Eigenlayer Beacon Oracle

This repository contains the smart contract for the Eigenlayer Beacon Oracle. It uses the beacon roots precompile added in EIP-4788 to find the block root for a given timestamp.

Deployments

Currently, the Eigenlayer Beacon Oracle is deployed on the following chains:

• Ethereum
• Holesky

Example transaction:

• Transaction: https://etherscan.io/tx/0x9cd868f8a939a9a35fcb08a5f711c1477ad357b32c196be807f990a7d7a14d57#eventlog
• Reference Slot: https://goerli.beaconcha.in/slot/8791805

Contracts

To deploy the contract on a chain, run the following command:

$ cd contracts
$ forge script script/DeployEigenLayerBeaconOracle.s.sol:DeployEigenLayerBeaconOracle --rpc-url <RPC_URL> --private-key <PRIVATE_KEY> --verifier etherscan --etherscan-api-key <ETHERSCAN_API_KEY> --verify --broadcast

Operator Script

To run the script which periodically updates the oracle, run the following command:

$ cargo run --release

Make sure to set the enviroment variables in .env before running the script.

Cost

To get the Ethereum block corresponding to a date, do the following:

To compute the cost of requesting beacon block roots over the past month, run the following command:

cargo run --bin cost -- --rpc-url <RPC_URL> --relayer-address <RELAYER_ADDRESS> --contract-address <CONTRACT_ADDRESS> --start-timestamp <START_TIMESTAMP> --end-timestamp <END_TIMESTAMP>

Ex. To get the total costs from relayer on Mainnet, run the following:

cargo run --bin cost -- --rpc-url <MAINNET_RPC_URL> --relayer-address 0x44eB418A966ff47f5AF6f48AEa6Afde0bf193a8d --contract-address 0x343907185b71adf0eba9567538314396aa985442 --start-timestamp 2024-03-01T00:00:00+00:00 --end-timestamp 2024-04-01T00:00:00+00:00