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 0x40ee86583a98fb89060e4258c5120713faf28920b1443eadcbc762305432837a. 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/de70cc84-0ace-4310-8e26-9cad8f0bc2db.json and https://artists.proofprofile.net/proofs/artist/de70cc84-0ace-4310-8e26-9cad8f0bc2db.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 0xb2663535f175e5d1abf3e07b0ec0c90b14498d34be70f5cd6f8245e1307f5666. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEAR41830654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0544e60658daf0cfd4d7051bf0aba9923cacd15adac1ff56c00debbdb663ba7. 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/DEAR41844404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9a562fa68354cbdffffe7777f0fc607f9091951575bdd365e0d96c96d4c10e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:42Z), 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/DEAR41859008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bd0b073500ab0dec19879ab3c7f0d234acbde33f2c6ef45f6d6586c32323dc. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEAR41853626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4651b91498ebd8c983620d7f350703a6039a082a6083485dea9d9ee3271000a5. 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/DEAR41862245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae81c9c7e21ef1b30522365c5ac9d76adb1dc9f7f34c33b9b9da545fec57630e. 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/DEAR41887727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1dc1ad44549342b392a1daf86436a7d873c1e10657e3e4a0ed7e3ca4c9b714. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEAR41836090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00691abcc373d7574386a7e8f4f47b9fcee31c3db370a219558955f1fa4f803. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:37:18Z), 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/DEAR41966479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c7942338bc5fb7ff04de453177a5769b7f64f0175a2bb35c18ab726585c0d2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEAR41954741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439e4175692f5ecee0147978ee2e83bdc0c4b48436b40dd887103f42c6f3f890. 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/DEAR41990594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897dcccf264465f98c53f7b25eacce03176b3d86bff2fd2e47b8c4bfa4d4ba1c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEAR41992366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698242b8cb27546813990ebdb3e375b26787de59fd21542015207c4e4f158d48. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:32Z), 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/DEAR42199167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54575231d349e3481cb22d5d8cf9293b9dde8106f0e7762f8369cb3781c1ef6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:29:51Z), 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/DEAR42163879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58019426121efd4f5f6d2df810916e1b1070a01a7fd779dc15c37c9864db019. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:18:59Z), 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/DEAR42169571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1a579670cbdf635b979f5ad9a434ac65e3d3af6694eedd01aac8d6bd67de71. 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/DEAR42169238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5e7725765af2eaf3cb01e08142345f8740ab982b121f34706f2ca60214e4fe. 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/DEAR42169582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf75f6acb7909fc58cfd4e48073da185e5c0289d1da3ee1936ac76345182581e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEPT62450011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a2924f7a4bc7bbb47834a200097cff3cad6b6cfc5d6c06b43f3e079864dbdf. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:31:37Z), 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/DEPT62450001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929261b303fe9a5c4f06cc9dad1707280804e8ad2a8fcfec80edf5b38e158594. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEPT62450002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46263061a9a14162eef55838bf3a97d4b64907f2484107a6723ac07c69d477f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEPT62450004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf635bdcc347bd5c696d9a3230ca1386f0cd9bac44f6d71a3127901d1d0d1fc. 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/DEPT62450005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bd27ff50fb4ed937c3407d539c47479849beeebd5d45260641d9d61cfa6a94. 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/DEPT62450006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b9a0281c5a999a4a7801e6a96052c827d0094a0064b2de868911e76c18c16f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEPT62450007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf75f6acb7909fc58cfd4e48073da185e5c0289d1da3ee1936ac76345182581e. 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/DEPT62450011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb385af6661e71f67672e98f2cfeb936a92ff686015dc9f484a2ed00fa3363d45. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:02Z), 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/DEPT62450014.