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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190dd6941b0e0261c3db198b527a669fc46a9929c71070a04f695783f30cee00. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f570d48-a700-4bf1-a4bc-fe83f9a406ca.json and https://artists.proofprofile.net/proofs/artist/8f570d48-a700-4bf1-a4bc-fe83f9a406ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musica Latino Americana: 40 Years On Tour 1945-1995 (Live)
Top 30: Best Of Reynaldo Meza y Los Paraguayos - Südamerikanische Top Hits, Vol. 1
Top 30: Best Of Reynaldo Meza y Los Paraguayos - Südamerikanische Top Hits, Vol. 2
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