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 0xb06e3469400da15e86eb2150145eb430fe3c03e1bcee55eb4c30b45c8f766e32. 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/a0e9c1ee-5849-4a4a-8db5-cb88310faf37.json and https://artists.proofprofile.net/proofs/artist/a0e9c1ee-5849-4a4a-8db5-cb88310faf37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Interlude #4 (Two Hot Dogs & a Strawberry Soda)
The Barcelona Sessions. Sketches Set 7 Segment 1 (Rev)