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The WBTC/BTC aggregator address had an invalid EIP-55 checksum (0xfdFD9C85aD200c506Cf9e21F1FD8dD01932FBB23), causing web3's get_contract to raise InvalidAddress and crash the peg monitor. Fixed the casing (D -> d before 01932). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Problem
The peg monitor crashed on startup:
The WBTC/BTC Chainlink aggregator address in
utils/pegged_assets.pyhad an invalid EIP-55 checksum. Whenutils/chainlink.pypasses it to web3'sget_contract, web3 validates the checksum and raisesInvalidAddress, crashing the run.Fix
Corrected the checksum casing — the
Dbefore01932should be lowercased:0xfdFD9C85aD200c506Cf9e21F1FD8dD01932FBB230xfdFD9C85aD200c506Cf9e21F1FD8dd01932FBB23This is the same address (Chainlink WBTC/BTC feed on Ethereum mainnet), just correctly checksummed.
Verification
Audited all
ChainlinkFeedaddresses inpegged_assets.pyagainstWeb3.to_checksum_address— all now pass. (The lowercasecUSDdefillama_keyis intentional: DefiLlama keys are not web3-checksum-validated.)🤖 Generated with Claude Code