The Incident
In the first week of November 2019, the Maker Foundation made an announcement that on the surface appeared to be a simple branding exercise but in reality signaled one of the most significant architectural shifts in decentralized finance up to that point. The Foundation declared that Collateralized Debt Positions, the core smart contract mechanism through which users had been minting DAI since December 2017, would be renamed to “Vaults” in the upcoming Multi-Collateral DAI user interface. The rebrand coincided with the final preparations for the launch of Multi-Collateral DAI, scheduled for November 18, 2019, which would fundamentally reshape how the protocol operated.
The timing was deliberate. DAI had just hit its 100 million token debt ceiling on November 9, putting the protocol at maximum capacity under its single-collateral design. The MCD upgrade was not just an incremental improvement — it was a necessary evolution to accommodate the growth that was already straining the system’s limits.
At the time, Bitcoin was trading around $8,813 and Ethereum at approximately $185, according to CoinMarketCap historical snapshots. The broader market had settled into a period of relative calm after the volatility of 2018, but beneath the surface, the infrastructure being built on Ethereum was anything but quiet.
Technical Post-Mortem
Under Single-Collateral DAI, known internally as Sai, the protocol accepted only Ether as collateral. Every CDP was an ETH-backed position, and the entire system’s solvency depended on the price stability of a single, notoriously volatile asset. The liquidation penalty of 13 percent provided a buffer, but it also created a painful user experience during ETH drawdowns, when a cascade of liquidations could amplify selling pressure and destabilize the DAI peg.
Multi-Collateral DAI changed this equation dramatically. Under the new architecture, Vault users could deposit multiple ERC-20 tokens as collateral — initially Basic Attention Token and USDC alongside ETH — creating a more resilient system where the failure of any single collateral asset would not threaten the entire protocol. Each collateral type would have its own risk parameters, including independent liquidation ratios and stability fees, governed by MKR holders through on-chain votes.
The Vault rebrand was technically necessary because the new contracts behaved differently from legacy CDPs. Vaults supported multiple collateral types, integrated directly with the new Dai Savings Rate smart contract, and operated under an upgraded liquidation framework that replaced the fixed 13 percent penalty with more granular, per-collateral-type parameters. Keeping the old CDP nomenclature would have created confusion about which system a given position belonged to.
The migration path from Sai to DAI was itself a complex engineering challenge. Users would need to migrate their positions from the old single-collateral contracts to the new multi-collateral system, a process that the Maker Foundation aimed to make as seamless as possible through a dedicated migration portal. The old Sai tokens would continue to exist but would be deprecated in favor of the new multi-collateral DAI.
Governance Impact
The transition from CDPs to Vaults and from Sai to Multi-Collateral DAI represented the most consequential governance decision in MakerDAO’s history up to that point. MKR token holders had been voting on risk parameters and debt ceiling adjustments since the protocol’s inception, but the MCD migration required them to approve an entirely new system architecture — a set of smart contracts that would govern billions of dollars in collateral.
The governance framework for MCD introduced several new concepts. Risk teams would evaluate proposed collateral types and present their assessments to the community. Each collateral type required its own set of risk parameters: collateralization ratio, debt ceiling, stability fee, and liquidation penalty. This granularity gave governance participants far more control over the protocol’s risk profile but also demanded a higher level of engagement and expertise from voters.
The introduction of the Dai Savings Rate added another governance lever. The DSR would allow any DAI holder to earn a yield by locking their tokens in a dedicated smart contract, with the rate set by MKR governance. This created a powerful tool for peg management — raising the DSR would incentivize holding DAI, supporting the peg from below, while lowering it would encourage spending and lending, easing upward pressure on the peg.
Critics noted that the Foundation’s role in driving the MCD transition highlighted the gap between MakerDAO’s decentralized aspirations and its operational reality. The Foundation had developed the new contracts, designed the migration process, and set the initial parameters. True decentralization, they argued, would require the protocol to evolve beyond foundation-driven development to community-initiated upgrades.
TVL Shifts
The immediate effect on Total Value Locked was expected to be neutral during the transition, as existing collateral would migrate from Sai contracts to the new MCD system. However, the introduction of new collateral types opened the door to significant TVL growth. BAT and USDC holders who had previously been excluded from the DAI minting process could now participate, potentially unlocking new sources of liquidity.
The broader DeFi ecosystem in November 2019 was watching the MCD transition closely. Compound Finance, which had integrated DAI as a core asset in its lending markets, would need to handle the migration from Sai to the new DAI. Uniswap, the automated market maker that had become a primary venue for DAI trading, would need to manage the token swap. The interconnected nature of DeFi meant that MakerDAO’s upgrade was not just a MakerDAO event — it was an ecosystem-wide coordination challenge.
Other DeFi protocols were also growing in November 2019. Synthetix was expanding its synthetic asset offerings, Instadapp was building a smart account layer that aggregated multiple DeFi protocols, and dYdX was operating a decentralized margin trading platform. But all of these protocols, directly or indirectly, relied on DAI as a unit of account, a source of liquidity, or a settlement asset. The health of MakerDAO was inextricable from the health of the broader DeFi ecosystem.
Long-Term Prognosis
The CDP-to-Vault transition and the MCD launch that followed represent one of the most successful major protocol migrations in DeFi history. By moving to a multi-collateral model, MakerDAO addressed the single biggest risk to its long-term viability: over-reliance on ETH as the sole source of collateral. The introduction of USDC as a collateral type was particularly forward-looking, as it created a bridge between the centralized stablecoin world and the decentralized stablecoin world that would prove strategically valuable during periods of extreme market stress.
The Dai Savings Rate proved to be a game-changing feature. By giving DAI holders a native yield without requiring them to lend their tokens through a third-party protocol, the DSR created a baseline demand floor for DAI and gave governance a precision tool for peg management that did not exist in the single-collateral era.
Looking back, the decisions made in November 2019 — the rebranding, the new collateral framework, the savings rate — laid the foundation for MakerDAO to become the backbone of DeFi throughout 2020 and beyond. The protocol that started with a simple idea, overcollateralized ETH backing a dollar-pegged stablecoin, was evolving into a sophisticated financial infrastructure layer capable of supporting a wide range of decentralized financial products. The Vault was not just a new name for an old concept. It was the beginning of a new chapter for decentralized finance.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. The content reflects the state of the MakerDAO protocol and DeFi ecosystem as of November 2019. Readers should conduct their own research before making any investment decisions.
renaming cdps to vaults was marketing but multi-collateral dai was the real deal. suddenly you could mint with bat and usdc too
the branding actually mattered though. cdp confused everyone, vault at least sounds like something you put collateral in
cdp was a terrible name. vault is cleaner but the real upgrade was being able to use multiple collateral types instead of just eth
single collateral SAI was always going to hit a ceiling. multi-collateral wasnt optional it was survival for the protocol
the timing was perfect. hit the ceiling on nov 9, mcd launches nov 18. nine days of maximum stress before the upgrade
hitting the debt ceiling 9 days before the upgrade wasnt luck, they timed the launch around the projected ceiling hit
hitting the 100M debt ceiling 9 days before MCD launch was either brilliant planning or pure luck. knowing the maker foundation, probably both