Reality Check

Cryptographic existence proofs for digital content.

Reality Check generates cryptographic receipts that prove a digital artifact existed at a specific time and has not been altered since. You can create receipts for: Files Text URLs All hashing and receipt generation happens locally in your browser. No data is sent to external servers. Each receipt includes: SHA-256 hash Timestamp Artifact metadata Explicit non-claims What it proves: That a specific hash existed at a specific time That the artifact has not changed since the receipt was created What it does not prove: That the content is true or accurate Who created or authored the artifact The meaning or intent of the content Version 0 stores receipts locally and does not integrate with external timestamp authorities.