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 0x6f85695dfed1b806b94dbda54bf0d738173c3ce384e78a79eb3e51f71814ad8e. Chain 2 (Bitcoin): anchored in block 954039 (2026-06-17T03:00:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e30ffa7-6bcb-4ac0-a210-c0254323df12.json and https://artists.proofprofile.net/proofs/artist/3e30ffa7-6bcb-4ac0-a210-c0254323df12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yasmina (feat. Missoum et son orchestre) [Mono Version]
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