1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb045fbf35b72d7486df9c6b3a1b0e45ec04323c3a4420160bb4b7571c715c636. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9a29755-5d3d-403a-9948-49824dcc7148.json and https://artists.proofprofile.net/proofs/artist/d9a29755-5d3d-403a-9948-49824dcc7148.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Contemporary Vocalist Two Vol. 3 Strength and Stamina
Contemporary Vocalist Two, Vol. 2 Precision and Flexibility
Contemporary Vocalist One, Vol. 2 Range and Control
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Contemporary Vocalist One, Vol. 3 Tone and Power
Contemporary Vocalist Two Vol. 1 Eliminating the Break