OpenTimestamps: create a proof
Computes the SHA-256 of the text locally and sends only the 32-byte hash to an OpenTimestamps calendar. The returned receipt only proves submission: the time is NOT proven until a Bitcoin attestation exists.
Computes the SHA-256 of the text locally and sends only the 32-byte hash to an OpenTimestamps calendar. The returned receipt only proves submission: the time is NOT proven until a Bitcoin attestation exists.