Cardano's governance transition gets flattened, in a lot of recent coverage, into a single event — whichever hard fork happened most recently. That's backwards on two counts. The real transition was a sequence spread across nearly two years, not one upgrade. And the hard fork generating headlines as this publishes, Protocol 11 (code-named van Rossem), isn't part of that sequence at all — despite a claim making the rounds that it "replaces delegated-representative voting with full stake-weighted on-chain governance." It doesn't do that, because that system was already built and switched on well before van Rossem existed. Here's the actual timeline, and then what van Rossem really is.
From Voltaire to CIP-1694
Cardano's roadmap has always been organized into five named eras: Byron (bootstrap), Shelley (decentralization), Goguen (smart contracts), Basho (scaling), and Voltaire. Voltaire is the last of the five, and its job description was narrow: move control of the protocol from its three founding entities — IOG, EMURGO, and the Cardano Foundation — to ADA holders.
Control, in this context, means something specific: the power to bind protocol parameters, treasury spending, and future upgrades through votes recorded on-chain, not the power to post an opinion in a forum. Cardano already had a form of community voting before Voltaire: Project Catalyst let ADA holders direct treasury-adjacent grant funding toward proposals. But Catalyst voting never bound the protocol itself. It allocated money. It didn't have enforcement power over the chain.
The blueprint for the binding version is CIP-1694 (Cardano Improvement Proposal 1694) — a specification written by the community, not handed down by IOG — defining three governance bodies, seven categories of on-chain action, and a threshold for each. Everything below is CIP-1694 being switched on in stages.
Chang: turning the switch on
The Chang hard fork went live on 1 September 2024, moving the network to Protocol version 9 and activating the Conway-era ledger rules CIP-1694 depends on. Chang's job wasn't to hand over full control immediately — it built the scaffolding and left it in a deliberately limited bootstrap state.
The centerpiece of that scaffolding was an Interim Constitutional Committee (ICC): seven organizations, seated for 73 epochs (roughly a year), standing in for the elected committee that would come later. During this bootstrap phase, the ICC alone could approve protocol parameter changes, and the ICC together with sufficient SPO (stake pool operator) support could initiate a hard fork. DReps — delegated representatives, the people or organizations ADA holders vote through — could register during this window, but their votes didn't yet carry CIP-1694's full weight. Chang built the house. Nobody had moved in yet.
Plomin: DReps get real power
That changed with Plomin, ratified and enacted on 29 January 2025 at 21:45 UTC, bringing the network to Protocol version 10. Plomin needed more than a bare majority to pass: over 51% SPO approval, plus over 67% ICC approval confirming the fork was constitutionally sound. Once enacted, it unlocked the full CIP-1694 voting set — ADA holders could vote directly on governance actions, or delegate that vote to a DRep, across protocol parameter changes, treasury withdrawals, and hard-fork initiations.
Plomin also introduced a practical detail that still trips up wallet users: after this fork, withdrawing staking rewards requires a DRep delegation on record. It doesn't have to be an active DRep — Cardano's two built-in options, Abstain and No Confidence, satisfy the requirement without endorsing anyone — but some choice has to exist. It's a small piece of plumbing, and it's why "why do I need to pick a DRep to get my rewards" started showing up in support threads in early 2025. It's also a genuinely different tradeoff than Ethereum staking, which ties reward withdrawal to validator exit mechanics rather than a governance choice.
This is the moment DReps actually got real power — in January 2025, five months after Chang, and eighteen months before Protocol 11 shows up in this story at all.
Three bodies, one system
CIP-1694's structure, fully live since Plomin, splits authority three ways so no single group can push through the highest-stakes decisions alone.
| Body | Who | What it does | What it can't do |
|---|---|---|---|
| DReps | Anyone can register; ADA holders delegate voting power, vote directly, or select Abstain / No Confidence | Vote on parameter changes, treasury withdrawals, hard forks, constitutional amendments | Override the Constitutional Committee's ruling on legality |
| SPOs | Stake pool operators; votes weighted by delegated stake | Mandatory say on hard-fork initiation and certain parameter classes | Ratify an action the Committee finds unconstitutional |
| Constitutional Committee | An elected body, currently mid-transition (see below) | Checks whether a passed action complies with the Constitution | Reject an action just for being unpopular — it isn't a merit gate |
That last row is the important distinction: the Committee is a legality check, not a taste check. It can strike down an action for violating the Constitution, but isn't supposed to veto something merely because it disagrees with the policy. It can also be resized or replaced through the same governance process it oversees, so it isn't a permanent fixture sitting above the system.
It's a different shape than delegated proof-of-stake systems that route both block production and governance influence through one body — Tron's SR model, for example, concentrates both in its elected Super Representatives. Cardano deliberately keeps stake-weighted voting and constitutional review as separate checks on each other.
The Constitution: from convention to chain
The document the Committee checks actions against didn't originate as a whitepaper — it came out of an in-person drafting process. A Constitutional Convention convened at the University of Buenos Aires and the Hyatt Regency Nairobi in early December 2024, and 95% of the delegates present supported the drafted text.
That draft was ratified on-chain on 23 February 2025, clearing the required 75% DRep threshold with 85% actual support, alongside unanimous ICC approval. The interim committee's placeholder role ended when the first fully community-elected Constitutional Committee — seven members, chosen by DRep and SPO vote — was confirmed by July 2025.
The committee hasn't stayed static since. When the Cardano Atlantic Council retired its seat effective 25 November 2025, the committee dropped to six members. A snap election ran from 17 November to 5 December 2025, and Cardano Curia was elected to restore the seventh seat. A larger turnover is underway as this publishes: an election for four of the seven seats is running 28 June through 23 July 2026, with ten candidates standing. Whoever wins will likely cast their first votes on van Rossem's constitutionality, covered below.
How a governance action actually passes
Mechanically, a governance action is a transaction — it carries a deadline and is identified by a transaction hash and output index — falling into one of seven categories defined by CIP-1694: a motion of no-confidence, a change to the Committee's membership, threshold, or terms, a new constitution or guardrails script, a hard-fork initiation, a protocol parameter change, a treasury withdrawal, or a non-binding informational statement.
Thresholds scale with how much damage a bad decision could do:
| Action type | DRep threshold | SPO threshold |
|---|---|---|
| Hard-fork initiation | ~60% | ~51% |
| Treasury withdrawal | ~67% | — |
| New constitution | ~75% | — |
Anyone proposing an action posts a refundable govActionDeposit, returned regardless of outcome — it deters spam rather than biasing the vote. A ratified action isn't enacted instantly; it's staged for a later epoch boundary, which is why van Rossem's timeline below has separate ratification and enactment dates. For more on why hard forks need this kind of staged approval in the first place, see our explainer on evaluating hard forks — most chains still resolve that question off-chain, through core-developer consensus, which is part of why Cardano's approach still reads as unusual.
The treasury and Project Catalyst
Part 1 of this series covered Ouroboros's reward mechanics, including rho and tau — worth a quick recap here, because governance is what actually spends the money those parameters generate. Rho, currently 0.3% monetary expansion of the reserve per epoch, feeds a reward pot; tau skims 20% of that pot into the treasury before staking rewards are paid out. Compounded over years, that mechanism has built a treasury holding more than $1 billion in ADA value as of mid-2026.
Nobody can override how that money is spent except the governance process itself — there's no founder veto. Two 2026 votes make the point in opposite directions. In May 2026, IOG asked for 32.9 million ADA (about $8.6 million) to fund Leios scaling work and quantum-resistant cryptography research. DReps rejected it, with 86.72% opposed as of 19 May 2026 — one of the network's own founding entities losing a treasury vote outright. Separately, a coalition spanning IOG, EMURGO, the Cardano Foundation, Intersect, and the Midnight Foundation proposed withdrawing 70 million treasury ADA for stablecoin, custody, bridge, oracle, and analytics infrastructure.
Project Catalyst — the grant program mentioned earlier as governance's soft predecessor — is going through its own transition. Its operational stewardship moved from IOG to the Cardano Foundation effective 24 February 2026. The program has a real track record: more than $150 million distributed across over 2,200 funded proposals since it began. But Fund15 (18.5 million ADA plus 250,000 USDM) and Fund16 are currently paused, with their earmarked ADA returned to the treasury pending a redesign.
Treasury governance also produces outcomes that look, from outside, like ordinary organizational friction. A proposal to fund Cardano Summit 2026 failed on 30 May 2026 — 65.21% DRep support against a required 66.67% supermajority, missing by less than a point and a half — and the event was cancelled as a result. A smaller, EMURGO-led proposal to fund a Cardano presence at TOKEN2049 Singapore (3.3 million ADA, roughly $793,000) passed around the same time. Scale, apparently, matters to voters.
Protocol 11 (van Rossem): what actually shipped
Which brings us to the upgrade making headlines, and the claim this article set out to correct. Protocol Version 11, code-named van Rossem, is an intra-era hard fork — it doesn't move Cardano into a new named era or touch the ledger's governance semantics. Intersect, the organization coordinating Cardano's open-source development, says so explicitly: van Rossem does not introduce a new transaction share or any significant breaking semantic change.
What it actually contains is plumbing for smart-contract developers: unified Plutus built-in functions across the V1, V2, and V3 script languages, so the same primitive behaves identically no matter which version a contract targets; new primitives including modular exponentiation, a dropList function, BLS12-381 multi-scalar multiplication, an Array type, and a native Value type; enforcement of VRF (verifiable random function) key uniqueness; and fixes to reference-input validation and Constitutional Committee vote-checking logic in the ledger and node software. Useful, technical, and entirely orthogonal to who gets to vote on what.
The genuinely new thing about van Rossem isn't on that list — it's how the upgrade is being decided. It's the first hard fork in Cardano's history proposed and ratified entirely through the on-chain governance process that Chang and Plomin built, rather than scheduled by an engineering roadmap. Even the forks that built the governance system were still coordinated top-down. Van Rossem is the system being asked to approve a change to itself, using only the mechanism it created.
As of Intersect's weekly update on 10 July 2026, van Rossem has cleared both stake-weighted thresholds: 75.37% DRep support against a 60% requirement, and 52.47% SPO support against a 51% requirement. What's still outstanding is the Constitutional Committee's legality check — four of seven members had voted as of that update, one short of the five required. The next possible ratification epoch boundary falls on 13 July 2026, with enactment expected around 18 July 2026 if the Committee vote clears in time. As of this writing, it hasn't enacted yet, and with the Committee election running concurrently through 23 July, the vote may resolve one way or the other by the time you're reading this.
The honest part: does turnout back up the claim?
Here's what gets skipped when Cardano's governance system gets held up as proof of decentralization: the mechanism is one thing, and participation in it is another, and right now they don't tell the same story.
Total registered DRep voting power sits around 6 billion ADA against roughly 36.5 billion ADA in circulation. Most ADA in existence isn't delegated to active governance at all. Of the ADA that is delegated, roughly half sits in the default Abstain option rather than with a representative actually voting a position. And there's no ceiling on how concentrated the active portion can get: the single largest DRep, Yoroi Wallet, holds more than 500 million ADA — about 14% of all delegated voting power — with no saturation cap. Stake pools have one; Part 1 covered why that guardrail matters for decentralizing block production. Governance never got the equivalent.
Turnout on individual votes is thin even by the standards of on-chain governance generally. A June 2026 Catalyst-linked budget vote, measured at an epoch 636 snapshot, saw 5.07 billion of the 6.01 billion registered ADA (84.39%) count as valid participating power — moved through just 113 total voters. A handful of large DReps can single-handedly decide a supermajority outcome; that's not a hypothetical, it's what that arithmetic already shows.
And yet the IOG treasury rejection cuts the other way: a founding entity asked for money in front of the entire system and lost, decisively. That's not a rubber stamp for its own creators — whatever else is true about turnout, the mechanism has real teeth.
Both things are true at once. Cardano has built what's plausibly the most carefully engineered governance system in the industry — three separate bodies, thresholds scaled to risk, a written constitution, a legality check that isn't decorative. Whether enough ADA holders are actually showing up to use it is a separate, less flattering question, and the honest answer right now is: engineered, yes; broadly participated in, not yet. Van Rossem clearing this same machinery — assuming it does — demonstrates the system working as designed. It says nothing about whether the numbers behind that 75.37% represent Cardano, or just its most active few hundred wallets.
