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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b31a043284fdb528e372d2695639f8ff4eff014b7bd766a70b38ec7cf8ce1e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cb250a0-93f3-4047-9450-7a1534de00e2.json and https://artists.proofprofile.net/proofs/artist/4cb250a0-93f3-4047-9450-7a1534de00e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pamplona en Fiestas (Remasterizado 2022)
Los Chimberos (1984) [Remasterizado 2021]
Lo Mejor de Los Chimberos - Aste Nagusia
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221f3670957eaae755174580c484158fab36b6b82772989b87559b9ff2cd7b43. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5301252550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df4e9e55f66dcef73e37db503af6dcfbf68932fdfb43b9d2e3644bfa276e59d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:01Z), 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/ES5301252554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8cf26b98977ea3df7dd6aa54849a38bcba97091d7385ce94f9fc9b248d8b36. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ES5301252556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6eadc4fb0db43419bc382fc8f918fdac9442db27189faa9a863af2d766433d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:34Z), 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/ES5301252558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be2481e9b143c7ed5fbf38389f1eb46b7a5adb7ecb43c0b8ec7388bd53266cb. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ESA031516978.
Himno del Athletic Club de Bilbao - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5be4959b1212f0736af940d1476d9450fe9b0d7a93ec8f2f309e13ca693d52c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVU51811196.
Tengo una novia en Santurce (Remastered)