Signing Reference

Every signature must bind the active wallet, active chain, and exact business structure.

3 sectionssigning-reference

General rules

Include types.EIP712Domain explicitly in eth_signTypedData_v4 payloads.
When hashing locally with ethers TypedDataEncoder, omit EIP712Domain from the types argument.
verifyingContract is generally the executing wallet address, not the shared app logic address.
For schemes with onchain nonces, read the correct wallet-scoped value before signing and verify chainId and deadline; Dex / NFT Market nonce is an order salt.
Runtime ERC-1271 validation currently accepts a signature only when recovery equals the wallet address.

Current EIP-712 names

1do ExecuteWithSig / 1
ERC8112 Token Transfer / 1
ERC8114 NFT Transfer / 1
Dex Order on 1Do / 1
NFT Market Order on 1Do / 1
Will Plan on 1Do / 1
Session Pay on 1Do / 1

Replay protection

ExecuteWithSig: account-wide incrementing nonce.
ERC-8112: scoped by asset + to.
ERC-8114: scoped by asset + tokenId.
Dex/NFT Market: order hash is marked consumed on fill or cancellation.
Will: willVersion + activePlanHash. Session Pay: cumulative newTotalPaid + revoked state.