{"copyright_id":"0x41a0ead4dc9bcba1fcd2b21a64c4c1bb6a437a92ddc5d39ca6bb3032e4d61546","name":"Daniel Villalobos y Su Grupo Arroz","registered_at":"2026-06-17T18:42:27Z","symbol":"NIM1484776","token_address":"0xaa1d1aa992f80dd53e8c42861ce63502ac7b12b7","type":"artist","uuid":"981ef9e4-a1c2-4ff6-ab55-4e76d60236a1"}
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 0x41a0ead4dc9bcba1fcd2b21a64c4c1bb6a437a92ddc5d39ca6bb3032e4d61546. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/981ef9e4-a1c2-4ff6-ab55-4e76d60236a1.json and https://artists.proofprofile.net/proofs/artist/981ef9e4-a1c2-4ff6-ab55-4e76d60236a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Daniel Villalobos y Su Grupo Arroz, Vol. 21
2 en Uno: Exitos de Daniel Villalobos, Vol. 2
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x390c123fe82266152f237f374b30d3a869e8406223b119892610a5aee16dd993. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX4971404277.
2 en Uno: Exitos de Daniel Villalobos, Vol. 1