An application able to sign Eth2 artefacts (attestations and blocks) using BLS12-381 private key.
Web3Signer issues are tracked in GitHub.
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james-prysm/web3signer
Web3Signer is an open-source signing service capable of signing on multiple platforms (Ethereum1 and 2, Filecoin) using private keys stored in an external vault, or encrypted on a disk.
JavaApache-2.0