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 0xfb34cd2834de294aff03b390abb60e416eede010ec0fb86a7429c2b1058f3c45. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab9777b7-c990-4eb5-a379-876e0dd18564.json and https://artists.proofprofile.net/proofs/artist/ab9777b7-c990-4eb5-a379-876e0dd18564.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 0x9ba3049a6f1af3bf03d6a2a1193942e343cd8651b87ab22f0ea59d294bfef109. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:42:59Z), 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/QM2PV1861356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a7e631cebea1ed9b7024fde055f389f4c5de28dc6a998c33e8b4672c6fa7c4. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZFZ22081214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7466e34a01a72e898dd01509059c3d0a7656bddc670de3c0b533906af9f677da. 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/QZK6K2011306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05a619e2f286374032b7713e35989e19f88711d04f25fe969f71a632e8fd85e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNWQ2115603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a8bae5d95adfa45e4e27416b5de75a42220cf735b48bf5e792ba989ab17683. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:35Z), 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/QZDA52146099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ead6325edebae92d29ec8f416074644e710418aedb5dc33fe75e6aa6873d22. 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/QZDA52146102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f2b072e6c95fe426be42853980b51388617e27dea897bb0cf0dba20c949e50. 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/QZK6F2112088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08194f444d5eeefb2f43dc4dcb71d306be155fab6f60fe1f18ee39efd16e17b8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZK6F2171895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991039f2a6ea59f819877c15447e6e75a2838d6be7966003bae8526c9c01efad. 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/QZNWZ2260528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579ff10fe62997c8409659912b230d153929655dbe1d20bcb2cc9c445e8810d9. 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/QZFZ22305702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee8aeb2c9e7d7565a8ddc85513bf6f9aa5cf350d86589f65228070072edd61b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:42Z), 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/QZTB62360120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011beb6f07177f42a0f20401bb1f811ce954a7b03bd77404285a6c2f54b147d3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWZ2358438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28deb02a32c8b51a9e727293daa1c246b82e5ec7d05c957cb46e49d88365a9a6. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:47:12Z), 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/QZTB62360121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a77838479c9d00f6f2c6c70a5db9bb7d8d2dbb54f65d76c9691a824344566d. 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/QZNWZ2259479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f20a852920bff0c042c598c7f3507a7c4e3e7b923a8a0f9c3e508c45d8bcdab. 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/QZTAS2262031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf448269856f9a7844648c08aeb185619d24fc1bab2a297f0a25c9a7d79e2c2. 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/QZNWZ2260527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e058c329dc4e2b2bbd2706b91088e744814139110a007d3ead87a46fa97b25. 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/QZNWZ2259476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8913151677200a6f04fbb5025e54e2229ebea1ab86eb5bfe0f02ece66356c8. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZDA62244151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c77a820022d81182b59ceea29e79e0eea8028ed086e0209c06b4109d65159a0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZDA42216282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991039f2a6ea59f819877c15447e6e75a2838d6be7966003bae8526c9c01efad. 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/QZNWZ2260528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e5552104521cd5e0a83c0e1ed8c28f7a9b6677e5aaf1668cf2e32affef965b. 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/QZK6L2028941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25853ba41ccb103232df5eab9ea89e6985b39be39e048a5736d13fea70cf692. 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/QZWFR2374807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0d34afc2d7e3590e376e2104ddcc77f38e660e1e11fcf4aff3efb5f108a70a. 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/QZFYX2475453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d17bf5ed83b2d45262bc0bff65b12a37093c0d4d4ef14a20ddac6916bc18cc. 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/QZFYX2478184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f06dd39c4dab3d89070dea02c585b1485aa9b4d9d6558844d7e8d558b88307a. 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/QZFYX2478230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bec74ea30295916541d7b97b4e6c3583c5b11a87b8b30d078bdc1b3e615e16. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFYX2478330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23034d1f6ec97a284affd608cea29b4fb207b13ac45f860e62491075ec3127b3. 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/QZFYX2478374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7ac0e20e2955ea6ab44e2efb7475cfe573c0155d902fb9a6d4e239847729b0. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZDA52579691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d362d8f870bbd78188adf09ac17fb650e61a74f4e20d434c6366f527af84d0. 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/QZDA52580688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2246b753eda9afa0b2729fcdc723bbd61ff8953e4f3f1dab186530b7f9db55a7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZDA62531177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64482b81e9785a7a9305f83c2e0466a2408f2b8fa5091b950e8a62b83defb990. 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/QZHN52543452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7ac0e20e2955ea6ab44e2efb7475cfe573c0155d902fb9a6d4e239847729b0. 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/QZDA52579691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5989ed9cd19aeeb6e2c3ebd4902e3ca064ee690073ae3a3cadd1e2ab8650b49a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHN52543453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d362d8f870bbd78188adf09ac17fb650e61a74f4e20d434c6366f527af84d0. 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/QZDA52580688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbaf357938affd51fee4c371674560c957ed74369286a4829df4b5d6fa53cbc. 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/QZHN52543454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2246b753eda9afa0b2729fcdc723bbd61ff8953e4f3f1dab186530b7f9db55a7. 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/QZDA62531177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e2f824e16c8337062c3e5447c886436acb21946115b034810534ba0ea6f7cd. 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/QZHN52543455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89474c94a5f260bf715f66a411caf0c56b7ba5b8bb188caad0a3ddf982e9617. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52543456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7221c15ecdf5ff6dc9df22ca985f7139400c481aac3028670dff739778117c. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZHN52543457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa54fd8e82702da5777a2f502fe2f4c961b1715de5e9cfc4a260b4a50cc956e. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:59:09Z), 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/QZHN52543458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0290d8ae67e9dd34fa54d21f0234ef8400146ddaca6313e8a5736b5abb97894. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:48:12Z), 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/QZDA62533381.