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 0x5e18f99fa43303640c3b8efd279112b62e1a8bebdc758fa282dea80ce01336c0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfae1496-3324-45b0-b45e-58c977331cf2.json and https://artists.proofprofile.net/proofs/artist/dfae1496-3324-45b0-b45e-58c977331cf2.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 0xc9fd14ab198fe7e64dddcad7ccd761a69cd486673b849f6c5eacc26b4e403969. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES71G1513029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c22e87f3cf968a8e9aa793db2cf6fa6fab72b3084a096629ea6300922181428. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ES71G1513028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05468cb1afeff726f7132e17bdf925f7a5c0f40a039ac0243e83be40081ef2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES71G1513026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a56a69facde228dc4257042ef8fd645562d8d16354b30a12fe35f6cf0a27acc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES71G1513033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05553e2793b98746a61cdef1a0e6a239bd1ddbcd1bb53c9485b772747b81c19f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G1513035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab3af5ad32ffdd7d610b28f36caf9521a3333c10f477e576f20fb6f6845efa6. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:44:01Z), 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/ES71G1513036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bf0712125009e5983d94d6dbb162da04da38f5ddb5da5c6a8641677fe1e0f3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ES71G1513031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df94c07736c753617b4f228be9d5d512edd0395430faf1fb02821728b0c9f85. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G1513032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3a1a43c7ed56c5f4495b72763ee2cb6ff47d2778a89cd4b447d71435c1c7a1. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:27:52Z), 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/ES71G1513034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb224340e21c2dee86806831789360f44a752b670ddaa13ada2c20ad8a36c60a7. 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/CUA0B2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e61bae31cda77ec424b2e31249af12d2070458cf51b17169caae58799f2b6d. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:53:08Z), 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/CUA0B2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d046f9d5c49c479873887a223c56744e542b3fb0837c8da2e0ed44e0931d384. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CUA0B2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0baad17c5e048b785b109f901217951c95d397c9103501b8729929a90a95f19e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CUA0B2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e702e08f06ea7a43095bffbfec15d3cc396431c66187a234b712d4def85c2ff. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CUA0B2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e325b208980ec851c135749b41473ab83efef3ebedda6d8b0f3ed672ce081dc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CUA0B2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1abea74053922bf36d80ed3d413243e9803907514595a7b8f6e97f52d18041. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/CUA0B2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaeac72b4651e3bdd769332eee45d7dde0aabcef4c1c01aae6d6c41625a0a73. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CUA0B2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6961d0b79286404fa5cd4fa353b90cc9046e9f2543de79d1916a19d04abe534a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:33Z), 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/CUA0B2000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f1f6ca89965a3b4de2d4fe7f97aa8ef4ea551ad6e695435589d9e450f1c469. 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/QZNJY2404464.
I Dance Cuban Salsa 2017 (Salsa y Timba Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2d4883f2c889dcaf928fbd1bc3e8d1365378e897d1331b0ead1b83a8d75a2a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ITAC21700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a8a1ab786a69c2a705a8d00a6ea15c2f42f1a73cd1bf2ee593ec72028d6fd2. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/ITAC21800003.
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