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 0xdbf9ad6bba1ad7c8a7b1fae947ad5829039b71c12b05d2a59b0607b05a3b035b. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12746e78-439d-4e6f-9e52-f41a813a733d.json and https://artists.proofprofile.net/proofs/artist/12746e78-439d-4e6f-9e52-f41a813a733d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dagabaaz (Original Motion Picture Soundtrack)
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Mahabir Krishna (Original Motion Picture Soundtrack)
Celebrating The 150Th Birth Anniversary Of Dwijendralal Roy,Vol. 1
Celebrating The 150th Birth Anniversary of Dwijendralal Roy, Vol. 1
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