Verify a signed offer. Dispatches to EIP-712 recovery or JWS verification
based on offer.format. For JWS-format offers, options.resolveJWSKey
must be supplied (see JWSKeyResolver).
Returns { valid: true, signer, payload } on success, or { valid: false }
on any failure. The signer field carries the recovered EVM address for
EIP-712 inputs and the JWS header's kid (when present) for JWS inputs.
Verify a signed offer. Dispatches to EIP-712 recovery or JWS verification based on
offer.format. For JWS-format offers,options.resolveJWSKeymust be supplied (seeJWSKeyResolver).Returns
{ valid: true, signer, payload }on success, or{ valid: false }on any failure. Thesignerfield carries the recovered EVM address for EIP-712 inputs and the JWS header'skid(when present) for JWS inputs.