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 0x41e729a4d492031946640fb56576912cc6aa7c9e5995737e31b376eeadfa9253. 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/6d9f7f81-1954-4883-9b87-e95cbca4f8c8.json and https://artists.proofprofile.net/proofs/artist/6d9f7f81-1954-4883-9b87-e95cbca4f8c8.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 0xca78b427c1876d7b26805314db9719aee38dd29742f9879634be96bd7eb0438d. 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/USSM10013123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f0c22f1cc1de3d1851387b4a5b779fdb560946605c73a5753a52e53e405f06. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:57:05Z), 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/USSM10013275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9289b83e43225a151bbe5fe07971e2e960bd7c55a5cb890273f0bf4f80b336. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/USSM10000889.
Bartender (Sittin' At A Bar) - Alt/Rock Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21a47a1c0f39b0fd08e1183e1052bdff257754382e084c726f3a82b497c3d18. 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/USUM70816132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e840c765952d23c93420832fa533b5c4181254a5ac35eef1a7d57cdb6b6a21c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USUM70818395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0374457a1a88481d99eed8ebfb30bf174d0a3a88cefca2f3a0beb979930864. 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/USUM70824095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6c908d4e16c404e3f9a3f9636135c0fbf6755384f44e3db434e79573d8a830. 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/USSM10801514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bde50d3d499edf8a31313b292eccaf8cee2eb2896797dfe39590e8b7639d516. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USSM10000886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56214abe043cb16f3bb1a4e8f04cf76c765de59d5e3d5f036fdd8c8013d316a0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USSM10000888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaa68a0c7560168e61d2e698c661a319ac39aea4b64f83370da1ebd74f83a41. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:02:55Z), 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/USSM10009114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f914038a0a064c3a6fcbe816b232fb921abacaff2478ac0bfcbb134f2cfdc3e. 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/USUM71020532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e712594d1a13b3dbe82aa9dd08068e1802838d36b598f5dfc35b482df3c24d6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:46Z), 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/USUM71020535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86393ee4ff0ba7ff267f3f92522eb1bbabb95a9a48a115041e6e99113af73c1d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:17Z), 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/USUM71020537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4e652fde7d9d4ebfca9a2869d116b85a90b2d24e7c157644695c2cc6122004. 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/USUM71020585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9119c43747d0ea4c936ddf24c66473ec921a952be856fad16cd66543c54d90e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USASN1109634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534db0fd467a2c779c5ba1e2415bbf6a7fab310cc0d757cd42479019fb539402. 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/USASN1109638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476ce4cc0d712ae89b6fe22d5523f2cddbd80e7539424e9b01433567e538421a. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USASN1109639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919131b3977c3da08e020107ee2fe231229ca2cd4d3930dfab0661708b8eb7aa. 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/USASN1109635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0029a19fa271b2c967eb88921f56cdf9ac43b84481b26110e826b354ca8bfb06. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USASN1109636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347ce2ed402f0266c8ee230bf3e27617b72246ee1ee7f3cf4a00cf984622158d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USASN1109640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd111be750a0ab544e81d59286111f64d0e9e7a69c68506570441fc4038bf492a. 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/USASN1109641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f59b0834e91195d2a0566f3e031cf1ca6210b1a5cbf826449ab6e46e6439c1. 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/USASN1109643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafc6b55e22358e1ce47e294308bcddb6cf24d9546962b3c052fd0a6046f252c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USASN1109972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d4866004568d8c60fcc0618e802137b2f14b164e5845c3d4217efdd5ce1a31. 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/QMDPP1700505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d33fe47c78a750b4d289c7c1ff132b2a9027211469791790e3a1285a750d2a. 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/QMDPP1700507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfab983481e1a701ed468536113cae7e5b827c173a85c0a9e9b5bd6776ed7e8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:17:02Z), 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/QMDPP1700511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eac2364c02ade18a7aefaa84b7c52f6ca14c83bd291b88ee30c0c38549c0874. 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/QMDPP1700512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c865e78c9fd64934a0fb372a74134b960c6fba5dcb76f25f50b719e91135ac. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMDPP1700519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ac629f773ff2d2623f1c32963f223c149851a11f4d529fe0c19fa7cebd7ae. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:13Z), 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/US7VG1805330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7267f767555a3508ccf3ed361c2510a44b419b9da5883b21483e635ea36fce. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:41Z), 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/US7VG1805329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e72e6368ee67e24e5b8bae895dbd354973ea43be82fad29b9f33c4058b0b4a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US7VG1805328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeccbf0b32d0bf3a268fe3a32858900d94e2175eda011a36a87a1cad8e1d5ef. 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/US7VG1805320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b560f20e4e390a4909953cc7758236a35637fe8fa857b764f8d91be17cb51bd. 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/QZEQU2134165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516699a3b2ec30256f4fc44e9c39d1d665166bb69984ef0831e5cd30cb424c42. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:06:46Z), 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/QZEQU2134167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d01b3026b2e34efdf7ca5e8deb960a7c0e92b2969fcd62d85f61be17cbb42ba. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZEQU2134168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f5fdca577598285dc7489796299196214f97015ac497027b7e5d9606df8dd3. 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/QZTVM2342138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dda69b9269801cdfaa922f924fdd90891aa9e5dce2794671998a2f7fcfe3b78. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZGLS2438838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e712da08cbd1b6a3c83cc25b2572bbf64c3c5c9cc76fc91f8e86c6721adadc. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZTPX2454205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2047fdf6e3770655fa347b994f99194275981d5fe7fa2670978e4ac73e27e7e. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZW9L2492001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437a50408a664ea76a6d5d22ccf9862562745e6ceb98813454ad8b0e435df07a. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:22:52Z), 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/QZW9M2442031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf031931e9d62d384ebd1fd6210834cbbb973760c16e1e152ae07db1225d0d067. 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/QZW9M2442026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0e3c8e9fa103f81b38a70a06425f9d8fc1ff748554cf41ecafde509bd2734d. 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/US7VG2530611.