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 0x90a0aca08e3b4bbc95cf591855a6796f5b08b9f9769ec4cd685ed500ff1d13ce. 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/62579e44-58b2-40e6-bfd7-0e378f3d04b5.json and https://artists.proofprofile.net/proofs/artist/62579e44-58b2-40e6-bfd7-0e378f3d04b5.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 0x7af07b8ee554c31daaf7f19b23b2ac65a2de238f08b3711e6e9670a7d14ff500. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZNWT2378280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd0428a1c6b60e83a3df5e4ef93ba768c411c803c2df2f5c153f5fa3453de05. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWT2378282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc44fda8843076d81856930c137b7cfe27a6e7fd361dd057387776862902c3a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWT2378283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcb889053b29e14e57da8ef59d7b7238ef4754e4785674e7a650ac34f49547b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:49Z), 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/QZNWT2378286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacac2249303ce6f314b2df10aed77795b2733351b1b07e1adea300afd752d962. 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/QZPLS2332700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d36d857ca9a446f2587206f4c76535c355f36fab0fd3a63442c0c006f548e23. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZPLS2332701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052529fd10e26e342f4172279d1d57238f72563498ef9f6c82cb69cb9894b887. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZPLS2332705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bbd86993a3d3657789ae0985839ccf4febce765d36ab9057ddc208bbd53a16. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPLS2332710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc888dd441165fbbfba64d12d4b68f9043e6ae18cddd0cba4291b1ce3475552b3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZPLS2332711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f362d8e26cd9bec4fcef6fc96121a7d64bcf2faa11740948ebc8dcecec6acc6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPLS2332716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d71e0b72eae15e50eb54049e047a36d5e5281a463c343112b63423e3f058bc6. 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/QZPLS2332721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf72fe440b8dc7f661d8f0b4b40222b6b1e0a99d5df2a5f1fb471711cf111a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZPLS2332723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0604a401912fdd485121f02129f6815b8313f06404fc1b965d729889c0b11ea0. 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/QZTAY2344889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f95a5c7b7800cae92619b24a2f13a28f2e6e45cd73bfb4ab848f99c70ef5a08. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB62306380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0ed388bc33de3604f3a4f24357539a44fe7cbc32b4d40604c83d3b5731a470. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB62328955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae514a5f8d6d9450528b0f7815ea6fc1e36fedac3701386c14bfeaf74446c7e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBD2329652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ec6a291c45cf8c464f0087ffa753d560dfff4418a36fdc3227bd6520fd64ef. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZFYY2429774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe3952e7d83920f261eb51f61829e32b3b3a843fbe207b564eb3f8485e80318. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:58Z), 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/QZFYY2429777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4aab13e05c5a270899edeac1b6f36e7adda8b18e566ca0402f06d254049d56. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:38:28Z), 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/QZFYY2429780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8a22a48fc2e1e45646f72c1b85e571ef7ef2002ffbe4b3b01fc90a4390eb67. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZFYY2429781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531778018c08a2ffa1e53f8634429039e132cbb245f0825afebef6a57745a43b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZFYY2429783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684c77735c1a6ab1020998206f23600ca634dc0b733f6d161027a0c39f456bb5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN72427619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59e9b525a0832ba64304b0566189087d4141eb72b9057f995bf1bb09fda2933. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTBD2461205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20df3e1502aa6eea38fdc9199950d66c1cdf5ed63a50ae9d9812f692dd7abb6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTBD2461206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e155875bea9bc1a2e13b51cb3eda970d9ca893a65ef2c9fc2f0435bb28efd4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBD2461207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab067eeb7699f5732ca5405148d1f4b9d9164654b78efba455c2a0c37d2ec16. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZTBD2461208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42103b47ddb83dd3fc10806017e3252a9c77619a9ab91cb94bd65cd1b5cceae6. 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/QZTBD2461210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcf7c40658a3b37e7d2bf78a75dddaa43c905684a3827001b77c45436a8290a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:41Z), 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/QZZ7V2496326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81afdc5a237eaa8d8019c960baed649f539d5f52dbfe6e9b6377d207d1fdbdc5. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZMEM2585681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20441caca7204c0d88feb9c589c19b41cc55608c914fdfdfcf0585a0b5f8d085. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:23Z), 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/QZMEM2585682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6c339774b63778ff2dd62c0fdc453127a6cb09c33a25c62f7ad8f5e15e24ce. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZMEM2585683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd1c7514c2ec0aab8c40c575a8f8bffb260617882a425e67414a6304e10e0c1. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZMEM2585684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f5464950b5ad75d1a7e2a43bf25a334dcb4aa472614a7910a97bc5a92d7e6b. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZMEM2585685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317a0e240beb869e47fb16ae7d84886eb267291e9e1b485a36f98be1256d8a2b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEM2585686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4e534a80e3e51b9356775bc56d45914d82b74c5e1949da5a5152c8cefc387. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:28:22Z), 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/QZMEM2585687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0f3b8fc0821daf945a4becf77fcd8ed9645269a77b9740b39ec43c278d04a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEM2585688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b643f93982fafa63a4b27f04072d74ef035823d1bcc342cb37ad73fcc5b5202. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZMEM2585689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd67772b75d551fc33dccbf82b80e1719f64feb63336432d94914e40c7b7abb3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEM2585690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac99be59cf77c060d624f19519872f288bc6c856e4dbc66b8b857bd275bf34. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEM2585691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6472d437c0c8b37697704d3b72377ac2bbdefd98c4fc24f5d9a3835ef3403d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:17Z), 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/QZTAX2572165.