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 0x6db86508f0f87a9210d2277d0429b283644d38349fe0da0bdc707a9dd93f627c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40f58046-9fe7-42f2-bbd4-0aee1b1c8e00.json and https://artists.proofprofile.net/proofs/artist/40f58046-9fe7-42f2-bbd4-0aee1b1c8e00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
MI VIEJO SAN JUAN--From Puerto Rico with Love vol 2
PERFUME DE GARDENIA--From Puerto Rico with Love vol 3