Alberto Castelar, Su Piano Y Su Conjunto Folklórico
{"copyright_id":"0xc2aca726fe2e99fdff7d2ccf6ca4333436d190280100daacd7e20ccde7e37de3","name":"Alberto Castelar, Su Piano Y Su Conjunto Folklórico","registered_at":"2026-06-20T08:39:30Z","symbol":"NIM1568454","token_address":"0x5958d303b2ce9d0c836b84971d3e45f15f453492","type":"artist","uuid":"a8e30eb9-bb65-466a-8d63-b0c12b235b04"}
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 0xc2aca726fe2e99fdff7d2ccf6ca4333436d190280100daacd7e20ccde7e37de3. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8e30eb9-bb65-466a-8d63-b0c12b235b04.json and https://artists.proofprofile.net/proofs/artist/a8e30eb9-bb65-466a-8d63-b0c12b235b04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).