Certificate of authenticity · Verification code NPZK8V939G · Version 1
P3t1ts Fru1ts de l’H3rm1t4g3
Tim Berresheim
| Inventory number | TB24/F 469 |
|---|---|
| Year | 2024 |
| Technique | Face-Mount Archival Pigment Print hinter Acrylglas, rückseitig auf Aluminium kaschiert, gerahmt. |
| Dimensions | 100 × 80 cm |
| Edition | unique |
| Issued | 06.11.2026, 07:11 |
Timestamp anchored in Bitcoin, block 974776.
Verification
- …Checksum of the certificate file
- …Artist’s signature
- …Timestamp in Bitcoin
- ·ImageDrop the image file here to compare it with the certificate.
Drop a file here: image, certificate (.json), signature (.sig) or timestamp (.ots). Nothing is uploaded; everything is computed in your browser.
Verification data
- SHA-256 of the certificate file
94ac082dcef71c5294d34535ee43efd5a0fde138ed5b1e3bb3b0c0ade6c22c39- Signature (Ed25519, Base64)
ukrIiV2LDkUxBg3XGsXBiNtHTVOKvMaqY0AKJNQ6UXwzHOO531yUamAlE0L6eCsDEPiTE5190hiFEvzTceriBA==- Artist’s public key
0a347c3cdcf869a45213eb6eea4e65d4f60adb6d1fe7d9be59eace1f04584708- SHA-256 of the main image
8ffa45a06f2b697f7b33ce538893b35a6097f34284cedfd36db28fab360f0f69
How to verify this independently of this page: hash the JSON file with SHA-256; the value must match the checksum above. Verify the signature against that checksum with the public key (Ed25519). Check the .ots file together with the JSON file at opentimestamps.org: this proves since when the checksum has been in the Bitcoin blockchain. The proof depends neither on this address nor on the artist, only on certificate, key and blockchain.