Proof of timestamp

Verifying a proof of timestamp using the Woleet API is straightforward: the API takes care of verifying that the proof receipt is valid and correctly anchored in a Bitcoin transaction, so you just need to check that the SHA256 hash of the file matches the proof receipt’s hash property.

Proof of seal

Verifying a proof of seal using the Woleet API is also straightforward: the API takes care of verifying that the proof receipt is valid and correctly anchored in a Bitcoin transaction, then verifies the signature, and checks that the sealing organization's identity server controls the signing key and acknowledges the seal identity. You just need to check that the SHA256 hash of the file matches the proof receipt’s signedHash property.

Proof of signature

Verifying a proof of signature using the Woleet API is also straightforward: the API takes care of verifying that the proof receipt is valid and correctly anchored in a Bitcoin transaction, then verifies the signature, and checks that the trusted identity provider's identity server acknowledges the signer identity. You just need to check that the SHA256 hash of the file matches the proof receipt’s signedHash property.

The Woleet API can also be used to verify any Chainpoint 1 or 2 proof receipt, including those created by other providers.

Woleet also provides an open source JavaScript library for web clients implementing the full verification process without the help of the Woleet API.