1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x81f74731d8270a17d8e13121169f7f92c711d70a00757490a47741cf5c915b11. 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/f50ad677-64d0-4661-a3fc-38b548da6fb9.json and https://artists.proofprofile.net/proofs/artist/f50ad677-64d0-4661-a3fc-38b548da6fb9.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 → block OTSBitcoinBlock must exist at that height 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 0xa5e719e66990811394d2ae941f79183711bb4fe7e68aace5ac36f7e1c262ddde. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US7VG1787133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4710c54de13298609e36b768bf465b66a25ac07b9f67fa2795efac3096d1ba. 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/QZ5AB1843549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96639c4f02a68fd01d4e330cf5f31af3574c30d8b16177135d5c600f09f935f4. 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/QZ5AB1843553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4e5df2b9fa7b97a4d93847710d8bd75f8d8e0294bfa44d4269808722ed0b75. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZ5AB1843555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eba48390245d4af84a05cbdedd3af09d266f4ef56d982fc336bba5832cc62e. 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/QZ5AB1843557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b6d75b0e7c1ab780de4df0698c4d0d84d0352f6e239f01984aa398b06f41dd. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ5AB1843559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ec25cb3050f9a8aacb3f6dfb19e9d9e7bf7d147e826ba3f34ea9dc1e41e4d3. 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/US7VG1787115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef49e863b78730f353027786c348f4d388424c57bcad5e6bb806738672313968. 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/US7VG1787119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14091ef1481b5cc9bd89edd288030cd03e59b73d49b9b49d2dabdd4d9a8baded. 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/US7VG1787121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ca6a0394542b567dc981fbe78a94eeaf5373ee07b603fbd897c0dcaeb5da97. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:59Z), 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/US7VG1787126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de0d2263dd1ba60842281d604a13be3123c036b6cdffb54fbeae3db5f7bd054. 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/BRMKP1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2d4895064e9799e2b6c4477d6f9227cce115e5601ac2db06f00a980b8029fd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRMKP1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca1c391e8f000e7b51a661d9628d73bbc2254b6491cb7154bcbb667fb6cd711. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BRMKP1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f36f03f3de2b90344ab6adcb9ef31777a9059e99adfff4bc60db2ad56e400e5. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:45:56Z), 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/BRMKP1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baa8f17fecc46920ffb1412b743a2cfc7ba45e8a2d3e5f3f431fa349aeb36fc. 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/BRMKP1801951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987c876c0cc3bdfa57050ddd914c7886ff1456f0673376d5137c6ce4ae484641. 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/BRMKP2000261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73de1ebf163eb45349070da5f208c0b6e0d5de0dd40553be4b908a3094724b7d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRMKP2000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f5ddc95668012c6e70cedb56f56c98d3112de39a8b904e3cc1d8f4a5c4b7b. 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/BRMKP2000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e5eaafeb03f3458ce7b818003023b8d6ae7d1ce7cec188c5c8000624686634. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BRMKP2000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bb6c872d3576da81c370baec05b176fa43da9ade7333b96570257692b8ac14. 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/BRMKP2000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d107a774005f4228a3fd04f473b535c68971fa1847e8d6b1d720fc12c2dc655. 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/BRMKP2000540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7094f0e02b65e92fe0653e6f78f4761ccce76db70d2eb9145a8b5a3903e51a. 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/BRMKP2000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3de559b44bc693dc5f5620699ed9be7d86a0d0ad8597cec1069f0c00e200e7. 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/BRMKP2200291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2afeba550a9130de6fd39e902bb3618cfddc42f09e301f6a15c9132688ea3c. 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/BRMKP2200292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80931994113f5dc0bbfbedc0df4bb21be0033314a752caf011077ec548475a25. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BRMKP2200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123384823efa65578e16999048262760d701545f65a7f0f74e0898cc75790c7e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRMKP2200294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50700ef39c688fa6522035bc747c6d2e798c7c733dd6bd85b85542a21c5f579d. 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/BRMKP2200298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe430e521e3d383490976dcb950412f334ffe98d5019d6968b04e8be81702da4b. 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/BRMKP2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387e9a8143fc30e591f58c5122e6015bd25ae0571b7aadd707c3503b9a229da. 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/BRMKP2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c424ff3ed6b58e64df148bd9ca7a5b7b92ee601f60f0f9ecf852bec9c8040a. 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/BRMKP2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149e9681f0361183d14bcad91c161c8faab7a5a8ef1c0179f2faf1df62595bdc. 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/BRMKP2400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7266ce53adfd08f275e5842dca7ff47969d7e23fb8fdb90e5925c5881a4f2dfc. 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/BRMKP2400266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9490da574d5f226cb92705030d5f12213dda75730c669b5d0e2b94485bfd3e55. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BRMKP2400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7d390de5f11c6b49eae2068f1593f8b10c9cd2102d83bf0370b97a410823f8. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BRMKP2100386.