{"copyright_id":"0x70e4cf5c76234614afa2b9a0ca13dcb4b67c21acb14ccc14ebb71026a5ec8fbc","name":"Banda de Música Mª Stma. de la Victoria","registered_at":"2026-06-15T18:27:50Z","symbol":"NIM0794135","token_address":"0xb2bd5d4d7ba7e431eafaef4771853ac9b6daefb4","type":"artist","uuid":"0df487fc-1178-4fd7-be95-3429d7b47dab"}
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 0x70e4cf5c76234614afa2b9a0ca13dcb4b67c21acb14ccc14ebb71026a5ec8fbc. Chain 2 (Bitcoin): anchored in block 953889 (2026-06-16T04:57:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0df487fc-1178-4fd7-be95-3429d7b47dab.json and https://artists.proofprofile.net/proofs/artist/0df487fc-1178-4fd7-be95-3429d7b47dab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Homenaje de la Música de las Cigarreras a Su Hermandad
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 0x581bb715e1c27c4227ea5b0519edb0c8bb32cd1f0db2d70a2407d38ed80d346c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ES5351303313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8036fe2c5505e774a217fc442e5863f23fa9b9ebf848de5ff327b6f32fa35d7b. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ES5351303315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68749290675184b50cf658fae7bb7b1636ff79c808cd852ab40b06c112d426a0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ES5351303316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837d62a3dcf9d753ca20c0720fcfe7fadbd5a7843a03f73c068a8e239719d779. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ES5351303317.