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 0xb5b24a609cb3cc59cf133a00221e2ee7a8e3a1bfe8017c9d7d24111df77fecab. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a546aee-9324-41a2-baf7-7710c8f6422e.json and https://artists.proofprofile.net/proofs/artist/1a546aee-9324-41a2-baf7-7710c8f6422e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Music of Brazil: Moacyr Silva & His Orchestra - Recordings 1956 - 1957
A Flor Do Amor - The Latin Jazz Of Moacyr Silva