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 0xb6c64d34aca0333fba4f712d08ff0cca1fa000554a80bb4f8d17f9d33cdc529e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f1d6987-0821-4ceb-a909-45450abc91c2.json and https://artists.proofprofile.net/proofs/artist/4f1d6987-0821-4ceb-a909-45450abc91c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x71437e16af3d4a95ff58341d7b4430a0390444795a2ed2508740c1caa1ebd6a2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMYW20400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7521ad698e93b730533516b9a168c7be323ad86117ea03070424b0d8348aa19d. 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/QMYW20400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961a2d85c0c1d911cffc65ce03820b022362158b18a2978add14a25ae8444586. 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/QMYW20400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1ffd8cae88dc857d391a84e6e880451153888d27bb6a70d18cc99bd9466ea4. 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/QMYW20400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1a027d2c9a93ae183c3a3e164168373403aa1d2e73b64c39eff6bb0a63b677. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMYW20400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542e3daa2b67826f3ae1388aa13b50b32fb5dbfa3b8849dfe395bd29d8d158da. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:56:37Z), 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/QMYW20300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e3563b7222e763d912ed6c15439cc676b842211106d060dd1331941f4e12a6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMYW20400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337b7e7ae57ddee2f9ef8e63b54cd9615c4544f22ea0c5be58d25de1d3f3f9fa. 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/QMYW20300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f2288b8bb94c9f81b618dc3bfa2450264749ae812092689a83f89b0f7356f6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:53:15Z), 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/QMYW20400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26a6fc7acedbe54862d94692f9ac12a19ec854adc49bfa4eebdefde020d5b46. 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/QMYW20400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71437e16af3d4a95ff58341d7b4430a0390444795a2ed2508740c1caa1ebd6a2. 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/QMYW20400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4802b33f3a56418d7050b49184904d3eada43ab339f66aac3a2f414fa8cf5aad. 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/QMYW20400004.
Los Antares de Felipe “La Voz” Rodríguez Cantan de Valdespí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580adad7e4804621e1661fa61fe2741c82b97b734db9e610753074f794d40d58. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USMRE0811507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf52aff586c0af462794611039cf24b58553c5d67bad038d0017e872f7b1eef. 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/USMRE0811509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc70d7667064f59437f016e8e59e5b9aa0ede2a8b8d2f489645f56cdf7ecbf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USMRE0811510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac76c2cd810a89362c22c6479ae921fa7888c2490d86565bb29c983680dabe9. 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/QMYW20300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc925279a268de37319c77875c11adcbe337ff9abae5d3a2b2df898f10f2360. 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/QMYW20400020.
Felicidades con Felipe "La Voz" Rodriguez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5608a23e9def0c99cf88452e4c52dc6fb37bb36241705200e5df1e7146e0327e. 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/USZZR1101396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd483bd6f67532ba1700b55393afaad732c53e2ce274d5c80e062a9cf4ed5b4. 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/USDBB0602614.
Los Grandes Exitos De Felipe 16 Exitos Originales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820159623314ea85b5f664505eb3cac179170e437b7099748e4a7ac39b98ae87. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USZZR0811135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582be4afdc39cb7f4ebd64c264e98f23706d81bc969dbaecd91ae0ff929b8d4f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USZZR0811136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6793d5ca3c696223a040eca0fb892d1762b7bb807386dcc975ae37ca2f3e8975. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USZZR0811137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08afdff5519e176b5cd16d023472329a58a9fffbe4e83bfd25a39e1fdbd635b2. 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/USZZR0811138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf527ac5aa67fa94e4d97017cdbe2355184e5df7aa438478b0aa4ae4f522794e9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USZZR0811139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306ca7aba568eafd47682e0b4cb5a340dfd14e892f7ed50dbb307804b724de2f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USZZR0811140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4810c4094eb0c3d4950af322ce490f4d2c810d4354baa0df4f0df69d5e765d8d. 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/USZZR0811143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25fa6bd8e221fc74e998646a37a2233547515abfcb26b4f3a42b06ba44c7ac9. 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/USZZR0811144.