Astor Piazzolla y su Bandoneón y su Orquesta de Cuerdas
{"copyright_id":"0x758eba1b55012fb588d16db6ad1994f0c182c310ba6c898ffb62ca2ec4f79e6e","name":"Astor Piazzolla y su Bandoneón y su Orquesta de Cuerdas","registered_at":"2026-06-21T07:43:17Z","symbol":"NIM1865020","token_address":"0xa174c53999ede5b6b38bd8e722f9443302fd4d85","type":"artist","uuid":"e3a0a566-1c5f-400d-903d-a7978dadea5a"}
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 0x758eba1b55012fb588d16db6ad1994f0c182c310ba6c898ffb62ca2ec4f79e6e. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3a0a566-1c5f-400d-903d-a7978dadea5a.json and https://artists.proofprofile.net/proofs/artist/e3a0a566-1c5f-400d-903d-a7978dadea5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sinfonia De Tango - The Beginning of Tango Nuevo, Vol. 1 (The First Ever Tango Nuevo Recordings of Astor Piazzolla, 1955 In Paris.)