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 0x7e85244b0f9ed4d0862a0e5047a07727eafa73527c6265f2b14f978fe2c6bb03. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/150dd4b4-0706-4d51-a06e-c156e2d3937b.json and https://artists.proofprofile.net/proofs/artist/150dd4b4-0706-4d51-a06e-c156e2d3937b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
決定盤!!「サム・テイラー 映画音楽」ベスト
決定盤!!「サム・テイラー ポピュラー」ベスト (インスト)
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