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 0x2e15f888b9b3152f6ed3dbc9a3bb8f026abd43918724931d6cf4752e78980c76. 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/685b4a58-da5d-4f58-8e97-649ce04cc86d.json and https://artists.proofprofile.net/proofs/artist/685b4a58-da5d-4f58-8e97-649ce04cc86d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ｇ線上のアリア (「管弦楽組曲第3番 ニ長調 BWV 1068 - 第2曲 エール」より)