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 0x68dff83a40106808e33f211ea05f2e37b5a59a2fd8cae11bcb9ae7ecff08ca4a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48a79552-144a-4707-afb0-0541a8e31831.json and https://artists.proofprofile.net/proofs/artist/48a79552-144a-4707-afb0-0541a8e31831.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005d8e3d92c9634d2f7e9cc8e7b2b431602f7effebf8e6255a71bf2f622a48eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL1LU2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d6fcaf0e75955d5531a3103addea90d674602e8dd2f927a37198af068f3f9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL1LU2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cfc7c3028d37e9ea870cdc112863d78b70748a85f0d6d6c681c4c76c6256b6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL1LU2000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701dd059113c354b6af845239f5be94470bfedb0a85b7c00f1808effcac45f9e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL1LU2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5c490de589aacba1e4539cb444456006b217093d774898f53f580a777e49ac. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL1LU2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d1c7d3e26cee19f3c101806d9d8688c50a5ab24585eea97c6c5abc213f9735. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL1LU2300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e54dcdb4e15e40afc66a45a7fa55e3e79f1ce141670e18c6e05c926414feca2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL1LU2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b787ed91b6eecb3e11907dd1b63029317a47cf7d90ef9cbff784c1b6671a01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2292296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda033fa772a2daddebf75abbca3f5a018040adc1bfa47aced769cac9c608f76d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL1LU2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636ab801d2f24efcd124acab18cdf22d8aa4c31a02a181ee4edf615df1ffe291. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NL1LU2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e706a15c9f4c5c6d44a7098f7ab9698d2e56ce4ae71c65ca7b09c30d7ba8b9b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL1LU2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87900084a43bab6fbe432c9c73abd474e6aac8f2c1c48d47d275b618e0d0ffd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NL1LU2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c727e9a4938492b4c2d703add5dce3ec770e30bd604f07af98913ac0db75c02. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL1LU2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda033fa772a2daddebf75abbca3f5a018040adc1bfa47aced769cac9c608f76d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL1LU2100071.
Niet Jezelf (feat. JM Fuego and Peso El Connect)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfdba99dad7ca51b51d26fc8512b0682f9ad9bad4c0fa2c8db29d88b466fd55. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL1LU2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fef4d48c9389fa57f615673969e3d9e2b6ef4e376aac75c40a5ca15841b3a5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:56:27Z), 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/NL1LU2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675b2180834a5d08d7d0f17b55fb6364d0acba30b4ee9a18a1fdc4b423516d18. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL1LU2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86c43b798ff5e3d1065ec8d67d76fa827f8a6108db62dc3964a74f98a366acb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL1LU2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015a691fc88ec920f2095f4d6234f77f985d5e445f23e013e07ca1a497bf57f1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL1LU2500010.