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 0xce21794929a72fbd923ff2d388569d1518dd4f2ed1ae7b5eec73b93012e2c6ee. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbc77832-3f9d-4f87-8e3a-35b9bb72c019.json and https://artists.proofprofile.net/proofs/artist/cbc77832-3f9d-4f87-8e3a-35b9bb72c019.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Eden, au cœur du désert rouge (Musique originale du film)
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