Proof of the hand.

TraceHumanity certifies that a work was made by a person. Experts review the evidence of how you made it. We sign the result with cryptography and record it in a public registry anyone can check.

Albrecht Dürer's engraving Melencolia I: a winged figure sits among a craftsman's tools beneath a magic square, with a rainbow and comet over the sea. Dürer's monogram and the date 1514 are carved into the stone at lower right.
Albrecht Dürer, Melencolia I, 1514. Engraving. The Metropolitan Museum of Art, 43.106.1. His monogram, lower right, told the world the work was his. Move the loupe to look closer.

In 1506, according to Vasari, Dürer went to the Venetian authorities because an engraver was copying his prints, monogram and all.

A mark can be copied. Evidence can’t.

Five centuries on, the problem has turned around. Human work gets flagged as AI-generated, with no real way to appeal, and artists lose listings, income and reputation over a guess.

A signature won’t settle that. Evidence of how the work was made will. TraceHumanity doesn’t guess whether something is AI. We establish, with evidence, that a specific work was made by a human, and give you a record that proves it. Flagged as AI?

Provenance, for work made today.

Rembrandt's pen and ink drawing Satire on Art Criticism: a critic seated on a barrel judges a painting while onlookers watch. Rembrandt's signature is at lower left and small collectors' stamps at lower right.
Rembrandt van Rijn, Satire on Art Criticism, 1644. Pen and brown ink, corrected with white. The Metropolitan Museum of Art, 1975.1.799. His signature sits lower left; the stamps lower right are collectors’ marks, a record of who has owned it.

Museums describe a work with a catalogue entry. A TraceHumanity certificate is one, for work made now, and it can prove itself.

TraceHumanitySpecimen
TraceHumanity seal for certificate TH-2026-SPEC-001: certified human-made, level 3, 2026. File SHA-256 9f2c4e71b0a85d36e1c7f04a92b6d18e53a07c9d2f6b41e8a3c5d09b7e2f6a14. TRACEHUMANITY REGISTRY OF HUMAN-MADE WORK TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026 TH-2026-SPEC-001 9F2C4E71B0A85D36E1C7F04A92B6D18E53A07C9D2F6B41E8A3C5D09B7E2F6A14 HUMAN-MADE L3 2026

Harbour Study IV

Your name, 2026. Photograph.

Certificate
TH-2026-SPEC-001
Level
L3, Device Verified
Evidence
RAW original and device-signed capture, reviewed by a person
Signature
ECDSA P-256 over the certificate number, file hash, level, owner and date
Watermark
Invisible, survives re-compression and re-sharing
Registry
Public and permanent, revocations included
Seal
Drawn from this work’s hash and number. How the seal works

How a work is certified.

  1. 1

    Submit the work and how you made it

    RAW files, layered project files, edit histories, progress videos or a live capture session. Images and video today; audio and text are coming.

  2. 2

    An expert examines the evidence

    A reviewer scores it against a published standard: identity, completeness, consistency, provenance, forensic checks and chain of custody. A decision, not a guess.

  3. 3

    The certificate travels with the work

    Signed, invisibly watermarked, bound to the file with a C2PA manifest, and recorded in the public registry, where anyone can look it up by file, hash or number.

Five levels of assurance.

Each level asks for harder evidence. From L2 upward, the work is certified. Read the standard

  1. L1

    Self Declared

    A signed declaration of authorship. Declared, not certified.

  2. L2

    Evidence Reviewed

    RAW files, edit histories or progress documentation, reviewed by an expert.

  3. L3

    Device Verified

    Camera or device-signed capture plus supporting evidence, with the certificate chain verified.

  4. L4

    Live Verified

    A real-time capture session with challenge codes, checked by two reviewers.

  5. L5

    Institutional

    For newsrooms, agencies and studios: governed workflows, staff verification and random audits.

Check any certificate. You don’t have to trust us.

Every certificate is signed with our published key. Rebuild the signed record, check the signature, and you’re done, with or without our servers. Or look it up here.

2 August 2026

AI now has to declare itself.

Under Article 50 of the EU AI Act, AI-generated and AI-manipulated content must be disclosed and marked. As AI is labelled by law, proof that your work is human carries real weight with buyers, platforms and audiences. What Article 50 means for you

General information, not legal advice. Article 50 obligations fall on providers and deployers of AI systems. TraceHumanity certification is voluntary proof of human authorship.

The Registry of Human-Made Work opens with a founding series of one hundred.

Self-declared records are free, always.