Proof of how a photo was made.
Workflow Proofs capture the full edit chain from RAW to final export. Ed25519 signatures, hardware-backed TEE attestation, RFC 3161 timestamps.
No blockchain. No account. Browser verification.
How it works
Export from Lightroom. Select photos and export with the ProofWork plugin. Your images never leave your machine — only a SHA-256 hash is sent.
Signed in hardware. The hash is signed with Ed25519 inside an AWS Nitro Enclave. The private key never exists outside the TEE.
Proof delivered. A .proof.zip is created alongside each export containing the image, signed proof, and verification instructions.
What's in a Workflow Proof
Built for trust
Self-contained proofs
Each ZIP contains everything needed to verify — image, signed proof, and instructions. No account or network required.
TEE-backed signatures
Ed25519 signatures generated inside an AWS Nitro Enclave with hardware attestation.
RFC 3161 timestamps
Independent third-party timestamps prove when each photo was proof-sealed.
Browser verification
Proofs verified entirely in-browser using Web Crypto. Nothing is uploaded — ever.
Your images never leave your machine. The plugin hashes files locally and sends only the SHA-256 digest to the signing enclave. No pixels, no metadata, no filenames are transmitted.