Crypto : The ECB Accuses DeFi of Masking Massive Centralization

The ECB clearly challenges one of the founding narratives of modern crypto. In practice, several major DeFi protocols remain concentrated in the hands of few, especially when looking at actual governance rather than just marketing talk. This is the gist of the working paper published this week, which observes a strong concentration of governance tokens and voting power on Aave, MakerDAO, Ampleforth, and Uniswap.

A Direct Attack Against the Crypto Narrative of Decentralization

According to the study, the top 100 crypto holders control more than 80% of the governance tokens across the four protocols examined. Even more striking, the top five wallets concentrate between 36% and 59% of the supply depending on the case.

In other words, crypto DeFi may seem diffuse at the surface, with thousands of addresses visible on the blockchain, while remaining very tightly held at the top. The paper adds that the most active voters are often delegates, which can reinforce the power of a small core of actors rather than truly broadening participation.

However, an important nuance must be kept. The ECB speaks here through a working paper, meaning a research document intended to feed the debate. The institution itself clarifies that these papers are works in progress and the opinions expressed do not necessarily reflect its official position.

What the Study Actually Measures, and What It Doesn’t

The paper does not claim to demonstrate that all crypto DeFi is an illusion. It mainly measures governance. Simply put, it looks at who holds the tokens, who votes, who receives delegations, and which decisions really pass through these mechanisms. This is not exactly the same as measuring the technical decentralization of a protocol.

The method relies on two observation periods, November 2022 and May 2023. The authors concentrate on Ethereum, which accounted for about 57% of the total value locked in DeFi at the time studied. The four protocols selected together comprised about 32% of this ecosystem, with 248 governance proposals included in the analysis out of 1,051 recorded.

But the study also has its blind spots. The data was manually collected from public and pseudonymous sources. The authors themselves acknowledge possible inaccuracies, missing information, and the inability to include crypto protocols like Curve or dYdX due to insufficient data. This is not a minor detail. It is actually a major limitation when trying to draw a general conclusion about all of DeFi.

The Real Controversy Lies in the Chosen Threshold

The sharpest criticism comes from Bill Hughes, a lawyer at Consensys. According to him, the paper stacks real numbers, then applies a subjective reading of the spectrum between centralization and decentralization. His reproach is therefore not that the data is entirely false, but that it leads to a standard nearly impossible to meet.

This is where the debate becomes political. The document explains that crypto decentralization exists on a spectrum, while stating that “full decentralization” is not achieved in the sample studied. It also points out that there is no clear threshold to define what constitutes complete decentralization.

Yet this ambiguity matters a lot in Europe. MiCA stipulates that crypto services provided in a fully decentralized manner, without intermediaries, should not fall within its scope. At the same time, the AMF reminds that the text also targets activities provided or controlled directly or indirectly by persons or entities, including when part of the service is executed in a decentralized manner. The battle is therefore no longer only about technology. It concerns proof of absence of control.