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 0x4c539ee5b5147da7c20f32dcf8f4d02a8c82ede631b8ab204732c0d5ab433d7c. 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/d92ae4bc-7d70-49a3-a0bc-eca1f1a3ae96.json and https://artists.proofprofile.net/proofs/artist/d92ae4bc-7d70-49a3-a0bc-eca1f1a3ae96.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 0xbf1c984460d75bae2baddfa2469827fc14f8ba5c3b3382629fa97138e77db777. 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/QZFZ32423466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefcba74f2613441096f7985091e3fcf970dd8fa12fefca4b84fd990b9b87389. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZK6M2472116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fa113b7e71a92c007d448ba2ee2f8a655a4696088fbc18640711a15f3b9b9c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZK6J2416827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3a1c627183d84ed79bf7e05d07763cf278249f28d15a304ce7f7264e47179c. 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/QZK6F2476092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ae8390f88b12864a52a2eba9dc82c20a023e4843ed55d99a0256a11250b38. 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/QZK6F2476093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13923ffa006f4df7ec4b993d82942d3c01aaf2e8a5ca971d72c272b7ecfe474. 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/QZK6F2476094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dedaae4deaa8eae04c20291a24297cca5ed36ef6ee9ef17fb284893887080fe. 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/QZK6F2476095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3a1c627183d84ed79bf7e05d07763cf278249f28d15a304ce7f7264e47179c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:54Z), 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/QZK6F2476092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ae8390f88b12864a52a2eba9dc82c20a023e4843ed55d99a0256a11250b38. 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/QZK6F2476093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13923ffa006f4df7ec4b993d82942d3c01aaf2e8a5ca971d72c272b7ecfe474. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZK6F2476094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dedaae4deaa8eae04c20291a24297cca5ed36ef6ee9ef17fb284893887080fe. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZK6F2476095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6430ff63ba5282cee45f17316360772f68bc21ae9ee18ac34fa2ff5621fa05. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZTB62414705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d6eb77f22730d4c8e1b550862f41f8e501bbf39762568d629bdea1f645bbcb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:07Z), 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/QZTBF2420456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f35006d58709c5d34058a417e0aaeea6751217f704297138f525aff3c9c3d4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN42287439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffdbb6aa91bc42f741a5db84b8dad14a6769adbdb1e2d54bb082a251ad986d8. 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/QZTBA2395281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad8e97c93df4b11338747b1df5372c8964f6d5f2de23336810f74479326e6e6. 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/QZTBB2304775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf827c8ccb95b1f2a65d048193b911bebf7a152b3c2cdda2a8ea3c15eedaa76b2. 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/QZTBA2395283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58fc773c249913ed916ac8833d5e248319665197c7b06488c3f429a1ebc1878. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:05:57Z), 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/QZTBB2304780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6803ff71ba759b2a618302a3ebe9b9d15aafd6c738029751ea0b745de3b8d46c. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZTBA2395285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4f8c9ccaa0ca6f422dcaaaab048f79dc3633e2420e98e1b8685c3024309977. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZTBB2304774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe694931e4cb6040f699d8f08fbafee5ef6477801baae2e650905ab80b0193c0d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTBA2395282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6321f4ff0fcaa4d363fd9217c5b40b845a48d290876e1a019a38249bda0872. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:13Z), 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/QZTBA2395287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8c014cd4e0a093c3c6ed363f3eecdede3fb8a2dc1e532a69a170efda663721. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTBB2304781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fcc5b153393356a0c1deb4e9f5472249053863ed86774543fe5d463cebfac5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:59:47Z), 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/QZTBB2304773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57d8b3558c2cae73c11224cd7ee5f60af579b098f72ed03143a1e05fb4f70e5. 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/QZTBB2304777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0941c292c852a5a69aca8f068ee5154aea1fc6c865f4c78b1840fc43545bf920. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTBA2395284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d89dd717fb90bb06814d3de764fd3178c417b83e20cc4f98d7995a26dbdc202. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBB2304778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbf4830464e938c52f54492a7fd6e4542c993b71d9403cfad574dcf79cdbdde. 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/QZTBF2416628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e6071195eada694607c9365796e2f7914d6d000a3a1c8c17b83b14560acc3e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBA2395286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ce30fe60d619a8ccf8088d7667e0817f51ff4bcd8b2f592e294ac7e018c926. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:37Z), 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/QZTBB2304779.