can
Returns whether a signing source is available for the given Ed25519 signer.
Checks the adapter first (adapter-first precedence rule). When the adapter returns true for OZExternalEd25519SignerAdapter.canSignFor, this method returns true without consulting the in-memory registry. Falls back to checking whether an in-memory keypair is registered for (verifierAddress, publicKey).
Return
true when a signing source is available for this signer.
Parameters
verifier
The C-strkey of the Ed25519 verifier contract.
public
The 32-byte Ed25519 public key identifying the signer slot.