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 0x888e7d7b29378b4ff82022a05e6720f6e3d97065239090ab28d5985923b72512. 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/18806794-a142-4878-acf0-bc6c6141ca0c.json and https://artists.proofprofile.net/proofs/artist/18806794-a142-4878-acf0-bc6c6141ca0c.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 0x83e3b71ade6a434411153c74500749a86f60b3adb6b450af66869f1ce0b8a84d. 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/FRX991591841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ce55f181e37fb767baa3c638bd393f70d1361b4d6462b13dff15ac316265e8. 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/FRX991591842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40726b001e985b6fdd51a427dff0f039e5fef3e293ecaf9dca07de2a8f41bc91. 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/FRX991591843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9854680eccc6122dab2ad3b9dbe87c52d44b6ce196bf9b18f828880a81600562. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX991591844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddce18cf619ba619a861104bdc56987354c836772ec60dd2f3867a1c7075c91. 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/FRX991591849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80282d5350ebba0381610d5f896fc2738c3443d046968f211697e552d754fc16. 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/FRX991591852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce523750a6e227aa8ecea56eeecfc3d07cd037cea45031c8c3a97f05c1f3739. 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/FRX991591856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b2828e65a8b811a831f158b5f928254d56b4f600cb1041ca3ea0077ef9ed88. 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/MXF366814294.
20 Grandes Éxitos de la Nueva Ola Peruana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a58f59c19e955cf1376ddd11d777de01b92b1e860736214b9bf68c62b7790ef. 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/ESA012210300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078714dd7cdfb016522de6119c4d94796d96c707c7c9fac31216e674cf904ed9. 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/ESA012210301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7935e1262431f5f7c753ea907fd54379499cb2d42b041b015f2d5ea19a5ac8. 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/ESA012210302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bbd58f77d8b88a7e1c2398acabb06f4137186b42c6519eaa295d13e6e54c11. 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/ESA012210303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d3f1264a62841ad7e90fe532ac4accd478f6448f94b6b6753c1a666020845f. 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/ESA012210304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b2087e73ee9cbab14e431f78b96dd91c5372d845ce3a8c4c187fe2a54220f0. 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/ESA012210305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b5e79dad69d8f441e60532a787c96cd49453fd6e808fec518506497ecaa354. 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/ESA012210306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d2ccd75057f29879b1d2683da7085dbec104465314d2a15278460762bc373c. 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/ESA012210320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea3c5e2c78498a11b301746e7e24273889a02e6c7b1743c3374ba222578ac4. 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/ESA012210321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5b33fc2ca890e94aaa5e912bae92143548a7c224113f04f5e48c579bc5468f. 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/ESA012210322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feaa23f6d86087af2f5f2e1c8ee5f3f456eb58b90ff1fc53161855cb51b69fe. 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/ESA012210323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59509d43df0d2e355f291ee9eba01c23390aa1e38738e8bca0e6c1ab41fa71ef. 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/ESA012210347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3ddb1aa62e58456317b716f8e6be7be99a2eaf93f188f446039fcedcbf43bc. 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/ESA012210348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8407410d5fbba1e886242a168c1a757f941d12e767df8f1cb2d6fd385bc097c9. 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/ESA012210349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2c9df0db252b17b4e31738256165b6fd2d881889145fd8a1fd7c246124721b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:41:33Z), 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/ESA012210350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0425a96c127500a3939ac17d65ca8badc43ba7c93d4c094dca7da0e6916f04b4. 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/ESA012210351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4f089b04a235f3af659a4c905cf8771b2a615972391992c0b39b3261ca4901. 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/ESA012210352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63b7f150f3a5953467894ebe600cbcc84b14b7f4d1f52a2ba988a95397ac2f. 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/ESA012210353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546e734401b89097d6b7f071921590a40601d0b3b958fee3e582543db0dfdbaa. 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/ESA012210354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfc8ecdd6310385b4870ffb2bf21b81de938fb84e80bef5eb0e6a75b811d5b2. 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/ESA012210355.