Orquesta de Pulso y Pua de la Universidad Complutense de Madrid
{"copyright_id":"0x7ab69321ee6282dc6d172df603bbb84fb5a321bc22ed210bde781ebf76e4c4ab","name":"Orquesta de Pulso y Pua de la Universidad Complutense de Madrid","registered_at":"2026-06-17T15:17:43Z","symbol":"NIM1435886","token_address":"0x3ed7f0d227e3589f6eb5c78febbbac64668a722e","type":"artist","uuid":"8efb02ce-a876-496e-852c-5e43f3116d1e"}
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 0x7ab69321ee6282dc6d172df603bbb84fb5a321bc22ed210bde781ebf76e4c4ab. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8efb02ce-a876-496e-852c-5e43f3116d1e.json and https://artists.proofprofile.net/proofs/artist/8efb02ce-a876-496e-852c-5e43f3116d1e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Enciclopedia de la Música Clásica Vol.13
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 0x772048307c8bd1424e64f2c068c41ca4bae16b8bad359ce880e56eb004876939. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESAAI0196087.