Alan Estrada, Alejandro de la Madrid, Federico di Lorenzo, Sergio Enrique Catalán
{"copyright_id":"0xdaefb32f52d70a980b669f777c08cfe4ad1d3febf43ec301882ea288ccf61684","name":"Alan Estrada, Alejandro de la Madrid, Federico di Lorenzo, Sergio Enrique Catalán","registered_at":"2026-06-20T08:31:34Z","symbol":"NIM1565990","token_address":"0x997325d65059ea562a2eb804f5f25833ba2c9ba8","type":"artist","uuid":"a7c81a02-534c-4ecf-885e-ee8a6a7c87ad"}
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 0xdaefb32f52d70a980b669f777c08cfe4ad1d3febf43ec301882ea288ccf61684. 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/a7c81a02-534c-4ecf-885e-ee8a6a7c87ad.json and https://artists.proofprofile.net/proofs/artist/a7c81a02-534c-4ecf-885e-ee8a6a7c87ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).