Besu Postmortem On Deposit Addresses

Quick Take

Besu postmortem on Holesky chain split.
Offchain Labs introduces Onchain Labs.
Aave V3 goes live on Celo.
ELI5 on Ethereum validator exits.

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Besu Postmortem On Holesky Chain Split

The Besu team released a postmortem analyzing changes in Ethereum’s specifications and Besu’s codebase that led to the omission of the deposit contract address for the Holesky and Sepolia testnets, which led to a supermajority chain split on Holesky. The report found that EIP-6110 only specified the Mainnet deposit contract address, leaving testnet addresses unspecified. There was also no cross-client verification mechanism for contract configurations. By default, the Besu client uses the Mainnet address when no testnet address is provided. To prevent similar issues, Besu recommends that Ethereum clients standardize configurations, avoid relying on defaults, fail early when values are missing, and explicitly include testnet configurations in specifications.

Offchain Labs Introduces Onchain Labs

Offchain Labs, in collaboration with the Arbitrum DAO, introduced Onchain Labs—an initiative dedicated to supporting emerging apps on Arbitrum. Onchain Labs will provide early-stage teams with general product and go-to-market guidance, leveraging Arbitrum’s 100-250ms block times and broad compatibility through Stylus to foster industry-leading innovation. Committed to fair launches, Onchain Labs will focus on experimental projects. The first project will be unveiled soon.

Aave V3 Goes Live On Celo

Aave V3 is now live on Celo, an L2 built on the OP Stack, making it the 14th supported chain on Aave. Users can now supply or borrow CELO, USDC, USDT, cUSD, and cEUR on the network. Aave is the largest DeFi lending protocol with over $17 billion in TVL. Celo will complete its migration to an L2 on March 26, 2025.