Absolute ADA fixed-fee floor | Deducted from per-pool allocation before the margin split — produces the $1/\sigma$ regressivity hyperbola |
minPoolMargin (CIP-0023) |
Relative % margin floor | Applied after minPoolCost; targets a floor on operator take |
minPoolRate (CIP-0082 stage 2) |
Proportional rate floor | Replaces minPoolCost under the 4-stage reform; flat 3 % rate everywhere |
Table 1.1 — Fee-layer parameters. minPoolCost is a pricing tool used today as a viability backstop; minPoolMargin and minPoolRate are the same primitive (a margin floor) at two different calibrations.
Reading aid — what the n-MPO axis means. n = how many pools an operator runs as a single entity. n = 1 means a single-pool operator; n ≥ 11 means an entity controlling 11 or more pools. Findings labelled "n-MPO" measure the per-entity effect across that axis — i.e. how a reform's revenue impact compounds with fleet size. The nine-tier pool-size taxonomy (Dormant → Saturated → Oversaturated) and the n-MPO bracketing are the two reference axes used throughout the per-CIP files.
2. The two candidates
| Candidate | Instrument | Verdict | Per-CIP file | Source |
|---|---|---|---|---|
| CIP-0023 — Fair Min Fees | minPoolMargin floor (no hard fork) |
No-go as standalone — same instrument as CIP-0082 stage 2 with smaller calibration | cip-0023.md |
CIP-0023 · PR #66 |
| CIP-0082 — Improved Rewards Scheme Parameters | 4-stage: minPoolCost halving (done) → minPoolRate = 3 % (HFC) → k-raises |
No-go as standalone — stage 2 inverts operator revenue, stages 3–4 fire in the wrong regime | cip-0082.md |
CIP-0082 |
Table 2.1 — The two fee-layer CIPs and the verdict carried in their per-CIP files.
Mechanical relation between the two CIPs. CIP-0082 stage 2 is mechanically equivalent to a paired variant of CIP-0023 (reduction of minPoolCost + introduction of a margin floor) — at the extreme calibration: cost taken to zero, rate set to 3 % (vs CIP-0023's illustrative 50 ADA + 1.5 %). The CIP-0082 author credits CIP-0023 explicitly. As live governance items, CIP-0023 standalone is subsumed by CIP-0082 stage 2 unless governance explicitly declines the hard fork that stage 2 requires.
On the k-raise embedded in CIP-0082 stages 3–4. The standalone analysis of the k lever — its mechanical effect on the split, its delegator-market assumptions, and its structural limits — lives in cip-0082.md §B.3. It is independently citable from any future k-recalibration proposal because the analysis does not depend on stage 2 being in scope.
3. Reading order
cip-0023.md— narrower instrument, single parameter, clearer historical lineage. Start here: every structural finding on the margin-floor mechanism carries into CIP-0082 stage 2.cip-0082.md— broader 4-stage reform that subsumes and extends the CIP-0023 intent. Stage 2 is CIP-0023's paired variant at harsher calibration; stages 3–4 are pool-count expansions.
The standalone k-lever deep dive in cip-0082.md §B.3 supports the §3 verdict on stages 3–4 and does not need to be read separately.
4. References
- Folder parent:
../README.md— solution-evaluation landing + cross-CIP conclusion. - Cross-layer subfolder:
../pools-distribution/README.md— stake-cap-layer evaluations (the principled home for a viability backstop). - Standalone k-lever deep dive: cip-0082.md §B.3 — supports CIP-0082's §3 verdict on stages 3–4 and remains independently citable for future k-recalibration proposals.
- Diagnostic anchors:
- Operator-delegator distribution — fee-rate hyperbola, no-competitive-wage finding, n-MPO brackets.
- Pools distribution — nine-tier pool-size taxonomy, viability and production thresholds.
Status: Active 2026/04/23. Subfolder of
../README.md. Candidates that act on the fee layer of the Cardano reward pipeline.
CEN.O1
Multi-pool entities flourished (23 → 85 entities, 65% → 76% of productive stake) while single-pool operators struggle (555 → 291 pools, 39% → 24% of stake)
The designed entry → growth → established path is no longer observable. The productive set tracks a 700–1,000 band since epoch 300 (733 pools at epoch 623 as the threshold rises with total stake), with only 1.7% turnover per epoch — but composition has hardened underneath that flat aggregate. 83 attributed entities control 76.7% of productive stake (12 with 11+ pools alone hold 41.0%); multi-pool fleets grew from 23 to 85 while single-pool operators contracted from 39.1% to 24.4% of stake.
Three quarters of registered pools are economically irrelevant. 2,144 of 2,877 (75%) sit below the production threshold (~3M ADA) and together hold only 2.7% of stake · Three quarters of productive stake sits in 83 named entities. They control 76.7% through 449 productive pools (71 strict multi-pool + 12 attributed single-pool) — and the count is a lower bound (operators using fully separate per-pool infrastructure stay invisible)
9 findings
CEN.O2
When a Titan delegator switches pools, the whole pool moves with them — whale-funded pools swing ±20% between epochs (1 in 5 swings >50%) while retail pools barely move (±8%)
A pool's stake stability depends on who its delegators are — not on the market segment it competes in. In whale-funded pools (the 28 custodial-by-delegation pools, where the typical delegator holds ≥ 100K ₳), a single Titan-tier address (10M+ ₳) is large enough that when they move, the whole pool moves: stake swings ~±20% between epochs, and 1 in 5 of them swings more than 50%. The operator loses revenue predictability and the remaining delegators see their block-production rhythm wobble. Retail pools (broad small-delegator base) absorb churn smoothly — they only move ±8% between epochs. Custodial-by-extraction pools (≥ 99% margin) barely budge (±7%) because their delegators are locked in by inertia. What looks like delegator activity in the aggregate is mostly a handful of institutional treasuries shifting capital.
A single Titan delegator moving in or out can shake a whole pool — whale-funded pools swing ~±20% between epochs vs ±8% for retail. In the 28 custodial-by-delegation pools (typical delegator holds ≥ 100K ₳), stake moves by roughly ±20% between epochs, with 21% of them swinging by more than 50% — these are pools where a single address is large enough that its movement dominates the variance. Retail (809 pools, broad small-delegator base) is mostly stable (±8%) — no single delegator can move the pool. Custodial-by-extraction (79 pools, ≥99% margin) is the most inert (±7%) — stagnation, not active management
1 finding
CEN.O3
The delegator population is wildly skewed in stake — 1,000 of 1.36M delegators (0.07%) hold 57% of staked ADA, and 9× population growth has not shifted the shape
The delegator population is shaped like a power-law tail — almost all the staked capital sits in a tiny upper sub-population. Of the 1.36M active delegators, 1,000 (0.07%) hold 57% of staked ADA; the top 10,000 (0.74%) hold 79.2%; Gini = 0.976 — more concentrated than US wealth (~0.85) and comparable to the most unequal asset distributions in financial markets. The median delegator holds just 32 ADA while the mean is 16,055 ADA — a 500× gap that quantifies the skew. The population has grown 9× since epoch 300 without changing its shape: every cohort of new entrants has joined at the bottom of the distribution, leaving the top-1% share locked at 78–82%.
Half the delegator base stakes less than a single transaction fee at peak congestion. Median: 32 ADA. Mean: 16,055 ADA. The 500× gap measures the skewness of a power-law distribution where each tier above 10K ADA holds roughly 20% of total stake despite containing exponentially fewer delegators · The delegator population's stake is concentrated in its top 0.07%. 1,000 delegators (0.07% of the 1.36M population) hold 57% of staked ADA; the top 10,000 (0.74%) hold 79.2%. Gini = 0.976 — more concentrated than US wealth (~0.85) and comparable to the most unequal asset distributions observed in financial markets
3 findings
CEN.O4
Most delegators stay put for years — 42% have stuck with the same pool for 2.7+ years, only 21% switch within 25 days, and the population's switching rate is 75% below early Shelley
The delegator population settled long ago — most of it doesn't move. Tenure splits the population cleanly into three sub-groups: 42% have stayed with the same pool for 2.7+ years (201+ epochs), 21% switch within 25 days (≤ 5 epochs), 37% sit in the middle (somewhere between). Aggregate switching has collapsed 75% from 2,000–3,500 redelegations per epoch in early Shelley to 600–800 today — three regimes: experimentation → middle → mature. And almost all of that switching comes from the retail population: custodial and private pools barely move.
Pool-switching collapsed 75% from early Shelley. Redelegations fell from 2,000–3,500 per epoch (early Shelley experimentation) to 600–800 today — three regimes: experimentation (epochs 210–260) → middle period with hard-fork spikes (260–500) → mature settled market (500+) · The base splits cleanly into stickers and switchers, with a thin middle. 42% loyal (201+ epochs, > 2.7 years), 21% volatile (≤ 5 epochs, < 25 days), 37% moderate. The loyal majority anchors pool economics; the volatile tail generates the bulk of the churn signal
3 findings
CEN.O5
The bigger the delegation, the more it moves — whales (1M+ ₳) hold 65% of the staked supply and switch ~4× more often than small delegators
The bigger the delegation, the more often it moves. The smallest delegators (< 1K ₳) average just 0.67 pool switches over their lifetime — they delegate once and forget. Whales (1M+ ₳) average 3.06 switches — about 4–5× more. And whales hold 14.1B of the 21.8B staked supply (65%) — yet only 38% of that capital sits in long-term (201+ epoch) delegations. The bulk of the network's staked capital sits in the hands of its most actively-managed delegations. Pool operators depending on a few whale delegators therefore face structurally higher stake instability than those with a broad retail base.
Whales switch 4–5× more often than micro-delegators. Lifetime switches: <1K = 0.67, 1K–10K = 0.95, 10K–100K = 1.64, 100K–1M = 2.65, 1M+ = 3.06. Loyal share (201+ epochs): <1K = 82%, 1M+ = 39%. Switching intensity scales monotonically with stake size — small delegators delegate once and forget; large delegators actively manage their position · Most of the network's staked capital sits in delegations that move. Whales (1M+) hold 14.1B of the 21.8B staked total (65%), yet only 38% of that stake sits in loyal (201+ epoch) delegations — the rest distributes across moderate and volatile tenures. Pool operators dependent on a few large delegations face structurally higher stake instability than those with a broad base of small loyal delegators
2 findings
CEN.O6
The delegator population doesn't shop on price — half their switches produce zero yield change, switch direction is balanced (30.8% cheaper / 31.5% pricier), and 92% of long-term delegators sit in the cheapest 0–5% margin band
The delegator population behaves like passive parkers, not yield-shoppers. When delegators do switch, half (50.5%) land in pools with statistically indistinguishable yield (±5 bps; median ROS differential +0.02 bps — well below any threshold a delegator could observe). Switch direction is symmetric too: 30.8% go cheaper / 37.7% stay flat / 31.5% go pricier — no fee-chasing pattern. The one asymmetric move is by pool size (the population drifts toward larger pools regardless of price). And 92.1% of long-term delegators (201+ epochs) sit in the cheapest 0–5% margin band — the cheapest pools are also the stickiest, so loyalty and low fees coexist, they don't trade off. The DeFi sub-population is essentially absent: 99.83% of staked ADA is key-based; only 38M ADA across 399 script addresses is held by smart contracts.
Delegators cannot see what they're paying for — the yield signal is too flat to act on. Half of all switches (50.5%) produce zero yield change (±5 bps); the median ROS differential is +0.02 bps with an interquartile range of −0.47 to +0.55 bps. The signal is an order of magnitude below any threshold a delegator could observe, let alone optimise against · Operator take direction is balanced — no fee-chasing pattern is detectable. 30.8% of switches go to a cheaper pool, 31.5% to a more expensive one, 37.7% land at the same take. The take × ROS matrix's diagonal dominates (lower take → better ROS at 18.4%, similar → similar at 25.6%, higher → worse at 16.5%) — confirming take and ROS are two views of one signal, and that signal is too flat to drive behaviour
5 findings
CEN.O7
The non-participant population is 39.8 % of the supply, structurally inert, and held by a tightly-concentrated minority of custodians and legacy holders
The non-participant population — addresses controlling ADA that is not delegated to any pool — has been stable at 36–39 % of circulation for over 300 epochs (14.4 B ADA at epoch 623). Only 0.37 % of circulation is reachable by reward design (registered staking key but not delegated); the remaining 39.4 % sits in addresses that cannot delegate without a protocol-level change. The "unreachable" core is not a faceless retail tail — 246 wallets hold 74 % of it, top-3 alone hold 19 %; the addresses split cleanly into recognisable archetypes (exchange hot wallets, institutional cold storage, pre-staking-era legacy holders, DeFi vaults). The "addressable" pool collapses to ~2,100 active accounts and 0.06 % of supply once zero-balance shells and a single DeFi vault are removed. The reward mechanism's recruitment ceiling is narrow; meaningful re-engagement requires changing the address architecture, not the incentive curve.
The staking rate is structurally declining despite persistent net delegator inflows. The rate has fallen from 71% (epoch ~260) to 59% (epoch 623) — a 12 pp loss over ~360 epochs. Circulating ADA grew from ~32B to ~37B while staked ADA grew from ~23B to only ~22B; the non-participant pool is growing faster than the staking pool. · 14.36B ADA (39.8% of circulating supply) does not participate in staking — and only a sliver of that is reachable by reward design. The non-participant pool has been stable at 36–39% for over 300 epochs. Only 0.37% of circulation (134.6M ADA, 24,176 accounts) is nominally addressable by an incentive-design change — and even that figure shrinks under scrutiny (§5.5). The remaining 39.4% sits in addresses that cannot delegate without a protocol-level change.
8 findings
CEN.O8
The active submitter population is shrinking and concentrating into a smaller, more active core
The submitter population — addresses paying fees in any given epoch — collapsed from a peak of 790,335 actors (epoch 304) to 31,176 (epoch 627), a −96% contraction against only a 92% drop in transactions. The same population now transacts ~3.8× per epoch (vs ~2.0× at peak), and the address-to-transaction ratio fell from 0.88 (epoch 210) to 0.26 (epoch 627). The chain is not losing activity; the population doing it is shrinking while each surviving member transacts more often.
The submitter population peaked at 790K addresses and has since contracted by 96% — the chain runs busily, with a much smaller crowd. The population grew in step with transaction count through early Shelley, peaking at 790,335 unique addresses and 1,566,974 transactions at epoch 304 (the CNFT minting frenzy). From epoch 310 onward the population collapsed faster than volume: 101K submitters at epoch 384, 58K at epoch 500, 31,176 at epoch 627. Transaction volume fell only 92% over the same window — a population one twenty-fifth of its peak still sustains three quarters of the per-epoch transaction rate seen during 2023–2024. · Breadth is collapsing while per-actor intensity is rising — the same shrinking core just transacts more often. The address-to-transaction ratio fell from 0.88 (epoch 210) to 0.26 (epoch 627), and tx-per-submitter rose from ~2.0 (epoch 304) to ~3.8 (epoch 627). Cumulative Shelley-era throughput totals 118.07M transactions and 37.85M ADA in fees. The growth-trajectory signal is unambiguous: new addresses are not entering the fee-paying population at a rate that would sustain breadth — the same shrinking core is just transacting more often.
2 findings
CEN.O9
Two submitter sub-populations coexist: a stakeable head-count majority and a small non-stakeable minority that pays a third of the fees
At epoch 627, the stakeable majority — base-key (
addr1q) addresses carrying a stake credential — is 73.3% of submitter head-count and pays 47.4% of fees. The non-stakeable minority — enterprise (addr1v, addr1w) and legacy Byron addresses that structurally cannot delegate — is only ~16% of head-count but generates 30.1% of fee revenue (averaged 622–627), and that share has not fallen below 14% since the Alonzo era. The reward pipeline taxes a sub-population it cannot reward.By address count, the submitter population remains overwhelmingly stakeable — but the script segment has grown structurally. At epoch 627: 73.3% base-key (
addr1q) addresses carrying a stake credential, 10.8% base-script (addr1z), 9.2% enterprise-key (addr1v), 4.9% legacy Byron, 1.6% enterprise-script (addr1w), 0.2% base-other. Compared to the earlier snapshot at epoch 384 (87% base-key, <1% script), the shift is clear — base-key dropped 14 pp while base-script grew from 0.4% to 10.8%. The count-based picture remains misleading: the small script population punches far above its weight in fee terms. · Roughly 30% of fee revenue is generated by addresses that structurally cannot delegate, and this share has been stable since Alonzo. Over the recent 6-epoch window (622–627): enterprise-script (addr1w) 17.0%, enterprise-key (addr1v) 10.8%, legacy Byron 2.3% — totalling 30.1%. The non-stakeable fee share has oscillated between 18% and 44% since epoch 300, averaging ~25%; the structural floor is set by DeFi contract activity, the ceiling by speculative episodes. At no point since Alonzo has it fallen below 14% — the reward mechanism taxes a constituency it excludes.2 findings
CEN.O10
A small DeFi-script sub-population — ~3,800 contracts at epoch 627 — generates a third of the fee base
The script-using sub-population — base-script (
addr1z) and enterprise-script (addr1w) addresses — is 3,851 actors at epoch 627 (12.4% of submitters) and generates 36.0% of epoch fees. Across the full post-Alonzo era it represents 12.5% of transaction count but 29.6% of cumulative fees. The per-address fee rate of an enterprise-script submitter (12.1 ADA/epoch) is 14× that of a base-key submitter (0.83 ADA/epoch). The chain's fee floor is supported by a population of roughly 3,800 smart contracts — a population dimension the current incentive design does not address.Script transactions are 12.5% of post-Alonzo count but 29.6% of cumulative fees — the DeFi economy pays a 2.4× per-transaction premium. The premium peaked above 3× during the Alonzo era (epochs 310–340), when fewer than 30% of transactions commanded over 60% of fees. It has moderated to ~1.5× in recent epochs but remains structurally above parity. For the sustainability argument, this means per-transaction fee intensity is coupled to script adoption — a variable the current incentive design does not address. · At epoch 627, ~3,800 script addresses (12% of submitters) generate 36% of fee revenue — the pipeline depends on the continued operation of these contracts. Specifically: 490 enterprise-script + 3,361 base-script = 3,851 actors (12.4% of the submitter population) generated 14,481 ADA in fees — 36.0% of the epoch total. The per-address rate of an enterprise-script submitter (12.1 ADA/epoch) is 14× that of a base-key submitter (0.83 ADA/epoch). The script population grew sixteen-fold since epoch 384 (0.7% → 12.4%) while their fee share held steady around one third — the per-address premium has moderated but the structural dependency has deepened.
2 findings
CEN.O11
The fee-paying population is bimodal: a heavy-paying core of a few hundred high-frequency actors and a long tail of ~147K small contributors
Over epochs 622–627, the top 10 addresses generate 20.0% of fees and the top 500 generate 58.4% — out of ~147K active submitters. The heavy-paying core is recognisable: a MinSwap DEX-script address leads, followed by addresses tied to the NUFI, TITAN, BERRY, and OYSTR pools and several enterprise-script DEX contracts and bot wallets. The concentration is heavy-tailed but below the delegation Gini of 0.976. 500 addresses out of 147K (0.34%) pay the majority of fees — the fee floor depends on a sub-population small enough to know by name.
The top 10 addresses pay 20% of all fees; the top 500 (out of ~147K) pay 58%. Over epochs 622–627, 500 addresses out of ~147K (0.34%) pay the majority of fees. Concentration is heavy-tailed but less extreme than delegation stake (Gini 0.976). Compared to the prior 618–623 window (top-10 = 24.3%, top-500 = 60.8%), the recent window shows a mild de-concentration of 4 pp at the top — driven by a single very-high-volume address whose activity tapered. The fee base sits on a few hundred high-frequency automated actors, not a diffuse retail tail. · The top 10 fee payers ran 110,739 transactions over 6 epochs (16.1% of volume) — fee-pot stability hinges on a population small enough to know by name. The top 50 ran 219,720 transactions (32.0%) over the same 6-epoch window. The top fee payers are dominated by recognisable archetypes: a MinSwap DEX-script address leads at 12,105 ADA over 6 epochs; pools tied to NUFI (NuFi exchange-style operator), TITAN, BERRY, and OYSTR appear among the top 10 alongside enterprise-script DEX contracts and bot wallets. The fee floor of the network depends on a population of ~10 actors whose churn risk is not modelled by any incentive parameter.
2 findings
CEN.O12
The fee-paying population and the delegator population barely overlap — funders and beneficiaries are largely different people
Joining the submitter set (~147K addresses, epochs 622–627) to the 1,352,113 active delegators at epoch 627 reveals the population gap: only 41.8% of fee revenue comes from currently-delegating addresses; 28.1% from base addresses whose stake credential is not in the delegation set; 30.1% from addresses with no stake credential. From the delegator side, only 3.1% of the 1.352M delegators submit any transaction in a 6-epoch window. Fewer than 4 ADA in every 10 ADA of fees flow back to the population that paid them through any reward channel.
Only 41.8% of fee revenue comes from currently-delegating addresses; the remaining 58.2% comes from addresses outside the delegation set at the snapshot epoch. Across epochs 622–627, the 1.352M delegators at epoch 627 contributed 41.8% of fee revenue (92,538 ADA out of 221,565). The stakeable-but-inactive segment (base addresses whose stake credentials are not in the delegation set) contributed 28.1% (62,340 ADA). The structurally non-stakeable segment (enterprise + legacy) contributed 30.1% (66,684 ADA). The mismatch is symmetric on both sides — the funding base does not match the reward base. · Only 3.1% of delegators submit any transaction in a 6-epoch window — 96.9% of delegators are passive holders. Of the 1,352,113 active delegators at epoch 627, only 42,082 appear as the first input of any transaction during epochs 622–627 (a 30-day window). The remaining 1,310,031 (96.9%) hold stake, accrue rewards, and never touch the chain. From the other side, the submitter base has 76,561 unique stake credentials over the same window, of which 42,082 (55.0%) are in the delegation set — the rest carry a stake credential that has never been delegated, has been deregistered, or sits idle.
3 findings
TRE.O1
The epoch pot rests on a single source — and that source has crossed its half-life
The protocol's reward formula admits three inputs to the epoch pot — monetary expansion, transaction fees, deposits. In practice only one matters. Monetary expansion supplies ~99.8% of the pot; fees contribute ~0.17% and even at full realistic network capacity would cover only 1.3% of the expansion term (a ~100× structural gap in fee revenue terms); the deposit channel is unmeasurable at epoch granularity. Stake pool operators assemble the pot reliably (η = 0.977 average — the cooperative-behaviour gate is satisfied but never binding). The budget therefore depends almost entirely on the reserve, which is shrinking by 0.3% every epoch.
Monetary expansion is the only material input to the pot — supplies ~99.8%, every epoch, since Shelley. Outside a single recent anomaly at epoch 620 (~5% fee share), fees have never crossed 3% — even during peak NFT/DeFi activity. The pot's trajectory is therefore tied almost entirely to reserve stock and ρ; the formula admits three sources but the mechanism behaves as if it had one · Fee revenue is structurally insufficient — closing the gap requires fee revenue to grow ~100× (two orders of magnitude). Fees contribute ~0.17% of the pot at epoch 623, and even the realistic capacity ceiling (~254K ADA/epoch at 3.1 TPS × 432K s × 0.19 ADA/tx) covers only ~1.3% of the reserve expansion term (~19.23M ADA). Closing the gap requires a throughput upgrade (Leios), a structural shift in transaction demand, and higher per-tx pricing (no single lever suffices); until that crossover, the second source named in the SL-D1 formula is a rounding error
4 findings
TRE.O2
The reserve has crossed its half-life — the budget is on an exponential decay schedule
The reserve has fallen from 13.29B to 6.45B ADA — −51.43% in ~5.7 years of Shelley operation. The decay is exponential: every epoch draws 0.3% of whatever remains, so the nominal pot has already halved (from ~39.9M to ~19.36M ADA/epoch) and continues to shrink mechanically even when participation does not. Significant reward pressure is projected at epochs 1000–1200 (~2028–2029) when expansion-driven rewards stop matching today's scale.
The reserve is half-depleted in 5.7 years and the nominal expansion has already halved. Stock has fallen from 13.29B → 6.45B ADA (a −51.43% decline) over ~5.7 years; the nominal monetary draw has dropped from ~39.9M → ~19.36M ADA/epoch. Because the formula draws a fixed 0.3% of remaining reserve, the decay is exponential — the absolute pot keeps shrinking even when participation does not. The single-source budget identified in TRE.O1 is now visibly thinning, on a schedule the formula cannot reverse · Significant reward pressure begins at epochs 1000–1200 (~2028–2029). At current parameters and participation, the reserve reaches ~2B ADA in this window — at which point per-epoch rewards drop materially. Full depletion is projected around epoch 3500 (~2040s). The window for governance to intervene before the pot becomes too small to incentivise meaningful staking is on the order of 3–4 years
2 findings
TRE.O3
Less than half of the pools pot reaches operators and delegators — the rest props up the reserve as a side effect of low participation
Of the 15.39M ADA/epoch allocated to the pools pot, only 6.78M ADA (~44%) actually reaches operators and delegators; the remaining ~8.61M returns to the reserve. Cumulatively over 413 epochs, 4.61B ADA has flowed back this way — ~71% of the current reserve stock exists because rewards were not fully distributed. The primary driver is upstream of the formula: ~16.8B ADA (~43.6% of circulating supply) does not participate in delegation at all. The reserve has lasted as long as it has because the system has been failing to pay out — adoption that pulls inactive stake into the game would accelerate depletion.
Less than half of the pools pot reaches its intended recipients. Of the 15.39M ADA allocated to the pool side at epoch 623, only 6.78M ADA (~44%) is distributed to operators and delegators; the remaining ~8.61M returns to the reserve. The mechanism therefore operates at less than half of its design throughput in steady state — the SL-D1 distribution rules are intact, but the pool-by-pool conditions for full payout are not met across most of the landscape · Cumulative undistributed rewards account for roughly three quarters of the current reserve stock. Over 413 epochs the return-to-reserve channel has accumulated 4.61B ADA — about 71% of the 6.45B ADA the reserve holds today. This buffer is a side-effect of incomplete distribution, not a design feature: the reserve has lasted as long as it has largely because the system has been failing to pay out. Any reform that improves distribution efficiency therefore accelerates depletion
3 findings
TRE.O4
The two parameters that govern this whole layer have never been adjusted
The treasury rate (τ = 20%) and the monetary expansion rate (ρ = 0.3%) have remained at their day-one values for the full ~5.7 years of mainnet operation. Neither has been the subject of a formal governance proposal. The current pot, treasury inflow, and reserve trajectory all reflect parameter choices made for a network with very different supply, participation, and pool-count conditions — and the absence of any review path is itself a structural feature.
Treasury rate (τ = 20%) and monetary expansion rate (ρ = 0.3%) have never been adjusted since Shelley. Both parameters were set on 2020/07/29 and have remained at their day-one values across ~5.7 years of mainnet operation. Decentralisation d was gradually reduced to 0 (epochs 208–257) and k was raised from 150 to 500 (Aug 2020) — but the reward-level parameters that drive every quantity in this section remain frozen, and neither has been the subject of a formal governance proposal
1 finding
POL.O1
Participation gap and unused pledge-incentive budget return 54% of the pool pot to reserve
Only 6.79M of 15.53M ADA/epoch reaches operators and delegators — a 44% distribution efficiency.
Two causes dominate the loss: the participation gap (unstaked ADA) returns 4.91M ADA/epoch — 31.6% of the pot, upstream — outside formula control; the unused pledge-incentive budget returns 3.43M ADA/epoch — 22.1% of the pot, 95.6% of the bonus allocation wasted.
All other causes are an order of magnitude smaller — pledge-not-met confiscation (2.1%), performance (0.5%), oversaturation (0.3%).
Two causes dominate the loss: the participation gap (unstaked ADA) returns 4.91M ADA/epoch — 31.6% of the pot, upstream — outside formula control; the unused pledge-incentive budget returns 3.43M ADA/epoch — 22.1% of the pot, 95.6% of the bonus allocation wasted.
All other causes are an order of magnitude smaller — pledge-not-met confiscation (2.1%), performance (0.5%), oversaturation (0.3%).
Less than half the pool pot reaches its targets. Only 6.79M of the 15.53M ADA per epoch budgeted for distribution actually reaches operators and delegators — a 44% distribution efficiency. The other 56% returns to the reserve unused · ADA that isn't staked at all is the single largest source of waste. Every epoch, 4.91M ADA is forfeited because roughly a third of the supply sits unstaked — that's 31.6% of the pot, returned to the reserve before the formula even gets a chance to distribute it
4 findings
POL.O2
Pledge is unused at scale and structurally unfair across pool sizes
78% of staked ADA sits in pools with pledge ratio < 1%; the stake-weighted median is 0.07%. The bonus that should reward commitment is silent for almost every operator.
The unfairness is algebraic, not just empirical. The activation function A(ν, π) = ν² · π[1 - π(1 - ν)] has three structural defects: a permanent quadratic size penalty ν² that scales every pledge ratio against pool size; a non-monotone regime in π for any pool below half-saturation, where pledging more than π^ = 1/[2(1-ν)] pays less; and a cubic collapse to ν³ at full self-pledge, where the strongest possible commitment is paid the worst-case scaling on size.
The combined consequence: yield on pledge capital tops out at 0.68%/yr at saturation (vs. 2.3%/yr passive delegation), and 3.4M ADA/epoch* (22% of pot) reserved for the bonus returns to reserve unclaimed.
The unfairness is algebraic, not just empirical. The activation function A(ν, π) = ν² · π[1 - π(1 - ν)] has three structural defects: a permanent quadratic size penalty ν² that scales every pledge ratio against pool size; a non-monotone regime in π for any pool below half-saturation, where pledging more than π^ = 1/[2(1-ν)] pays less; and a cubic collapse to ν³ at full self-pledge, where the strongest possible commitment is paid the worst-case scaling on size.
The combined consequence: yield on pledge capital tops out at 0.68%/yr at saturation (vs. 2.3%/yr passive delegation), and 3.4M ADA/epoch* (22% of pot) reserved for the bonus returns to reserve unclaimed.
Almost no operator pledges meaningfully. 78% of staked ADA sits in pools where the operator pledges less than 1% of the stake they manage; the stake-weighted median pledge ratio is 0.07% · Pledging earns less than passive delegation, even at maximum scale. A fully-saturated pool whose operator pledges the entire saturation amount earns just 0.68%/yr on that pledged capital — below the 2.3%/yr anyone can earn by passively delegating
6 findings
POL.O3
Three structural thresholds shape pool space: production (physics), viability (economics), saturation (formula)
Three thresholds emerge from the protocol's own mechanics and partition the pool population. Each has a different nature and a different mutability profile.
Production threshold (~3M ADA) — physics, emergent. The stake at which a pool produces ≥1 block per epoch with 95% probability (λ=3 in the Poisson process — blocks are produced reliably enough for yield to be a usable signal for delegators). Not a protocol parameter; rises with active stake (to ~5.35M at full supply). The 1-block-expectation point (~1M ADA) is a special case at the bottom edge of this regime — below it, pools produce less than one block in expectation per epoch.
Viability threshold — economic, and it moves; sits structurally above the production threshold. The protocol's
Saturation cap (77M ADA = z₀ = 1/k) — formula, fixed by parameter. The reward ceiling per pool, designed to limit any single pool's share of network reward.
The cleaner future state would collapse viability into production, leaving only the physics-grounded boundary. This is harder than it sounds — zeroing
The boundaries are dynamic — they shift with active stake, fixed costs, k, and the ADA/USD price — so any CIP must be evaluated against where they move, not against a snapshot.
Production threshold (~3M ADA) — physics, emergent. The stake at which a pool produces ≥1 block per epoch with 95% probability (λ=3 in the Poisson process — blocks are produced reliably enough for yield to be a usable signal for delegators). Not a protocol parameter; rises with active stake (to ~5.35M at full supply). The 1-block-expectation point (~1M ADA) is a special case at the bottom edge of this regime — below it, pools produce less than one block in expectation per epoch.
Viability threshold — economic, and it moves; sits structurally above the production threshold. The protocol's
minPoolCost floor (currently 170 ADA, halved from 340 at epoch 445 / 2023-10-27; most pools still set 340) gives a nominal break-even at ~1.1M ADA — but this is just the formula's internal floor. Real economic viability requires covering infrastructure (~1,320–3,240/yr for block-producer + 2 relays + monitoring) plus operator labour at market DevOps/SRE rates (~5,160/yr minimum at 10 hrs/mo × 43/hr) — totalling ~7,160/yr minimum, easily doubling for a more demanding setup. Because operator costs are fiat-denominated while revenue is in ADA, the real target tracks the ADA/USD price (~28,600 ADA/yr at 0.25; ~71,600 at0.10). At today's prices no single-pool tier comfortably clears it; competitive compensation begins only at the 2-pool MPO tier.Saturation cap (77M ADA = z₀ = 1/k) — formula, fixed by parameter. The reward ceiling per pool, designed to limit any single pool's share of network reward.
The cleaner future state would collapse viability into production, leaving only the physics-grounded boundary. This is harder than it sounds — zeroing
minPoolCost removes the protocol-imposed floor, but the real labour-cost floor remains unless a structural mechanism (e.g., Rocket-Pool-style shared operations) is introduced. See §1.2.4.4.1 Enforce the production threshold.The boundaries are dynamic — they shift with active stake, fixed costs, k, and the ADA/USD price — so any CIP must be evaluated against where they move, not against a snapshot.
The production threshold is physics-based — emergent from slot-leadership, not a parameter. At today's active stake (~21.18B ADA), regular block production starts at ~3M ADA, the stake level at which a pool has a 95% probability of producing at least one block per epoch (λ=3 in the Poisson process) — the point where yield is usable as a delegator signal. The 1-block-expectation point (~0.97M ADA) is a special case at the bottom of the regime: below it, pools have less than one expected block per epoch and rewards are noise, not signal. The threshold rises with active stake — at full supply (~38.5B ADA), the 3-block point climbs to ~5.35M ADA, pushing more pools below it · Operator-viability is volatile and tracks the ADA/USD price; at today's prices it coincides with the production threshold, but separates upward when ADA falls. A single-pool operator needs to extract roughly 390 ADA/epoch today (~7,160/yr cost floor — infrastructure ~1,320–3,240/yr + DevOps labour ~5,160/yr min — at0.25 ADA). At the production threshold (~3M ADA stake), the pool generates ~2,145 ADA/epoch on average, more than enough — viability and production coincide. At lower ADA prices the cost in ADA rises, and the reliable-income floor rises above production. The threshold is therefore not drawn as a fixed line in the rest of this document; it is treated as a separate volatile concept whose stability is a question for the V2 spec, not the diagnostic
5 findings
POL.O4
A 73% sub-block tail (useless to consensus) and a 27% productive segment (unreadable without entity-level investigation)
The pool population splits cleanly at the production threshold, and the two segments answer different questions.
Below the production threshold (~3M ADA): a sub-block tail invisible to consensus. 1,987 pools (73% of all pools with stake) sit below the 95%-block-probability bar and produce blocks too sporadically to be useful for the consensus protocol — they hold only 2.7% of active stake and exist as ghost capacity the protocol admits but cannot reliably activate. Below this threshold, a delegator cannot read a meaningful yield signal from any single pool — Poisson noise dominates the mean.
Above the production threshold: the productive segment cannot be read pool-by-pool. 731 pools (27%) hold 96.6% of staked ADA and carry the network's actual block production. But each pool appears on-chain as if it were independent, while in fact multi-pool entities run fleets — pool count is therefore a poor proxy for operator count, and pool-level metrics conceal entity-level concentration. The entity-level breakdown — counts, archetypes, who responds to the pledge signal — is the subject of POL.O5 — entity-level analysis.
Below the production threshold (~3M ADA): a sub-block tail invisible to consensus. 1,987 pools (73% of all pools with stake) sit below the 95%-block-probability bar and produce blocks too sporadically to be useful for the consensus protocol — they hold only 2.7% of active stake and exist as ghost capacity the protocol admits but cannot reliably activate. Below this threshold, a delegator cannot read a meaningful yield signal from any single pool — Poisson noise dominates the mean.
Above the production threshold: the productive segment cannot be read pool-by-pool. 731 pools (27%) hold 96.6% of staked ADA and carry the network's actual block production. But each pool appears on-chain as if it were independent, while in fact multi-pool entities run fleets — pool count is therefore a poor proxy for operator count, and pool-level metrics conceal entity-level concentration. The entity-level breakdown — counts, archetypes, who responds to the pledge signal — is the subject of POL.O5 — entity-level analysis.
1,987 pools (73%) sit below the production threshold (~3M ADA) and produce blocks too sporadically to carry consensus reliably. At the production threshold a pool has a 95% probability of producing ≥1 block per epoch (λ=3); below it Poisson noise dominates and yield is statistical noise. Collectively these pools hold only 2.7% of active stake — ghost capacity the protocol admits but cannot reliably activate; neither delegators nor the consensus layer can read a meaningful signal from any single pool in this segment · The productive segment (731 pools, 27%) holds 96.6% of staked ADA — the actual consensus-carrying population. This is the segment any reform of k, the pledge curve, or the saturation cap actually moves. Pool count is not stake share: the inversion of headline pool count vs. stake share is the defining structural feature of the landscape
3 findings
POL.O5
83 multi-pool operators control 76.7% of productive stake — and almost none of them pledge
83 attributed entities operate 449 productive pools holding 16.24B ADA — 76.7% of productive stake.
The pledge picture is stark: of the 48 entities with enough capital to ever fill a pool to saturation, 42 sit at zero-pledge (pledge ratio < 2%), holding 12.20B ADA combined.
Architecture explains part of it: 10 of those 42 (CEX + IVaaS — Coinbase, Binance, Figment, Kiln…) hold 7.39B ADA they legally cannot pledge — exchanges custody retail balances, institutional validators run client assets. But that is only half the story. The other 32 are sovereign saturation-scale MPOs holding 4.80B ADA (22.7% of productive stake) that could pledge meaningfully but choose not to — they forfeit ~556K ADA/epoch in pledge bonus and absorb the cost. The architectural barrier is real; the strategic abandonment is larger as a share of the entities that could play. Only 2 of the 48 MPOs actually pledge most of their stake (≥80% pledge ratio) — Cardano Foundation (which pledges out of institutional duty, not in response to the formula) and Adalite Platform. Among private operators making an economic decision, the pledge mechanism currently succeeds on exactly one entity (Adalite).
The pledge picture is stark: of the 48 entities with enough capital to ever fill a pool to saturation, 42 sit at zero-pledge (pledge ratio < 2%), holding 12.20B ADA combined.
Architecture explains part of it: 10 of those 42 (CEX + IVaaS — Coinbase, Binance, Figment, Kiln…) hold 7.39B ADA they legally cannot pledge — exchanges custody retail balances, institutional validators run client assets. But that is only half the story. The other 32 are sovereign saturation-scale MPOs holding 4.80B ADA (22.7% of productive stake) that could pledge meaningfully but choose not to — they forfeit ~556K ADA/epoch in pledge bonus and absorb the cost. The architectural barrier is real; the strategic abandonment is larger as a share of the entities that could play. Only 2 of the 48 MPOs actually pledge most of their stake (≥80% pledge ratio) — Cardano Foundation (which pledges out of institutional duty, not in response to the formula) and Adalite Platform. Among private operators making an economic decision, the pledge mechanism currently succeeds on exactly one entity (Adalite).
Three quarters of the network's productive stake sits in 83 named entities. They operate 449 productive pools (≥3M ADA at epoch 623, the production threshold) holding 16.24B ADA — 76.7% of productive stake. 71 are strict multi-pool fleets; 12 are single-pool operators attributed by ticker, metadata, or relay clustering. The remaining 23.3% (4.94B ADA across 284 pools) sits in unattributed single-pool operators — attribution is a lower bound · 48 MPO entities concentrate 14.55B ADA — 68.7% of productive stake — in operators each big enough to fill a saturation cap. These are the saturation-scale MPOs (aggregate stake ≥ z₀ ≈ 77\textM ADA). Concentration at the entity tier is sharper than the 76.7% headline once the 35 sub-saturation entities (1.69B ADA, multi-pool by form but single-pool-like in economics) are stripped out. The top 5 of the 48 alone hold 5.44B ADA — 25.7% of productive stake (Coinbase, CHUCK BUX, Figment, Binance, Kiln); the top 10 hold 39.1%. The split is purely structural — pledge is taken up next
7 findings
POL.O6
Only 284 productive single-pool operators remain — and almost none of them pledge (like MPOs)
The "741 healthy pools" headline was 3× inflated. Strip out the fleet pools that were actually being run by multi-pool entities, and only 284 productive single-pool operators remain (productive = pool stake ≥3M ADA at epoch 623, the production threshold).
Almost none of them pledge. 80.6% of single-pool productive stake sits at zero-pledge (< 2% pledge ratio). This is not irrational — at single-pool scale, the pledge bonus pays less than passive delegation, so locking ADA into the pledge is dominated. They are responding correctly to weak incentives, not failing to play.
Only 51 operators sit in the middle (pledge ratio between 2% and 30%) — the narrow group a parameter reform could plausibly move. Everyone else is either above the bar already (very rare) or below it (zero-pledge).
And the segment is shrinking. Its share of active stake fell from 28.0% → 25.0% since epoch 583 — capital is flowing toward MPO fleets, not toward the single-pool operators the mechanism was designed for.
Almost none of them pledge. 80.6% of single-pool productive stake sits at zero-pledge (< 2% pledge ratio). This is not irrational — at single-pool scale, the pledge bonus pays less than passive delegation, so locking ADA into the pledge is dominated. They are responding correctly to weak incentives, not failing to play.
Only 51 operators sit in the middle (pledge ratio between 2% and 30%) — the narrow group a parameter reform could plausibly move. Everyone else is either above the bar already (very rare) or below it (zero-pledge).
And the segment is shrinking. Its share of active stake fell from 28.0% → 25.0% since epoch 583 — capital is flowing toward MPO fleets, not toward the single-pool operators the mechanism was designed for.
The competitive field of single-pool operators is 3× smaller than the Incentive Mechanism Analysis headline. Lopez de Lara reported 741 'healthy' pools as evidence of a functioning incentive landscape; once MPO fleet members are stripped out, only 284 single-pool operators remain. 61% of the headline were fleet pools — operating under entity-level strategies (delegation source, fee setting, pledge), not the single-pool economics the headline was supposed to be about · At single-pool scale, pledging is rationally priced as not worth it. 80.6% of single-pool productive stake (227 of 284 pools) sits in pools whose self-pledge is less than 2% of the stake they manage — call this zero-pledge: the operator has effectively declined the pledge bonus. The economics explain why: at single-pool scale, locking own ADA into the pledge yields at best 0.68%/year while passive delegation pays ~2.3%/year, so the pledge is dominated by the alternative use of capital at every realistic ratio. These operators are not failing to pledge — they are correctly responding to a formula that prices their effort below the delegation alternative.
4 findings
POL.O7
The pledge mechanism reaches only 36% of stake — and the 64% outside it splits into three populations no single parameter can pull back in
The pledge bonus was designed to discipline operator behaviour across the network. In practice it reaches only 36% of active stake (7.89B ADA) — single-pool operators plus the few MPOs that pledge meaningfully.
The other 64% is unreachable for three different reasons, each requiring a different fix:
(i) Architectural — 10 entities, 7.39B ADA. CEX + IVaaS legally cannot pledge — exchanges custody retail balances, institutional validators run client assets they don't own.
(ii) Strategic — 32 sovereign saturation-scale MPOs, 4.80B ADA. Community fleets, independent MPOs, multi-brand fleets, ecosystem stewards. They could pledge — they choose not to because the bonus pays less than passive delegation at their scale.
(iii) Sub-scale — 35 sub-saturation MPOs, 1.69B ADA. Aggregate stake below one saturation cap; the pledge bonus is mechanically too small at their size to register.
77 of 83 attributed entities sit in one of these three buckets. Conflating them into a single "raise a₀" debate is why parameter reform alone keeps producing the same equilibrium.
The other 64% is unreachable for three different reasons, each requiring a different fix:
(i) Architectural — 10 entities, 7.39B ADA. CEX + IVaaS legally cannot pledge — exchanges custody retail balances, institutional validators run client assets they don't own.
(ii) Strategic — 32 sovereign saturation-scale MPOs, 4.80B ADA. Community fleets, independent MPOs, multi-brand fleets, ecosystem stewards. They could pledge — they choose not to because the bonus pays less than passive delegation at their scale.
(iii) Sub-scale — 35 sub-saturation MPOs, 1.69B ADA. Aggregate stake below one saturation cap; the pledge bonus is mechanically too small at their size to register.
77 of 83 attributed entities sit in one of these three buckets. Conflating them into a single "raise a₀" debate is why parameter reform alone keeps producing the same equilibrium.
The pledge mechanism's actual reach is 36% of active stake — 7.89B ADA. Strip out the entities that don't respond to the pledge signal, and what remains (single-pool operators + the few MPOs that do pledge meaningfully) carries 7.89B ADA out of ~21.7B active. The other 13.89B ADA — 65.6% of productive stake — is held by entities the bonus does not reach. The mechanism was designed to discipline operator behaviour across the whole network; in practice it operates on roughly a third of it. · MPO non-response splits into three distinct populations — confusing them is what keeps reform from working. Architectural: 10 entities (CEX + IVaaS) holding 7.39B ADA that cannot pledge by law/business model — exchanges custody retail balances, institutional validators run client assets they don't own. Strategic: 32 sovereign saturation-scale MPOs holding 4.80B ADA that could pledge but choose not to — at their scale the bonus pays less than passive delegation. Sub-scale: 35 sub-saturation MPOs holding 1.69B ADA whose entire fleet cannot fill one saturated pool — pledging is mechanically too small to matter. These are three different problems wearing the same label
3 findings
OPE.O1
The flat fee (fixed cost) dominates operator revenue — but governance sets it, and operators resisted the last cut
The flat fee delivers 60% of retail operator revenue — yet operators don't compete on it. 89.5% of pools pick one of two floor values (the ones governance allows), so the parameter is effectively a governance-set price, not a competitive lever. When governance halved the floor from 340 ₳ to 170 ₳ in 2023, only ~36% of operators moved to the new floor — 64% still declare 340 ₳ today, 178 epochs (~1.5 years) after the cut. Operators are slow to follow even governance, and they actively resisted lowering the price the cut was meant to deliver to delegators.
The passive channel dominates the active one — the flat fee delivers 60% of operator revenue, the commission only 40%. Across the retail market, the fixed ₳/epoch flat fee accounts for 60% of operator revenue; the proportional commission accounts for the remaining 40%. The channel that dominates revenue is the one operators almost never touch. · Governance halved the floor 178 epochs ago — 64% of pools have not moved. The
minPoolCost floor was halved from 340 ₳ to 170 ₳ through a successful governance action. 178 epochs later (~1.5 years), 64% of pools still declare 340 ₳ — including most of the largest entities. The price most operators charge is not a pricing decision; it is a governance setting they never revised.5 findings
OPE.O2
The commission (margin) is doing two unrelated jobs: pricing a service on one side, privatising a pool without pledging on the other
The commission was designed as the operator's pricing tool: set a rate, charge it on each reward. On mainnet that role has split in two. 87% of pools use it as intended — commission ≤ 10%, pricing the service. 12% of pools set it ≥ 99%, taking essentially all rewards regardless of who delegates: a private pool funded by delegation, functionally equivalent to a self-pledged pool but without locking any capital. The 89-percentage-point range between the two uses is essentially empty (only 12 pools). The protocol exposes a continuous parameter; operators reduce it to two unrelated economic stances — price a service, or quietly privatise the pool.
The commission distribution is bimodal with an 89pp empty middle. 87% of pools set a commission at or below 10%; 12% set ≥ 99% (privatisation). The 89-percentage-point range between 10% and 99% contains only 12 pools. No economic attractor exists between competitive pricing and total extraction — operators either compete or fully privatise their pool, and almost no one in between · The market self-organises into four discrete tiers, not a continuous price distribution. No-commission (170 pools, 17.9% — almost certainly self-pledged), competitive (658 pools, 69.1% — at or below 10%), no man's land (12 pools, 1.3% — between 10% and 99%), privatisation (112 pools, 11.8% — at or above 99%). The four bands are an emergent equilibrium, not a design choice — the formula offers a continuous parameter and operators reduce it to four economic stances.
2 findings
OPE.O3
21% of productive stake is custodial — three mechanisms, three economics
21.1% of productive stake sits in pools where the operator effectively keeps the rewards rather than delivering them to a retail delegation market. The delegation flow exists on-chain, but it isn't doing the work the formula assumes — the operator is. Three on-chain-detectable mechanisms achieve this, with very different per-entity economics:
(i) By pledge — self-funded pools. 10 entities self-stake their own pools (operator owns ≥95% of the delegation). They capture 100% of rewards because they are the delegators. Median: 1.76M ₳/yr per entity.
(ii) By extraction — near-100% commission. 57 entities set the commission ≥ 99%, taking essentially all rewards regardless of who delegates. The pool is funded by delegation, but the operator collects everything (see OPE.O2). Median: 282K ₳/yr.
(iii) By delegation — whale-only pools. 15 entities operate pools where the typical (median) delegation exceeds 100K ADA — meaning the "delegators" are a small circle of whales, not retail. The pool serves an inner circle, not the open market. Median: 29K ₳/yr.
The three mechanisms produce three very different revenue scales (60× spread), but share the same underlying property: the open delegation market is not allocating this stake — the operator is.
(i) By pledge — self-funded pools. 10 entities self-stake their own pools (operator owns ≥95% of the delegation). They capture 100% of rewards because they are the delegators. Median: 1.76M ₳/yr per entity.
(ii) By extraction — near-100% commission. 57 entities set the commission ≥ 99%, taking essentially all rewards regardless of who delegates. The pool is funded by delegation, but the operator collects everything (see OPE.O2). Median: 282K ₳/yr.
(iii) By delegation — whale-only pools. 15 entities operate pools where the typical (median) delegation exceeds 100K ADA — meaning the "delegators" are a small circle of whales, not retail. The pool serves an inner circle, not the open market. Median: 29K ₳/yr.
The three mechanisms produce three very different revenue scales (60× spread), but share the same underlying property: the open delegation market is not allocating this stake — the operator is.
A fifth of productive stake is custodial — and it splits into three distinct mechanisms, not one. 79 entities operating 143 pools hold 4.55B ADA — 21.1% of productive stake in custodial pools. The split: (i) by pledge (10 entities, 36 pools, 1.59B — operator self-funds the pool); (ii) by extraction (57 entities, 79 pools, 2.04B — high commission on inert delegators); (iii) by delegation (15 entities, 28 pools, 0.92B — typical delegation ≥100K ₳). Each mechanism is detectable from on-chain observables and produces a different operator economics · The median delegation is what separates retail from custodial — not the mean. Custodial-by-delegation flags pools where the per-pool median delegation (db-sync
epoch_stake) is ≥ 100K ₳ — i.e., where the typical delegator is a whale, not the average dragged up by one whale. For comparison, a delegation of 50K ₳ is already in the top 1.5% of all delegations on the network. The median measures the delegator's experience; the mean measures capital concentration. They are not the same signal.3 findings
OPE.O4
The retail market is 79% of stake and the typical delegator holds 87 ₳
Once custodial pools are filtered out, the retail market is 809 pools, 516 entities, 17.02B ADA and 1,272,836 delegators — with a median delegation of 87 ₳ that is remarkably uniform across operator types, from independent single-pool to Coinbase and Binance.
Once custodial pools are filtered out, the retail market is bigger than mean-based estimates suggested — and it includes institutions. 809 retail pools, 516 entities, 17.02B ADA, 1,272,836 delegators. The retail-by-median-delegation classification keeps Coinbase, Binance, Kiln and other institutional operators inside the retail market — because their typical delegator is a small holder, even if the institutional brand is large. The retail market is the population the mechanism was designed for; it is the population every reform has to address · The typical retail delegator holds 87 ₳ — and the median is remarkably uniform across operator types. The median retail delegation across the entire 1.27M-delegator population is 87 ₳. Per-operator-type medians range from 45 to 962 ₳ — a tight 20× span across pool types from independent single-pool to Coinbase. Retail delegators are small, homogeneous, and yield-insensitive at this scale — any reform that prices below 87 ₳/year of incremental yield will not change their behaviour
2 findings
OPE.O5
Delegators pay 18× more for the same return
A sub-reliable delegator pays 48.3% effective price for 2.04% net return; a near-saturation delegator pays 2.7% for 2.34% — 18× the price for 0.30 percentage points of extra yield. Net return converges to 1.95–2.34% across the entire retail market — a signal too narrow to discipline pricing.
A delegator pays 18× more for 0.30 percentage points of extra yield. A delegator in a sub-reliable pool pays a 48.3% effective price (flat fee + commission as % of pool reward) for a 2.04% net return. A delegator in a near-saturation pool pays 2.7% for 2.34% — 18× lower price for 0.30pp more return. The effective price is a mechanical artefact of pool size (the flat fee's 1/σ regression), not a market signal — operators are not pricing competitively, the formula is pricing them · Net return converges to a narrow 1.95–2.34% band across the entire retail market — the signal is too weak to drive delegation. Regardless of pool size, operator type, or pricing plan, a retail delegator's net yield ends up between 1.95% and 2.34% — a 0.39 percentage point spread across the whole market. At this resolution, the yield signal cannot discipline operator pricing — delegators are not chasing 0.4pp of return; they are picking on visibility, brand, or convenience
2 findings
OPE.O6
Stake pool operator profitability ranges from 24K to 1M ₳/yr — operators who charge the most earn the least
Operator revenue scales with fleet size, not price — the sub-reliable single-pool operator absorbs 48.3% of pool rewards for 24,820 ₳/yr, while an 11+ pool MPO absorbs 7.7% for 1,035,496 ₳/yr (42× more revenue at 6× less price). No single-pool operator in the retail market earns a competitive wage.
The operators who charge the most earn the least — and vice versa. A sub-reliable single-pool operator absorbs 48.3% of pool rewards but earns only 24,820 ₳/yr. An 11+ pool MPO absorbs only 7.7% of pool rewards but earns 1,035,496 ₳/yr — 42× more revenue at 6× less effective price. The flat fee penalises small-pool delegators without compensating the operators who run those pools — both sides of the small-pool transaction lose · MPO revenue scales horizontally (more pools), not vertically (higher price). The 11+ pool bracket captures 26.5% of retail rewards through 7 entities. Their per-pool fee is the same 170/340 ₳ floor everyone else uses — they win by running more pools, not by pricing differently. Fleet size, not pricing, drives MPO operator economics — meaning a reform that targets pricing leaves fleet revenue untouched
4 findings
OPE.O7
Delegation follows visibility, not return
Delegators do not chase yield — 65.9% sit in hollow MPO pools at 2.18% net return while hollow single-pool near-saturation peers offer 2.34%. The pledge premium is negative once the flat fee drag (1.06pp for balanced vs 0.47pp for hollow) is priced in.
Two thirds of retail delegators sit in pools that pay less than the alternative — yield is not what they are choosing on. 65.9% of retail delegators sit in hollow MPO pools at 2.18% net return; hollow single-pool near-saturation pools offer 2.34% — 0.16pp more — and yet hold only 2.7% of delegators. Delegators are not chasing yield — they are picking on visibility, brand, exchange convenience, or default selection. The return signal does not drive delegation · The pledge premium is negative in the retail data — balanced operators deliver less net return than hollow ones. Balanced (genuine pledge commitment) operators deliver a median net return of 1.98%; hollow operators deliver 2.08%. The reason is mechanical: balanced single-pool operators incur a 1.06pp flat-fee drag vs 0.47pp for hollow ones, and that drag overwhelms whatever pledge premium the reward curve is supposed to add. The incentive mechanism's core assumption — that pledge commitment translates to better delegator outcomes — does not hold in the data
2 findings
OPE.O8
Reserve depletion is a structural clock: every epoch, the pot shrinks, the confiscatory zone widens, and yields erode
Reserve depletion is a structural clock built into the formula. Yield has fallen 5.3% → 2.0% in 413 epochs (R² = 0.99 with reserve), and the trajectory is irreversible without protocol-level intervention.
Concrete projections (from epoch 623, ~April 2026):
~12 months out (~Q2 2027) — yield at ~1.7%.
~20 months out (~Q4 2027) — yield crosses 1.5%.
~42 months out (~Q3 2029) — yield crosses 1.0%.
Each epoch the pot shrinks, the fixed-in-₳ flat fee consumes a growing share of pool rewards, and the retail yield spread compresses toward block-production noise. The failures documented in §4 don't stay still — they degrade every epoch by the same mechanical clock.
Concrete projections (from epoch 623, ~April 2026):
~12 months out (~Q2 2027) — yield at ~1.7%.
~20 months out (~Q4 2027) — yield crosses 1.5%.
~42 months out (~Q3 2029) — yield crosses 1.0%.
Each epoch the pot shrinks, the fixed-in-₳ flat fee consumes a growing share of pool rewards, and the retail yield spread compresses toward block-production noise. The failures documented in §4 don't stay still — they degrade every epoch by the same mechanical clock.
The delegator yield has fallen from 5.3% to 2.0% in 5.5 years and the decline is built into the formula. Yield has tracked reserve depletion with R² = 0.99 across 413 epochs. Projection from epoch 623 (~April 2026): ~1.7% within ~12 months, sub-1.5% within ~20 months (~Q4 2027), sub-1.0% within ~42 months (~Q3 2029). The decline is irreversible without protocol-level intervention — it is built into the monetary expansion formula. The entire yield surface descends as a unit; no pool-level strategy can offset the macro trajectory · The confiscatory zone expands upward every epoch — the failures in §4 are not static, they get worse mechanically. As the epoch pot shrinks, the flat fee (fixed at 170/340 ₳) consumes a growing share of pool rewards — the confiscatory zone from §4.1 — The flat fee (fixed cost) expands upward. The 0.39pp retail yield spread compresses proportionally: at 1.0% base yield (~Q3 2029), the same relative dispersion produces ~0.20pp — indistinguishable from block-production noise. Pools productive today will cross the sub-reliable threshold purely from macro depletion. The failures documented in §4 are not static — they degrade every epoch
3 findings
OPE.O9
Cardano's yield is no longer competitive — and the case for staking now rests on an ADA appreciation that hasn't materialised
At 2.0%, Cardano's delegation yield sits below the USD risk-free rate (4.3%) and at the bottom of the PoS chains' yield ladder. No other major chain combines this low a yield with liquid, non-custodial, slashing-free design.
The mechanism's design premise was that delegators stake because (i) the yield itself is meaningful and (ii) ADA appreciates in real terms (the formula's monetary design assumes deflation-like behaviour). Both assumptions are now under stress. The yield premise has empirically degraded (OPE.O8); and ADA has not shown the appreciation/deflation behaviour the formula was designed around — the case for delegation now rests almost entirely on a price thesis the protocol cannot guarantee.
If ADA fails to deliver real appreciation, the psychological effect compounds: delegators face low yield AND uncertain price, leaving only conviction-driven holders. The mechanism assumes yield-sensitive delegators; the regime now selects against them.
The mechanism's design premise was that delegators stake because (i) the yield itself is meaningful and (ii) ADA appreciates in real terms (the formula's monetary design assumes deflation-like behaviour). Both assumptions are now under stress. The yield premise has empirically degraded (OPE.O8); and ADA has not shown the appreciation/deflation behaviour the formula was designed around — the case for delegation now rests almost entirely on a price thesis the protocol cannot guarantee.
If ADA fails to deliver real appreciation, the psychological effect compounds: delegators face low yield AND uncertain price, leaving only conviction-driven holders. The mechanism assumes yield-sensitive delegators; the regime now selects against them.
At 2.0%, Cardano sits below the USD risk-free rate and at the bottom of the PoS landscape. Cardano's current 2.0% delegation yield is below the USD risk-free rate of 4.3% and at the bottom of the PoS chains' yield ladder. No other major chain combines this low a yield with liquid, non-custodial, slashing-free design. The low return is the cost of that design — but the design now asks delegators to accept a yield below the risk-free rate, which only conviction-driven holders will do · The mechanism's premise depends on ADA appreciation that hasn't materialised — and if it doesn't, only conviction-driven holders remain. The reward formula was designed around a monetary regime where ADA itself appreciates (the reserve-depletion design implies deflationary-like behaviour as the supply approaches its cap). In practice, ADA price has not delivered that appreciation, leaving delegators with low yield + uncertain price. The mechanism's assumption — that yield-sensitive delegators allocate based on competitive returns — collapses to a self-selected pool of long-conviction holders, who do not respond to the formula's pricing levers. If the deflation premise fails, the psychological pressure compounds: there is no yield case AND no appreciation case, only a conviction case — which the formula cannot manufacture
2 findings
CEN.O1.F1
Three quarters of registered pools are economically irrelevant. 2,144 of 2,877 (75%) sit below the production threshold (~3M ADA) and together hold only 2.7% of stake
Structural threshold
The structural floorCEN.O1.F2
Three quarters of productive stake sits in 83 named entities. They control 76.7% through 449 productive pools (71 strict multi-pool + 12 attributed single-pool) — and the count is a lower bound (operators using fully separate per-pool infrastructure stay invisible)
Concentration — supply side
SPO supply side — fewer and fewer entities participate in consensusCEN.O1.F3
The pool count flat-lined since epoch 300; the equilibrium is replacement, not growth. The productive set tracks a 700–1,000 historical band (733 at epoch 623) with 1.7% turnover per epoch — 3,497 entries against 3,070 exits balance to near-zero net flow
Market maturity
The market has crystallised — replacement, not growthCEN.O1.F4
Concentration is heavy-tailed: 12 entities run 41% of productive stake. Of the 83 attributed, 12 with 11+ productive pools control 41.0% (8.69B / 21.18B); the top 2 alone (Coinbase 41p, YUTA 25p) hold 13.4%
Scale dominance
The productive operator landscape — 733 pools, 367 entitiesCEN.O1.F5
Custodial dominance sets a structural pledge floor. CEX + IVaaS (10 entities, 181 pools, 7.40B ADA, 34.3% of productive stake) operate at zero pledge by architectural constraint — custodied retail balances cannot legally be pledged
Custodial constraint
The productive operator landscape — 733 pools, 367 entitiesCEN.O1.F6
Independent operators are losing the field — 48% pool-count loss in 323 epochs. Single-pool operators contracted from 555 pools / 39.1% of productive stake (epoch 300 peak) to 291 / 24.4% (epoch 623); the contraction has accelerated in the most recent window
Structural decline
The market has crystallised — replacement, not growthCEN.O1.F7
Multi-pool entities absorbed the contraction and then some — fleet count nearly quadrupled. From 23 entities / 135 pools / 65% of stake (epoch 210) to 85 / 660 / 75.6% (epoch 623); the mid-tier (6–20 pools) tripled in entity count and nearly doubled in stake share
Entity expansion
The market has crystallised — replacement, not growthCEN.O1.F8
The mechanism's designed progression path is invisible in the data. Entry → growth → established is supposed to feed the independent segment; instead the independent population is contracting and the replacement pools that maintain the productive total are entity-operated
Pipeline failure
The market has crystallised — replacement, not growthCEN.O1.F9
On-chain attribution alone misses the bulk of fleet structure — 4 entities vs 85, a ~20× jump. Most multi-pool operators use separate keys per pool, so on-chain ownership clustering catches only the small minority that doesn't separate keys; any analysis stopping at the on-chain layer materially understates MPO concentration
Methodological — attribution layer matters
Behind the pools — entity attribution layers 4 on-chain entities into 85CEN.O2.F1
A single Titan delegator moving in or out can shake a whole pool — whale-funded pools swing ~±20% between epochs vs ±8% for retail. In the 28 custodial-by-delegation pools (typical delegator holds ≥ 100K ₳), stake moves by roughly ±20% between epochs, with 21% of them swinging by more than 50% — these are pools where a single address is large enough that its movement dominates the variance. Retail (809 pools, broad small-delegator base) is mostly stable (±8%) — no single delegator can move the pool. Custodial-by-extraction (79 pools, ≥99% margin) is the most inert (±7%) — stagnation, not active management
Segment-driven variance
A pool's stake stability is segment-drivenCEN.O3.F1
Half the delegator base stakes less than a single transaction fee at peak congestion. Median: 32 ADA. Mean: 16,055 ADA. The 500× gap measures the skewness of a power-law distribution where each tier above 10K ADA holds roughly 20% of total stake despite containing exponentially fewer delegators
Structural inequality
Half the delegator base stakes less than a transaction feeCEN.O3.F2
The delegator population's stake is concentrated in its top 0.07%. 1,000 delegators (0.07% of the 1.36M population) hold 57% of staked ADA; the top 10,000 (0.74%) hold 79.2%. Gini = 0.976 — more concentrated than US wealth (~0.85) and comparable to the most unequal asset distributions observed in financial markets
Concentration — demand side
Half the delegator base stakes less than a transaction feeCEN.O3.F3
Concentration crystallised by epoch 300 and has not moved since. A 9× growth in delegator count has not budged the top-1% share (locked at 78–82%) — new entrants are overwhelmingly micro-delegators (<1K ADA, 96% of new joins) who inflate the denominator without touching the numerator. The economic weight of staking was set in its first ~90 epochs
Structural lock-in
Concentration crystallised by epoch 300 — 9× growth in delegators, no change in the top-1%CEN.O4.F1
Pool-switching collapsed 75% from early Shelley. Redelegations fell from 2,000–3,500 per epoch (early Shelley experimentation) to 600–800 today — three regimes: experimentation (epochs 210–260) → middle period with hard-fork spikes (260–500) → mature settled market (500+)
Market maturity
The certificate stream tells a three-act storyCEN.O4.F2
The base splits cleanly into stickers and switchers, with a thin middle. 42% loyal (201+ epochs, > 2.7 years), 21% volatile (≤ 5 epochs, < 25 days), 37% moderate. The loyal majority anchors pool economics; the volatile tail generates the bulk of the churn signal
Structural bimodality
Most delegators stay put — 42% have held the same pool 2.7+ yearsCEN.O4.F3
Switching is a retail-market phenomenon — custodial and private pools contribute negligible churn. A retail-only filter (margin < 99.9%, excluding by-pledge / by-extraction custodial) produces near-identical aggregates: 40.0% switch rate, 42.4% loyal tenure, ~799 redelegations per epoch
Churn is retail-only
Switching is a retail-only phenomenonCEN.O5.F1
Whales switch 4–5× more often than micro-delegators. Lifetime switches: <1K = 0.67, 1K–10K = 0.95, 10K–100K = 1.64, 100K–1M = 2.65, 1M+ = 3.06. Loyal share (201+ epochs): <1K = 82%, 1M+ = 39%. Switching intensity scales monotonically with stake size — small delegators delegate once and forget; large delegators actively manage their position
Size-driven behaviour
The bigger the delegation, the more it movesCEN.O5.F2
Most of the network's staked capital sits in delegations that move. Whales (1M+) hold 14.1B of the 21.8B staked total (65%), yet only 38% of that stake sits in loyal (201+ epoch) delegations — the rest distributes across moderate and volatile tenures. Pool operators dependent on a few large delegations face structurally higher stake instability than those with a broad base of small loyal delegators
Capital instability
Loyalty and low fees coexistCEN.O6.F1
Delegators cannot see what they're paying for — the yield signal is too flat to act on. Half of all switches (50.5%) produce zero yield change (±5 bps); the median ROS differential is +0.02 bps with an interquartile range of −0.47 to +0.55 bps. The signal is an order of magnitude below any threshold a delegator could observe, let alone optimise against
Price signal invisible
Half of all switches produce zero yield changeCEN.O6.F2
Operator take direction is balanced — no fee-chasing pattern is detectable. 30.8% of switches go to a cheaper pool, 31.5% to a more expensive one, 37.7% land at the same take. The take × ROS matrix's diagonal dominates (lower take → better ROS at 18.4%, similar → similar at 25.6%, higher → worse at 16.5%) — confirming take and ROS are two views of one signal, and that signal is too flat to drive behaviour
No fee-chasing
Operator take direction is balanced — no fee-chasingCEN.O6.F3
Pool size — not price — is the only asymmetric signal in switching behaviour. Moves to smaller pools tend to accept higher take (21.5%), moves to larger pools tend to stay take-neutral (21.0%). The asymmetry suggests moves toward small pools follow non-economic factors (community affinity, retirement at origin, decentralisation preference); moves toward larger pools follow a path of least resistance — visibility, not optimisation
Visibility over optimality
Pool size — not price — is the only asymmetric signalCEN.O6.F4
Loyalty and low fees coexist — the cheapest pools are the stickiest. 92.1% of loyal delegations (201+ epochs) sit in the 0–5% margin range. Loyalty is a consequence of initial pool selection into the competitive neighbourhood, not a barrier to leaving it; fees segment the market at entry, not during tenure
Entry filter, not trigger
Loyalty and low fees coexistCEN.O6.F5
DeFi operates almost entirely outside the staking system. 99.97% of delegations and 99.83% of stake are key-based; script-based delegation (smart contracts, multisig, governance) is 399 addresses and 38M ADA. The DeFi ecosystem has not integrated with delegation in any meaningful way — and the credential type cannot separate custodial from retail capital, since both present as key-based
No smart-contract staking
DeFi operates almost entirely outside the staking systemCEN.O7.F1
The staking rate is structurally declining despite persistent net delegator inflows. The rate has fallen from 71% (epoch ~260) to 59% (epoch 623) — a 12 pp loss over ~360 epochs. Circulating ADA grew from ~32B to ~37B while staked ADA grew from ~23B to only ~22B; the non-participant pool is growing faster than the staking pool.
Supply-side erosion
CEN.O7.F2
14.36B ADA (39.8% of circulating supply) does not participate in staking — and only a sliver of that is reachable by reward design. The non-participant pool has been stable at 36–39% for over 300 epochs. Only 0.37% of circulation (134.6M ADA, 24,176 accounts) is nominally addressable by an incentive-design change — and even that figure shrinks under scrutiny (§5.5). The remaining 39.4% sits in addresses that cannot delegate without a protocol-level change.
Structural non-participation
2/5 of the supply has sat unstaked for over 300 epochsCEN.O7.F3
The non-participant floor is structural, not behavioural — incentive changes alone cannot reach 99% of it. Reward-mechanism changes (curve adjustments, fee-structure reforms) can at most shift the 0.37% addressable pool. Moving the other 39.4% requires protocol-level changes — enabling exchange-style addresses to stake, mandating staking-capable DeFi script standards, or introducing delegation-by-default for newly minted wallets.
Structural protocol limit
Most non-participants have no staking keyCEN.O7.F4
The "no staking key" residual is dominated by legacy and custody, not by active DeFi. Among the 2.45B identified by address shape, exchange-style addresses (1.04B) and pre-staking-era legacy addresses (1.32B) together account for 96%. DeFi contract addresses without staking total just 91M — one tenth as much, growing only slowly. The remaining ~11.8B sits in standard wallets where the holder never bothered to register a staking key. The unreachable mass is overwhelmingly inertia, not active opt-out.
Composition — legacy not DeFi
Most non-participants have no staking keyCEN.O7.F5
The no-staking-key pool is bimodal: 37% is pre-staking-era dormant, 44% is from the last 73 epochs — the middle is empty. The dormant fraction (928M) erodes at about 0.8M ADA per epoch as wallets occasionally awaken. The recent fraction (1,110M from epochs 550–623) reflects active exchange and DeFi cycling. The middle eras are essentially spent — the population splits cleanly into probably lost and operationally active, with very little in between.
Bimodal — dormant vs operationally active
The locked share splits cleanly between probably-lost and operationally-activeCEN.O7.F6
The structurally-excluded 2.5B is held by a few hundred wallets, not by a diffuse retail base. Top-3 wallets control 19.1%, top-10 control 41.6%, top-200 control 68.9% of the 2.5B residual. The top of the distribution splits into recognisable archetypes — exchange hot wallets, institutional cold storage, pre-staking-era legacy holders — addresses that can be named, not anonymous retail. Any policy aimed at this pool acts on a small, identifiable counterparty list.
Concentration of structurally-excluded ADA
A few hundred custodians hold three-quarters of the structurally-excluded ADACEN.O7.F7
DeFi-locked-without-staking is a one-contract problem, not an ecosystem problem. 89% of the 91M residual lives in one 80M-ADA contract; the remaining 99 contracts together hold ~10M (11%). Mandating staking-capable contract addresses in DeFi standards would primarily move that one contract — the rest of DeFi has either already integrated staking or holds amounts too small to materially shift the residual.
DeFi exclusion is a one-contract problem
The DeFi-locked share is one contractCEN.O7.F8
The "addressable" pool is mostly inert — the real ceiling for reward-driven recruitment is 0.06% of circulation, not 0.37%. Of the 24,176 nominally-addressable accounts, 91% hold zero ADA, 89% have been dormant since the first 41 epochs of Shelley, and 80% of the residual ADA sits in one DeFi vault. The genuine ceiling for reward-driven re-engagement is ~22.5M ADA (0.06% of circulation), spread across ~2,100 active accounts. The reward mechanism's recruitment ceiling is narrower than the headline 0.37% suggests by an order of magnitude.
Real ceiling on reward-driven recruitment
The "addressable" pool collapses to about 2,100 active accountsCEN.O8.F1
The submitter population peaked at 790K addresses and has since contracted by 96% — the chain runs busily, with a much smaller crowd. The population grew in step with transaction count through early Shelley, peaking at 790,335 unique addresses and 1,566,974 transactions at epoch 304 (the CNFT minting frenzy). From epoch 310 onward the population collapsed faster than volume: 101K submitters at epoch 384, 58K at epoch 500, 31,176 at epoch 627. Transaction volume fell only 92% over the same window — a population one twenty-fifth of its peak still sustains three quarters of the per-epoch transaction rate seen during 2023–2024.
Population contraction
A shrinking crowd paying for a busy chainCEN.O8.F2
Breadth is collapsing while per-actor intensity is rising — the same shrinking core just transacts more often. The address-to-transaction ratio fell from 0.88 (epoch 210) to 0.26 (epoch 627), and tx-per-submitter rose from ~2.0 (epoch 304) to ~3.8 (epoch 627). Cumulative Shelley-era throughput totals 118.07M transactions and 37.85M ADA in fees. The growth-trajectory signal is unambiguous: new addresses are not entering the fee-paying population at a rate that would sustain breadth — the same shrinking core is just transacting more often.
Same shrinking core, more active per-member
A shrinking crowd paying for a busy chainCEN.O9.F1
By address count, the submitter population remains overwhelmingly stakeable — but the script segment has grown structurally. At epoch 627: 73.3% base-key (
addr1q) addresses carrying a stake credential, 10.8% base-script (addr1z), 9.2% enterprise-key (addr1v), 4.9% legacy Byron, 1.6% enterprise-script (addr1w), 0.2% base-other. Compared to the earlier snapshot at epoch 384 (87% base-key, <1% script), the shift is clear — base-key dropped 14 pp while base-script grew from 0.4% to 10.8%. The count-based picture remains misleading: the small script population punches far above its weight in fee terms.Headcount remains overwhelmingly stakeable
Most submitters can stake — but the loudest of them can'tCEN.O9.F2
Roughly 30% of fee revenue is generated by addresses that structurally cannot delegate, and this share has been stable since Alonzo. Over the recent 6-epoch window (622–627): enterprise-script (
addr1w) 17.0%, enterprise-key (addr1v) 10.8%, legacy Byron 2.3% — totalling 30.1%. The non-stakeable fee share has oscillated between 18% and 44% since epoch 300, averaging ~25%; the structural floor is set by DeFi contract activity, the ceiling by speculative episodes. At no point since Alonzo has it fallen below 14% — the reward mechanism taxes a constituency it excludes.The fee base is structurally misaligned with the reward base
Most submitters can stake — but the loudest of them can'tCEN.O10.F1
Script transactions are 12.5% of post-Alonzo count but 29.6% of cumulative fees — the DeFi economy pays a 2.4× per-transaction premium. The premium peaked above 3× during the Alonzo era (epochs 310–340), when fewer than 30% of transactions commanded over 60% of fees. It has moderated to ~1.5× in recent epochs but remains structurally above parity. For the sustainability argument, this means per-transaction fee intensity is coupled to script adoption — a variable the current incentive design does not address.
DeFi subsidises the epoch pot
~3,800 smart contracts carry a third of the feesCEN.O10.F2
At epoch 627, ~3,800 script addresses (12% of submitters) generate 36% of fee revenue — the pipeline depends on the continued operation of these contracts. Specifically: 490 enterprise-script + 3,361 base-script = 3,851 actors (12.4% of the submitter population) generated 14,481 ADA in fees — 36.0% of the epoch total. The per-address rate of an enterprise-script submitter (12.1 ADA/epoch) is 14× that of a base-key submitter (0.83 ADA/epoch). The script population grew sixteen-fold since epoch 384 (0.7% → 12.4%) while their fee share held steady around one third — the per-address premium has moderated but the structural dependency has deepened.
Concentration on script activity
Most submitters can stake — but the loudest of them can'tCEN.O11.F1
The top 10 addresses pay 20% of all fees; the top 500 (out of ~147K) pay 58%. Over epochs 622–627, 500 addresses out of ~147K (0.34%) pay the majority of fees. Concentration is heavy-tailed but less extreme than delegation stake (Gini 0.976). Compared to the prior 618–623 window (top-10 = 24.3%, top-500 = 60.8%), the recent window shows a mild de-concentration of 4 pp at the top — driven by a single very-high-volume address whose activity tapered. The fee base sits on a few hundred high-frequency automated actors, not a diffuse retail tail.
High-frequency automated actors (DEX aggregators, exchange hot wallets, arbitrage bots)
The fee floor rests on a few dozen recognisable namesCEN.O11.F2
The top 10 fee payers ran 110,739 transactions over 6 epochs (16.1% of volume) — fee-pot stability hinges on a population small enough to know by name. The top 50 ran 219,720 transactions (32.0%) over the same 6-epoch window. The top fee payers are dominated by recognisable archetypes: a MinSwap DEX-script address leads at 12,105 ADA over 6 epochs; pools tied to NUFI (NuFi exchange-style operator), TITAN, BERRY, and OYSTR appear among the top 10 alongside enterprise-script DEX contracts and bot wallets. The fee floor of the network depends on a population of ~10 actors whose churn risk is not modelled by any incentive parameter.
Single-actor exposure
The fee floor rests on a few dozen recognisable namesCEN.O12.F1
Only 41.8% of fee revenue comes from currently-delegating addresses; the remaining 58.2% comes from addresses outside the delegation set at the snapshot epoch. Across epochs 622–627, the 1.352M delegators at epoch 627 contributed 41.8% of fee revenue (92,538 ADA out of 221,565). The stakeable-but-inactive segment (base addresses whose stake credentials are not in the delegation set) contributed 28.1% (62,340 ADA). The structurally non-stakeable segment (enterprise + legacy) contributed 30.1% (66,684 ADA). The mismatch is symmetric on both sides — the funding base does not match the reward base.
Fee base ≠ reward base
The people who pay are not the people who get rewardedCEN.O12.F2
Only 3.1% of delegators submit any transaction in a 6-epoch window — 96.9% of delegators are passive holders. Of the 1,352,113 active delegators at epoch 627, only 42,082 appear as the first input of any transaction during epochs 622–627 (a 30-day window). The remaining 1,310,031 (96.9%) hold stake, accrue rewards, and never touch the chain. From the other side, the submitter base has 76,561 unique stake credentials over the same window, of which 42,082 (55.0%) are in the delegation set — the rest carry a stake credential that has never been delegated, has been deregistered, or sits idle.
Delegators are passive; submitters are a different population
The people who pay are not the people who get rewardedCEN.O12.F3
In the top 500 fee-paying addresses, the largest segment by fee weight is the population the reward mechanism cannot reach. Top-500 split: no-stake-cred 39.4% (213 addresses, 50,960 ADA), delegating 39.2% (161 addresses, 50,685 ADA), has-cred-not-delegating 21.4% (126 addresses, 27,728 ADA). The pipeline's largest fee contributors are concentrated in the population it cannot reward — half of the heavy-paying actors are structurally outside the delegation game by design (DEX scripts, exchange enterprise wallets), and another fifth are technically inside but have opted out. Any fee-redistribution mechanism that passes value through the delegation channel returns less than 40 ADA in every 100 ADA of fees to the population that paid them.
Heavy-paying actors are concentrated outside the delegation channel
The people who pay are not the people who get rewardedTRE.O1.F1
Monetary expansion is the only material input to the pot — supplies ~99.8%, every epoch, since Shelley. Outside a single recent anomaly at epoch 620 (~5% fee share), fees have never crossed 3% — even during peak NFT/DeFi activity. The pot's trajectory is therefore tied almost entirely to reserve stock and ρ; the formula admits three sources but the mechanism behaves as if it had one
Structural — unchanged since Shelley
Epoch pot compositionTRE.O1.F2
Fee revenue is structurally insufficient — closing the gap requires fee revenue to grow ~100× (two orders of magnitude). Fees contribute ~0.17% of the pot at epoch 623, and even the realistic capacity ceiling (~254K ADA/epoch at 3.1 TPS × 432K s × 0.19 ADA/tx) covers only ~1.3% of the reserve expansion term (~19.23M ADA). Closing the gap requires a throughput upgrade (Leios), a structural shift in transaction demand, and higher per-tx pricing (no single lever suffices); until that crossover, the second source named in the SL-D1 formula is a rounding error
Structural — ~100× fee-revenue gap
Transaction feesTRE.O1.F3
The deposit channel is small and unmeasurable at epoch granularity. Koios exposes a stock-level obligation series (~5.44M ADA average, max 9.26M ADA at epoch 574) but not the per-epoch non-refundable flow that actually enters the pot. Cross-validation against treasury stock deltas leaves a median gap of only ~49K ADA over epochs 211–623 — a rounding error against a pot of ~19M ADA. The third source in the SL-D1 formula is real on the balance sheet but invisible in the budget
Data limitation — Koios coverage
Deposit obligationsTRE.O1.F4
Stake pool operators assemble the pot reliably — block production is not the bottleneck. The cooperative-behaviour gate \min(η, 1) has averaged 0.977 since Shelley and dropped only as low as 0.896 during a single infrastructure stress event (epoch 347). The clamp has activated in only 7 epochs out of 413. Whatever else constrains the budget, the supply-side cooperation the formula nominally polices is not it — the gate is satisfied but never binding
Structural — avg η = 0.977
Block-production ratio (η)TRE.O2.F1
The reserve is half-depleted in 5.7 years and the nominal expansion has already halved. Stock has fallen from 13.29B → 6.45B ADA (a −51.43% decline) over ~5.7 years; the nominal monetary draw has dropped from ~39.9M → ~19.36M ADA/epoch. Because the formula draws a fixed 0.3% of remaining reserve, the decay is exponential — the absolute pot keeps shrinking even when participation does not. The single-source budget identified in TRE.O1 is now visibly thinning, on a schedule the formula cannot reverse
Structural — exponential decay
Reserve stock and monetary expansionTRE.O2.F2
Significant reward pressure begins at epochs 1000–1200 (~2028–2029). At current parameters and participation, the reserve reaches ~2B ADA in this window — at which point per-epoch rewards drop materially. Full depletion is projected around epoch 3500 (~2040s). The window for governance to intervene before the pot becomes too small to incentivise meaningful staking is on the order of 3–4 years
Projected — ~2028–2029
Reserve depletion trajectoryTRE.O3.F1
Less than half of the pools pot reaches its intended recipients. Of the 15.39M ADA allocated to the pool side at epoch 623, only 6.78M ADA (~44%) is distributed to operators and delegators; the remaining ~8.61M returns to the reserve. The mechanism therefore operates at less than half of its design throughput in steady state — the SL-D1 distribution rules are intact, but the pool-by-pool conditions for full payout are not met across most of the landscape
Epoch 623 — 6.78M of 15.39M ADA
Return to reserveTRE.O3.F2
Cumulative undistributed rewards account for roughly three quarters of the current reserve stock. Over 413 epochs the return-to-reserve channel has accumulated 4.61B ADA — about 71% of the 6.45B ADA the reserve holds today. This buffer is a side-effect of incomplete distribution, not a design feature: the reserve has lasted as long as it has largely because the system has been failing to pay out. Any reform that improves distribution efficiency therefore accelerates depletion
Structural — side-effect, not design
Return to reserveTRE.O3.F3
Inactive stake (~43.6% of supply) is the dominant driver of the distribution gap. Out of ~38.55B ADA in circulation, only ~21.75B (~56.4%) participates in delegation; the remaining ~16.8B ADA (~43.6%) earns no rewards but still dilutes the per-ADA share. The decomposition attributes ~70.9% of cumulative return-to-reserve to this non-participating capital. The lever sits upstream of the formula — it is a participation problem, not a distribution-rule problem
Upstream — outside formula control
Return to reserveTRE.O4.F1
Treasury rate (τ = 20%) and monetary expansion rate (ρ = 0.3%) have never been adjusted since Shelley. Both parameters were set on 2020/07/29 and have remained at their day-one values across ~5.7 years of mainnet operation. Decentralisation d was gradually reduced to 0 (epochs 208–257) and k was raised from 150 to 500 (Aug 2020) — but the reward-level parameters that drive every quantity in this section remain frozen, and neither has been the subject of a formal governance proposal
Governance — τ = 20%, ρ = 0.3% constant
Protocol parametersPOL.O1.F1
Less than half the pool pot reaches its targets. Only 6.79M of the 15.53M ADA per epoch budgeted for distribution actually reaches operators and delegators — a 44% distribution efficiency. The other 56% returns to the reserve unused
Epoch 616
Current snapshotPOL.O1.F2
ADA that isn't staked at all is the single largest source of waste. Every epoch, 4.91M ADA is forfeited because roughly a third of the supply sits unstaked — that's 31.6% of the pot, returned to the reserve before the formula even gets a chance to distribute it
Upstream — outside formula control
OverviewPOL.O1.F3
Almost all of the pledge-bonus budget is wasted. Every epoch, 3.43M ADA earmarked as the pledge bonus returns unclaimed — 22.1% of the pot and 95.6% of the bonus allocation. Unlike the participation gap, this loss is entirely within the formula's control
Addressable by formula reform
Why pledge matters — and why this is not zero-sumPOL.O1.F4
Two causes account for almost all the waste; everything else is rounding error. The participation gap and the unused pledge-incentive budget together return 53.7% of the pot to reserve. The remaining sources combined — pledge-not-met confiscation (2.1%), missed blocks (0.5%), oversaturation (0.3%) — add up to less than 3% of the pot
The reform priority is clear
Current snapshotPOL.O2.F1
Almost no operator pledges meaningfully. 78% of staked ADA sits in pools where the operator pledges less than 1% of the stake they manage; the stake-weighted median pledge ratio is 0.07%
Empirical — pledge is absent where stake concentrates
The evidence on mainnetPOL.O2.F2
Pledging earns less than passive delegation, even at maximum scale. A fully-saturated pool whose operator pledges the entire saturation amount earns just 0.68%/yr on that pledged capital — below the 2.3%/yr anyone can earn by passively delegating
Economically irrational to pledge
The playing field: what pledge actually buysPOL.O2.F3
The pledge bonus budget goes unused. 3.4M ADA every epoch — 22% of the pool pot — is reserved for the pledge bonus, but the formula's distribution mechanics return almost all of it to the reserve unclaimed
Structural cost of maintaining a₀ = 0.3
Current snapshotPOL.O2.F4
Small pools cannot earn meaningful pledge bonus, no matter how committed the operator. The formula scales the bonus by pool-size squared (ν²) before pledge is priced — at every pledge ratio. A pool at 10% of saturation is structurally capped at 1% of the bonus a saturated pool earns, regardless of operator commitment
Algebraic — pre-empirical
The envelope mechanics — and the three structural defects of APOL.O2.F5
Pledging more pays less past a sweet spot — for almost every pool on mainnet. For any pool below half-saturation, the bonus peaks at an interior pledge ratio π^ = 1/[2(1-ν)] < 1, and pledging beyond that point reduces the bonus. At ν = 0.3 the peak sits near 71% pledge ratio, and full self-pledge pays 16% less than the peak. The formula formally rewards operators for under-committing*
Algebraic — pre-empirical
The envelope mechanics — and the three structural defects of APOL.O2.F6
The strongest possible commitment signal is paid the worst-case reward. When the operator pledges 100% of their own pool (π = 1), the bonus collapses to pool-size cubed (ν³). A half-saturated pool earns 12.5% of the maximum bonus; a pool at 10% of saturation earns just 0.1%
Algebraic — pre-empirical
The envelope mechanics — and the three structural defects of APOL.O3.F1
The production threshold is physics-based — emergent from slot-leadership, not a parameter. At today's active stake (~21.18B ADA), regular block production starts at ~3M ADA, the stake level at which a pool has a 95% probability of producing at least one block per epoch (λ=3 in the Poisson process) — the point where yield is usable as a delegator signal. The 1-block-expectation point (~0.97M ADA) is a special case at the bottom of the regime: below it, pools have less than one expected block per epoch and rewards are noise, not signal. The threshold rises with active stake — at full supply (~38.5B ADA), the 3-block point climbs to ~5.35M ADA, pushing more pools below it
Physics — emergent, not a parameter
Production thresholdPOL.O3.F2
Operator-viability is volatile and tracks the ADA/USD price; at today's prices it coincides with the production threshold, but separates upward when ADA falls. A single-pool operator needs to extract roughly 390 ADA/epoch today (~7,160/yr cost floor — infrastructure ~1,320–3,240/yr + DevOps labour ~5,160/yr min — at0.25 ADA). At the production threshold (~3M ADA stake), the pool generates ~2,145 ADA/epoch on average, more than enough — viability and production coincide. At lower ADA prices the cost in ADA rises, and the reliable-income floor rises above production. The threshold is therefore not drawn as a fixed line in the rest of this document; it is treated as a separate volatile concept whose stability is a question for the V2 spec, not the diagnostic
Economic — volatile, ADA/USD-dependent, treated separately
Viability threshold (orders of magnitude only)POL.O3.F3
The saturation cap is a formula ceiling — z₀ = 1/k. At k = 500, z₀ = 77M ADA. Beyond it, the per-pool reward stops scaling with stake. The cap exists to limit any single pool's share of the network's reward — a per-pool anti-Sybil device, fixed by parameter
Formula — fixed by parameter
Saturation thresholdPOL.O3.F4
The cleaner future state collapses viability into production. Zeroing
minPoolCost (or making it scale with the reward curve) removes the protocol-imposed floor, but the real labour-cost floor remains and viability stays above production unless a structural mechanism is introduced — e.g., a Rocket-Pool-style shared-operations path that lets sub-scale stake fund a single operator. The §1.2.4.4.1 Enforce the production threshold proposal pairs both: a minPoolCost reform AND a sub-threshold path for stake that cannot reach the production line on its ownDesign intent — simplification path
ConclusionPOL.O3.F5
Tier boundaries are dynamic — they shift with active stake, fixed costs, and k. When a CIP proposes k = 1000, the saturation threshold halves to ~38.5M and every "Large healthy" pool reclassifies as near-saturation. When active stake grows from 21B to 35B ADA, production and viability lines rise proportionally. The taxonomy is a framework for reasoning across scenarios, not a snapshot of today's values — reform evaluation must track where the boundaries move
Framework — not a snapshot
ConclusionPOL.O4.F1
1,987 pools (73%) sit below the production threshold (~3M ADA) and produce blocks too sporadically to carry consensus reliably. At the production threshold a pool has a 95% probability of producing ≥1 block per epoch (λ=3); below it Poisson noise dominates and yield is statistical noise. Collectively these pools hold only 2.7% of active stake — ghost capacity the protocol admits but cannot reliably activate; neither delegators nor the consensus layer can read a meaningful signal from any single pool in this segment
Empirical — sub-block tail
Pool distribution by tierPOL.O4.F2
The productive segment (731 pools, 27%) holds 96.6% of staked ADA — the actual consensus-carrying population. This is the segment any reform of k, the pledge curve, or the saturation cap actually moves. Pool count is not stake share: the inversion of headline pool count vs. stake share is the defining structural feature of the landscape
Empirical — productive segment
Pool distribution by tierPOL.O4.F3
The productive segment cannot be read pool-by-pool — it must be read at the entity level. Many of the 731 productive pools are operated as fleets by a smaller set of entities; pool-by-pool analysis of the upper tail conceals the actual concentration and over-counts independent actors. The pool view tells us how much stake is productive; only the entity view tells us who controls that stake and who responds to the pledge signal. The entity-level breakdown — counts, archetypes, pledge stances — is the subject of POL.O5 — entity-level analysis
Methodological — entity lens required
ConclusionPOL.O5.F1
Three quarters of the network's productive stake sits in 83 named entities. They operate 449 productive pools (≥3M ADA at epoch 623, the production threshold) holding 16.24B ADA — 76.7% of productive stake. 71 are strict multi-pool fleets; 12 are single-pool operators attributed by ticker, metadata, or relay clustering. The remaining 23.3% (4.94B ADA across 284 pools) sits in unattributed single-pool operators — attribution is a lower bound
Structural — concentration
Attribution method and headline figuresPOL.O5.F2
48 MPO entities concentrate 14.55B ADA — 68.7% of productive stake — in operators each big enough to fill a saturation cap. These are the saturation-scale MPOs (aggregate stake ≥ z₀ ≈ 77\textM ADA). Concentration at the entity tier is sharper than the 76.7% headline once the 35 sub-saturation entities (1.69B ADA, multi-pool by form but single-pool-like in economics) are stripped out. The top 5 of the 48 alone hold 5.44B ADA — 25.7% of productive stake (Coinbase, CHUCK BUX, Figment, Binance, Kiln); the top 10 hold 39.1%. The split is purely structural — pledge is taken up next
Entity-tier concentration — 68.7% of productive in 48 actors
The scale-class dividePOL.O5.F3
Among the 48 saturation-scale MPOs, 42 are zero-pledge. They sit below the 2% pledge ratio bar and forfeit ~556K ADA/epoch (~40.6M/year) in pledge bonus rather than lock capital that would qualify for it. The responsive middle is tiny: 1 marginal, 3 compliant, 2 exemplary. The pledge gap is universal among saturation-scale MPOs; the bonus penalty (~11–21% of maximum reward for the largest offenders) is a modest tax on operators of multi-million-ADA fleets — not a deterrent
Mass zero-pledge
Pledge compliance classificationPOL.O5.F4
Architecture explains 10 of those 42 — exchanges and institutional validators legally cannot pledge. CEX (6 entities, 119 productive pools) + IVaaS (4 entities, 54 productive pools) hold 7.39B ADA — 34.9% of productive stake — at architecturally zero pledge. Exchanges custody retail balances; institutional validators run client assets they do not own. Pledging this capital is precluded by the legal/business model, not chosen — no parameter change moves this stake into the pledge game
Architectural barrier — partial explanation
Architectural zero-pledge — CEX and IVaaSPOL.O5.F5
The remaining 32 sovereign MPOs choose not to pledge — they hold 4.80B ADA (22.7% of productive stake) that could enter the pledge game but doesn't. After excluding the 10 architecturally-barred CEX+IVaaS entities, 32 saturation-scale MPOs remain in the zero-pledge bucket — community-branded fleets, independent multi-pool operators, multi-brand fleets, opaque fleets, ecosystem stewards. They have no architectural barrier; they could lock capital and capture the pledge bonus. They don't. This is strategic abandonment, not custodial constraint — and it is the share of the MPO landscape any incentive reform must actually address
Strategic abandonment
The sovereign-MPO puzzlePOL.O5.F6
The mechanism's exemplary signal rests on one private entity. Only two MPO entities clear the ≥80% pledge bar at epoch 623 — Cardano Foundation (99.1%) and Adalite Platform (93.0%). CF pledges by institutional mandate, not economic incentive; remove it and the exemplary band collapses to a single private actor. A Sybil-resistance tool designed for 500 pools is, in practice, a transfer programme for one private entity
Exemplary collapse
The cost of zero-pledgePOL.O5.F7
Zero-pledge dominates every viable tier — no single-tier reform reaches it. Among saturation-scale MPO productive pools, 85.5% of stake (12.44B of 14.55B ADA) sits in zero-pledge pools, and that stake spreads across Healthy, Large healthy, Near-saturation, and Saturated/Oversaturated. A reform targeting one tier leaves the others untouched and propagates secondary effects everywhere; any change reshapes the whole landscape, not just the segment it targets
Reform constraint
Pledge compliance × pool tierPOL.O6.F1
The competitive field of single-pool operators is 3× smaller than the Incentive Mechanism Analysis headline. Lopez de Lara reported 741 'healthy' pools as evidence of a functioning incentive landscape; once MPO fleet members are stripped out, only 284 single-pool operators remain. 61% of the headline were fleet pools — operating under entity-level strategies (delegation source, fee setting, pledge), not the single-pool economics the headline was supposed to be about
The competitive field is 3× smaller than headline
Reassessing the *Incentive Mechanism Analysis* landscapePOL.O6.F2
At single-pool scale, pledging is rationally priced as not worth it. 80.6% of single-pool productive stake (227 of 284 pools) sits in pools whose self-pledge is less than 2% of the stake they manage — call this zero-pledge: the operator has effectively declined the pledge bonus. The economics explain why: at single-pool scale, locking own ADA into the pledge yields at best 0.68%/year while passive delegation pays ~2.3%/year, so the pledge is dominated by the alternative use of capital at every realistic ratio. These operators are not failing to pledge — they are correctly responding to a formula that prices their effort below the delegation alternative.
Rational zero-pledge
Pledge compliance and the policy-sensitive populationPOL.O6.F3
Only 51 single-pool operators (18% of the 284) pledge a non-trivial fraction of their stake — and that small group is the entire population a parameter reform could move. "Marginal" here means pledge ratio between 2% and 30% — operators who have engaged with the bonus but are not capturing it meaningfully (bonus capture scales roughly linearly with pledge ratio, so a 2–30% pledge captures only 2–30% of the available bonus). They hold 685M ADA — 13.9% of single-pool productive stake. Everyone outside this band is either above the bar already (≥30%, very rare at single-pool scale — 6 operators total) or below it (zero-pledge — bonus not worth the opportunity cost); so any parameter reform that aims to move pledge upward has only this 51-operator middle to work with
Target for parameter reform
Pledge compliance and the policy-sensitive populationPOL.O6.F4
Single-pool operators are quietly losing ground — the segment is shrinking, but its pledge mix is not improving. Single-pool operators' share of active stake fell from 28.0% to 25.0% since epoch 583 (a 3 percentage-point loss in 35 epochs). Inside the segment, the split between zero-pledge / marginal / compliant operators has barely moved across the same window — the decline is in volume, not in behaviour. Capital flowed away from single-pool operators toward MPO fleets; the operators who remained kept the same pledge mix
Slow structural decline
Historical evolution — has the single-pool landscape always looked like this?POL.O7.F1
The pledge mechanism's actual reach is 36% of active stake — 7.89B ADA. Strip out the entities that don't respond to the pledge signal, and what remains (single-pool operators + the few MPOs that do pledge meaningfully) carries 7.89B ADA out of ~21.7B active. The other 13.89B ADA — 65.6% of productive stake — is held by entities the bonus does not reach. The mechanism was designed to discipline operator behaviour across the whole network; in practice it operates on roughly a third of it.
The actual incentive-responsive arena
The pledge mechanism's actual reachPOL.O7.F2
MPO non-response splits into three distinct populations — confusing them is what keeps reform from working. Architectural: 10 entities (CEX + IVaaS) holding 7.39B ADA that cannot pledge by law/business model — exchanges custody retail balances, institutional validators run client assets they don't own. Strategic: 32 sovereign saturation-scale MPOs holding 4.80B ADA that could pledge but choose not to — at their scale the bonus pays less than passive delegation. Sub-scale: 35 sub-saturation MPOs holding 1.69B ADA whose entire fleet cannot fill one saturated pool — pledging is mechanically too small to matter. These are three different problems wearing the same label
Three distinct populations
The full picturePOL.O7.F3
No single parameter change addresses all three populations — each requires a different lever. Architectural responds to constitutional or contractual change (or to accepting that ~7.4B ADA is permanently outside the mechanism's scope). Strategic responds to altering the relative payoff of pledging vs delegating — i.e., reforming the pledge-yield curve so the bonus is no longer dominated. Sub-scale responds to a structural path (e.g., a shared-operations layer) for stake that cannot reach saturation alone. Raising a₀ — the "calibration" lever — addresses only the strategic group, and weakly
Reform constraint — three levers, not one
The full pictureOPE.O1.F1
The passive channel dominates the active one — the flat fee delivers 60% of operator revenue, the commission only 40%. Across the retail market, the fixed ₳/epoch flat fee accounts for 60% of operator revenue; the proportional commission accounts for the remaining 40%. The channel that dominates revenue is the one operators almost never touch.
Structural — the passive channel dominates the active one
Operator profitability versus delegator returnOPE.O1.F2
Governance halved the floor 178 epochs ago — 64% of pools have not moved. The
minPoolCost floor was halved from 340 ₳ to 170 ₳ through a successful governance action. 178 epochs later (~1.5 years), 64% of pools still declare 340 ₳ — including most of the largest entities. The price most operators charge is not a pricing decision; it is a governance setting they never revised.Governance inertia — driven by the largest entities
The flat fee (fixed cost)OPE.O1.F3
The flat fee is a binary choice, not a pricing parameter. 89.5% of pools declare one of two floor values (170 ₳ or 340 ₳). The "custom" values that exist are mostly near-floor inertia (Binance 345, Everstake 400) or commission-mode extraction. Operators are not pricing — they are picking a floor.
The flat fee is a binary choice, not a pricing parameter
The flat fee (fixed cost)OPE.O1.F4
The flat fee is regressive by design — a fixed ₳ levy on a size-proportional reward. Because the pool reward grows roughly linearly with stake σ but the flat fee is fixed in ₳, the fee's share of pool reward follows a 1/σ hyperbola — 47.5% of pool reward at the sub-reliable tier, 1.5% at near-saturation. The same 170 ₳ that disappears in a saturated pool's accounts is a third of all rewards in a sub-reliable pool's accounts
Regressive by design — a fixed-in-₳ levy on a size-proportional reward
The flat fee (fixed cost)OPE.O1.F5
No other major PoS protocol uses a flat fee — the fixed-cost model is unique to Cardano. Ethereum (validator-flat reward via the protocol), Solana (commission), Cosmos (commission), and Polkadot (commission) all price validators on proportional rules that scale with stake. The Cardano flat fee has no cross-chain precedent or comparator — meaning the regressive dynamics in F4 are unique to this network
Unique to Cardano — no cross-chain precedent
The flat fee (fixed cost)OPE.O2.F1
The commission distribution is bimodal with an 89pp empty middle. 87% of pools set a commission at or below 10%; 12% set ≥ 99% (privatisation). The 89-percentage-point range between 10% and 99% contains only 12 pools. No economic attractor exists between competitive pricing and total extraction — operators either compete or fully privatise their pool, and almost no one in between
No man's land — no attractor between pricing and extraction
The commission (margin)OPE.O2.F2
The market self-organises into four discrete tiers, not a continuous price distribution. No-commission (170 pools, 17.9% — almost certainly self-pledged), competitive (658 pools, 69.1% — at or below 10%), no man's land (12 pools, 1.3% — between 10% and 99%), privatisation (112 pools, 11.8% — at or above 99%). The four bands are an emergent equilibrium, not a design choice — the formula offers a continuous parameter and operators reduce it to four economic stances.
The market self-organises into discrete tiers
The commission (margin)OPE.O3.F1
A fifth of productive stake is custodial — and it splits into three distinct mechanisms, not one. 79 entities operating 143 pools hold 4.55B ADA — 21.1% of productive stake in custodial pools. The split: (i) by pledge (10 entities, 36 pools, 1.59B — operator self-funds the pool); (ii) by extraction (57 entities, 79 pools, 2.04B — high commission on inert delegators); (iii) by delegation (15 entities, 28 pools, 0.92B — typical delegation ≥100K ₳). Each mechanism is detectable from on-chain observables and produces a different operator economics
Three distinct mechanisms
Custodial versus retailOPE.O3.F2
The median delegation is what separates retail from custodial — not the mean. Custodial-by-delegation flags pools where the per-pool median delegation (db-sync
epoch_stake) is ≥ 100K ₳ — i.e., where the typical delegator is a whale, not the average dragged up by one whale. For comparison, a delegation of 50K ₳ is already in the top 1.5% of all delegations on the network. The median measures the delegator's experience; the mean measures capital concentration. They are not the same signal.The median measures delegator experience
Custodial by delegation — the median delegation signalOPE.O3.F3
Each custodial mechanism produces a different economic outcome — by an order of magnitude. Median operator revenue per entity: custodial-by-pledge: 1,759,252 ₳/yr (operator captures 100% of rewards on self-funded pools); custodial-by-extraction: 281,831 ₳/yr (privatisation commission on inert-delegator pools); custodial-by-delegation: 29,329 ₳/yr (small whale pools, not revenue machines). Treating "custodial" as one population obscures a 60× revenue spread
Each custodial mechanism is its own economy
SummaryOPE.O4.F1
Once custodial pools are filtered out, the retail market is bigger than mean-based estimates suggested — and it includes institutions. 809 retail pools, 516 entities, 17.02B ADA, 1,272,836 delegators. The retail-by-median-delegation classification keeps Coinbase, Binance, Kiln and other institutional operators inside the retail market — because their typical delegator is a small holder, even if the institutional brand is large. The retail market is the population the mechanism was designed for; it is the population every reform has to address
The retail market is larger than mean-based estimates
SummaryOPE.O4.F2
The typical retail delegator holds 87 ₳ — and the median is remarkably uniform across operator types. The median retail delegation across the entire 1.27M-delegator population is 87 ₳. Per-operator-type medians range from 45 to 962 ₳ — a tight 20× span across pool types from independent single-pool to Coinbase. Retail delegators are small, homogeneous, and yield-insensitive at this scale — any reform that prices below 87 ₳/year of incremental yield will not change their behaviour
Retail delegators are small and homogeneous
Operator profitability versus delegator returnOPE.O5.F1
A delegator pays 18× more for 0.30 percentage points of extra yield. A delegator in a sub-reliable pool pays a 48.3% effective price (flat fee + commission as % of pool reward) for a 2.04% net return. A delegator in a near-saturation pool pays 2.7% for 2.34% — 18× lower price for 0.30pp more return. The effective price is a mechanical artefact of pool size (the flat fee's 1/σ regression), not a market signal — operators are not pricing competitively, the formula is pricing them
Effective price is a 1/σ artefact, not a signal
Operator profitability versus delegator returnOPE.O5.F2
Net return converges to a narrow 1.95–2.34% band across the entire retail market — the signal is too weak to drive delegation. Regardless of pool size, operator type, or pricing plan, a retail delegator's net yield ends up between 1.95% and 2.34% — a 0.39 percentage point spread across the whole market. At this resolution, the yield signal cannot discipline operator pricing — delegators are not chasing 0.4pp of return; they are picking on visibility, brand, or convenience
Return signal too narrow to discipline pricing
Operator profitability versus delegator returnOPE.O6.F1
The operators who charge the most earn the least — and vice versa. A sub-reliable single-pool operator absorbs 48.3% of pool rewards but earns only 24,820 ₳/yr. An 11+ pool MPO absorbs only 7.7% of pool rewards but earns 1,035,496 ₳/yr — 42× more revenue at 6× less effective price. The flat fee penalises small-pool delegators without compensating the operators who run those pools — both sides of the small-pool transaction lose
Small pools penalise both sides
Operator profitability versus delegator returnOPE.O6.F2
MPO revenue scales horizontally (more pools), not vertically (higher price). The 11+ pool bracket captures 26.5% of retail rewards through 7 entities. Their per-pool fee is the same 170/340 ₳ floor everyone else uses — they win by running more pools, not by pricing differently. Fleet size, not pricing, drives MPO operator economics — meaning a reform that targets pricing leaves fleet revenue untouched
Fleet size, not pricing, drives operator economics
Operator profitability versus delegator returnOPE.O6.F3
The retail market is dominated by hollow operators — 95% of revenue, 0% pledge. 57 hollow MPOs capture 64.4% of retail rewards; 414 hollow single-pool operators share 31.1%. Together hollow operators absorb 95.5% of retail reward flow through pools that pledge near-zero. The 41 balanced operators (those with meaningful pledge) share only 1.2%. Pledge is not the dominant revenue strategy — neither for fleets nor for single-pool operators
Structural concentration on hollow operators
Operator profitability versus delegator returnOPE.O6.F4
No single-pool operator in the retail market earns a competitive wage for their labour. Median single-pool revenue is ~25,000 ₳/yr (~6,250 at0.25/ADA) — covers infrastructure (~\$1,300–3,200/yr) but not the 5–15 hours/month of skilled DevOps at any reasonable hourly rate. Competitive compensation begins only at the 2-pool MPO tier (~68,700 ₳/yr). The single-pool operator is economically subsidising the network — sustained by non-economic motivation, not by the reward mechanism
Single-pool operators subsidise the network
Is operator revenue competitive? — a market benchmarkOPE.O7.F1
Two thirds of retail delegators sit in pools that pay less than the alternative — yield is not what they are choosing on. 65.9% of retail delegators sit in hollow MPO pools at 2.18% net return; hollow single-pool near-saturation pools offer 2.34% — 0.16pp more — and yet hold only 2.7% of delegators. Delegators are not chasing yield — they are picking on visibility, brand, exchange convenience, or default selection. The return signal does not drive delegation
Delegation follows visibility, not return
Operator profitability versus delegator returnOPE.O7.F2
The pledge premium is negative in the retail data — balanced operators deliver less net return than hollow ones. Balanced (genuine pledge commitment) operators deliver a median net return of 1.98%; hollow operators deliver 2.08%. The reason is mechanical: balanced single-pool operators incur a 1.06pp flat-fee drag vs 0.47pp for hollow ones, and that drag overwhelms whatever pledge premium the reward curve is supposed to add. The incentive mechanism's core assumption — that pledge commitment translates to better delegator outcomes — does not hold in the data
The mechanism's core assumption fails
Operator profitability versus delegator returnOPE.O8.F1
The delegator yield has fallen from 5.3% to 2.0% in 5.5 years and the decline is built into the formula. Yield has tracked reserve depletion with R² = 0.99 across 413 epochs. Projection from epoch 623 (~April 2026): ~1.7% within ~12 months, sub-1.5% within ~20 months (~Q4 2027), sub-1.0% within ~42 months (~Q3 2029). The decline is irreversible without protocol-level intervention — it is built into the monetary expansion formula. The entire yield surface descends as a unit; no pool-level strategy can offset the macro trajectory
Yield decline is structural, not pool-level
The yield trajectory — level and declineOPE.O8.F2
The confiscatory zone expands upward every epoch — the failures in §4 are not static, they get worse mechanically. As the epoch pot shrinks, the flat fee (fixed at 170/340 ₳) consumes a growing share of pool rewards — the confiscatory zone from §4.1 — The flat fee (fixed cost) expands upward. The 0.39pp retail yield spread compresses proportionally: at 1.0% base yield (~Q3 2029), the same relative dispersion produces ~0.20pp — indistinguishable from block-production noise. Pools productive today will cross the sub-reliable threshold purely from macro depletion. The failures documented in §4 are not static — they degrade every epoch
Failures degrade every epoch
The yield spread — structural compressionOPE.O8.F3
The declining yield is a selection ratchet against small single-pool operators. The flat fee is fixed in absolute terms while the epoch pot shrinks — the confiscatory zone expands upward every epoch. Single-pool operators bear the full drag with no fleet to amortise it; multi-pool operators are insulated by horizontal scaling. The structural feedback loop (yield compression → confiscatory expansion → single-pool attrition → delegation migration → fleet concentration) drives the centralisation the mechanism was designed to prevent
The mechanism selects against its smallest operators and reinforces its largest
The yield spread — structural compressionOPE.O9.F1
At 2.0%, Cardano sits below the USD risk-free rate and at the bottom of the PoS landscape. Cardano's current 2.0% delegation yield is below the USD risk-free rate of 4.3% and at the bottom of the PoS chains' yield ladder. No other major chain combines this low a yield with liquid, non-custodial, slashing-free design. The low return is the cost of that design — but the design now asks delegators to accept a yield below the risk-free rate, which only conviction-driven holders will do
Yield is uncompetitive vs alternatives
The yield in context — cross-chain and cross-asset comparisonOPE.O9.F2
The mechanism's premise depends on ADA appreciation that hasn't materialised — and if it doesn't, only conviction-driven holders remain. The reward formula was designed around a monetary regime where ADA itself appreciates (the reserve-depletion design implies deflationary-like behaviour as the supply approaches its cap). In practice, ADA price has not delivered that appreciation, leaving delegators with low yield + uncertain price. The mechanism's assumption — that yield-sensitive delegators allocate based on competitive returns — collapses to a self-selected pool of long-conviction holders, who do not respond to the formula's pricing levers. If the deflation premise fails, the psychological pressure compounds: there is no yield case AND no appreciation case, only a conviction case — which the formula cannot manufacture
Yield + price = double-sided pressure on the conviction case
The yield in context — cross-chain and cross-asset comparison