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 0xab2789fc6a66b79b3bc846fee068a6beeea4ec44af044e83c40ac4a76f5d37e7. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1b294cc-2022-44fe-9dea-4d18be3882f9.json and https://artists.proofprofile.net/proofs/artist/f1b294cc-2022-44fe-9dea-4d18be3882f9.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 0xf20affc0932454fd2505064416245b4ad3308f7f3eeea75a08b91da69fadcf5c. 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/DEZN82475910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8589983aaa03e573f4f917e5f44c0138acfbaef4e80fb1ff78e88c528646d95a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEZN82475905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36da0fa17e40cfde7ad043f1d2017ccc2eb1ab64a07e93258921f590b34c20e3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:40Z), 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/DEZN82475903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e7e65e565622f084b482f1fe7583a0ce2d7f0efd3c3148b3c85ef744a3cce7. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEZN82475909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5664bb153357908a04635079d3da709aa44c287dbe835d7c9330f2d7bd91be82. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZN82475889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5ec126451faf782bc8fb70ee8ce0b650cc1ee8d0fed4476cf5750a994fe97b. 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/DEZN82475885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa0e0b2e6b9d3739f8c0ab84a64a4f45a7c2831114f9f79d1c020d5fad7355a. 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/DEZN82475904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197b679d9bf8f0a0fa94285d07cc709b9d96bc3b7431b573f1f851b37640b6e4. 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/DEZN82475901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058efa606e12996978ffa9a7cafcd0036e69777f9b9814d702b55c2e8c895ecb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZN82475900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006af03ffb15737a838382d5c1f1fdc83196e10a1960e6864f760c6275703f99. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEZN82475899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01a8fc797a79ca71e9a2e8adc8f6886ff08a80d0b3bcd8fd674c9f96a1cf8b3. 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/DEZN82475908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1543b2b51ad992cd425751a549c0310a49246c347d18fc5ac9eccfdd045ad5. 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/DEZN82475888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5a417a33a014caa27c289bcdb599634ab17403f5f430a131b05793092cdf47. 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/DEZN82475906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0b3c064bfd112d5bc7c4b6cebfa70a9329448662a8f015d52d6798d2a4eef. 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/DEZN82475890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b62c93a4c7327ad0cfe1a50f6cfcd130c3e8067d29a4df6b8e78a6de6ec15e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZN82475902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054e28a8f31eee232b28a40871b79fd3e36d638ed5100377e4d135ce12716fc7. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEZN82475907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081c124391485bffc61ede914282b522ed4c06f999f817b4961dee2e3d4cc13e. 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/DEZN82476306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2314fe80a10a857a8d24e7e91098a8ccccf499a078e4ea95b951382b35be2c2. 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/DEZN82476307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f49fec614c442a1c0b4f7e365eeda8e1e90405d7b336b353e6e5020d32df42. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/DEZN82476309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec5ff16df014971d109139e4b8ffdc72c21b79b2c0c9753bd3cf6205b98cd5a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZN82476308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60063d1fe864c56da0f228c6166b3cc3417c7c9a0ac4e9e0c6e19037f9809f1. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEZN82476300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a44c887f29817980d39b3d270a3d8101142d3c22fad2c3e4a8ebe5cc16a0d83. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZN82476305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa527595f7a575c1da8d43d64057b07a43c487dfcc40838cb9a75bfeeb10c2d92. 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/DEZN82476311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08d1812c881557c7c50b62df4711596c2c735e34d197956bdf40f2b00e4561c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:03Z), 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/DEZN82476310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30862ba0f8b0a6d93c9650ef518af254f84c46dbce098495a5094fbd69676a31. 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/DEZN82476304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d8568bf4a281c0f86696e74952015197221de8eaec281f565f2fd5a5de86ae. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEZN82476302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de490ac7cde9fa320a202480439d36955d5bdb6f02897037ac6716fc8ab2972. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEZN82476303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe4770bcf7100c8b24f2c52ce89d3168c6fab5fe1986be330ccbcccd68f23ad. 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/DEZN82476299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc792f8255212424a2ea6a21194fa1fa0df6cf36b7181465aa4f3a40f2ec04208. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZN82476301.