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 0x9d5608bc46d2c416db020719791d4f8ddec285d89afb17841fccaad8617adcac. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d03faa54-c076-401d-b70c-558299264025.json and https://artists.proofprofile.net/proofs/artist/d03faa54-c076-401d-b70c-558299264025.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
50 Tunes of Jazz from Venus Records - これがヴィーナス・ジャズだ！
ピーシズ・オブ・ビーナス DJ 大塚広子
須永辰緒の夜ジャズ-Jazz Allnighters- digs Venus Jazz Opus 5