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 0x686a44ee6033414355df368e69d1684589db3b0ade3a2ac5395ef3bd0ecfded8. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/939447ce-7098-4c01-a04e-3ceea50a7cb5.json and https://artists.proofprofile.net/proofs/artist/939447ce-7098-4c01-a04e-3ceea50a7cb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Around the Fire - Daniele Principato Remix