1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797dd7bcc38c47d441c1d25e0116d8dcf860c4b4e798327b173f2b8be3e44f18. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f627318-b05f-488c-87ad-30b199471ebd.json and https://artists.proofprofile.net/proofs/artist/5f627318-b05f-488c-87ad-30b199471ebd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Maintenant qu'il fait tout le temps nuit sur toi
Les métamorphoses de Mister Chat, vol. 1 – Dionysos
La tribu de Pierre Perret au café du canal
De la musique plein les yeux (Bande originale exposition - Aurel : De la musique plein les yeux)