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 0xc0ab121fd80b56a3bce7a6a249f3c0ec2cd15ae371792c174a486c573014fe28. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55ccc6b6-72ab-49b0-85e4-c5a9b5fbe5b7.json and https://artists.proofprofile.net/proofs/artist/55ccc6b6-72ab-49b0-85e4-c5a9b5fbe5b7.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 0x15324fa1c78085b1b7483e92973eb0332439b67ffdec3412fdb9b0b2bf3ec460. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CA5KR2126545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eb12f1693d8041c0820a7eb83ee3c955796a998ade06afff496daa1d84a95e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2126546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707931bf52b0d3cc35251ab1b016bf63fcb272ed9b47e22e97ccede19c6f0a98. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CA5KR2126547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aa5a43ab3c79b2f35d137b2e9e2fbc2999c8f12f4616dbcb84b5ccf192f8d7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR2126548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b493ade92d3e3d08b8ed94a8233e07c63341b20930f8e1fcf3ac793b3314439. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2126554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2588ed622c9f02c58aa44042f3156aeede2b7dc68598af8d9990905b2fcfb0f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2126557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d510e6ae0b7b1ff7193e629ba6fd8cfef645cc59e50450726cbc0e04e4ce57. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2126558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bd3000022d9d9f7b2cb6cd2dfd23cb4fe5912c9a8ceb4218f3db3e99a69fb1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2126559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec0992b208209b0ac6640468784186d4ab1234d31c9c0c8525cebabe94ca2fd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2126560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233f30605b5a052105a3525935fe67110173236a9f3078838c48ace50e5e70e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2126564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbfcd071260a69fff853e38a06d8d6e454b7772b26a241d1d21c3f9049d6428. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2126566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114593703033d54f754ead53e8f1c239c0e67ac4cb8d82ce2cc965b457c89f98. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CA5KR2126565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed1e6009de202f5f2b3dbf472a275c3af2086dba378a6c9f72fe6a64252d5f9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR0037044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc256e141694d51ec93f3fd2727707938b369a15ecead8e0aed9021220a6ad7e4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2153938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1459d9bd7f8331d03e809ac8bbd2295d7896157244514aeb8e3a6cc41af3fc04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2080303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04af4a3818b1bf53673b5f989e8b8326ec8252e7f200769fe3bd446ee78887c0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2080306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5440fe72f4170482ace42b799a5d75ef3496fb297b6225699bca55a177e2685f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CA5KR2080302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8240bec4e730002267b7a4e0e4aadfb9d2f40993bb5eac6517d93c43573df420. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/CA5KR2080304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1405da57d0c7fc18cffb0623338dc1bfca2e7f4d8007ca97d4ffb25b871776. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CA5KR2080305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cbd2034da054e23c77a36b1e1bc21007afc2decb8a5dfe21119c3645f18bfe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMEZE1949888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ec74e1697839d077a2a85932c2d5df52ebc47a5506ab17edefd1fff61fcd08. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR1534228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a43f2ba98e2af0f8eba8957c811335bf8638b244dc8cc9a56636d22d7e5f3ba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMWZB1510965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9cfe7ea1c2b2e54131a8f3aba3d900ac6a678f4b284762d5f5abe76deff77a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMEZE1949957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17745477d31466271b4eb7b22c3566bd22f5e2055af290225395a4ecd6354393. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMEZE1949943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78836b7f359652b7f9a105f0b4bf2db8a76d839ec9c7aeafcf3ba75eede25c18. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMEZE1949942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581d7a912ce58b5cf7a2993f12d308028e53a784b7719f51ace85f8134ae0270. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMEZE1949941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6175affc5b0fda6290f76125be0ad139721300bef3a13bfb6cbeeff6a0f49feb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEZE1949938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca81e7372b8cfc2c0c5581f4846feb0a8aafc7a027889b7644f38b67cce9d639. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMEZE1949937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d048c078ac794d61a1edde7ff2f9a36103996b707cc3a7fcb85993d49be55ab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMEZE1949936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30f48efc0435bc4f8f2af5348e678e14c7913a9d52499aa301a7bc12fc4b431. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMEZE1949935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73c0ca354fc35b14d07b6995170c6e5b3f6ebd8544562fa9fb70ccd1c659981. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMEZE1949934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc472b2c67985b4d192dd5212563b75814195c6c2423ff793ab8174cfd8a9bc9c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMEZE1949933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42b16181e93c471f2583d546abade3b9b6307f84876604ef4613fe65a53d904. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMEZE1949932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ead2c5889063c2678fa10bcc5ed71833244c8cf6e9f14947c3ae386dd3dffa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMEZE1949931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e57ca9e9b2523c6b8096bba5f58490c4afdd95d60d5f7213ccf97fd42863e1. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QMEZE1949311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd314d6618ba2564af98e7dbf7d3ac408cf80a28fd35d419870b1766126a142. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2125172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e99e66c82451b5a307ec428788b0405b6f6c6760190aba919c15efb764b7f3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:34:51Z), 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/CA5KR2125171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37797e6147120db4736a6426e24cdd88507034a3f32ad72f2345c96cb6b25755. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM42K1615532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c1170fc565ca75f908c492c65459e3dcb49f980ad6706b82458898ea380ff8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKFZL1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffd740992d5e576bdfdf049f00289407a7385737f70e8954a9578ecfba19997. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKFZL1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf4c61b883c607b376853ddba98e3df57f07ede81a0239cee3cbf074b030fb2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKFZL1900014.