EIP-191 proof
How MetaMask message signing works
MetaMask can sign a plain text message using the private key behind your Ethereum address. The signature proves control of the wallet for that exact message without moving funds or exposing the private key.
Verify afterwards
From signature to verification
Once a message is signed, the address, message, and signature can be verified. Accredifi uses this same proof-of-control primitive inside institution-grade verification workflows for onboarding, lending, compliance, and ongoing review.
Verify the signature afterwards
Use the public verifier for a local ETH signature check, or explore Accredifi infrastructure for institution workflows.