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 0xf18633c8a6abceb491dc2c69d310e60bdf4b0b9a0530a681498148fc979401b7. 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/0c02c642-7883-40c0-8776-65b9b9078aaf.json and https://artists.proofprofile.net/proofs/artist/0c02c642-7883-40c0-8776-65b9b9078aaf.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 0x3156feff84cfa859c7f5cb45142a05b4f9e4a19143edf4cf9789b9812bb990cd. 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/GBSMU2092317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c415ae0fbf7437e51c0830cbe5ccda758f96722b27089b04e6e713d27a6b84. 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/GBSMU2092318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e4d3cf0589734f965eded2ad91e1e3b5544c996882609d7f2b144fa4e854d1. 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/GBSMU2092319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e826ae8496950e32ddb41fc0fd2878987d1e2d76e5bbae3e4c6b3edffdb4f7. 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/GBSMU2092320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0dcc152d5de859c40d2b9e1e279b14bc414d967340906562754e92c6120b16. 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/GBSMU2092321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab79746779bd5c4cd44ec7fdbe4c18043ab583d29328d53f82a41908466c09. 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/GBSMU2092322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee19b5bde4c9fd07aa1ab39ffea42919eb334208a06127ba8fce00495a855fb. 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/GBSMU2092323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6548d7352404db4d5632958d875cc872c05773225e6177c117f2f300d2feb836. 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/GBSMU2092324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657368b9a3d9127672c3472f483ddc69795e7596d95bc2f6175eca2338e8c9fc. 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/GX5MX2310709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657368b9a3d9127672c3472f483ddc69795e7596d95bc2f6175eca2338e8c9fc. 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/GX5MX2310709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8757ce22004009a1d955ff9065c395e7b682571442f60a70ed828ef81fb63c53. 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/GX8KD2356216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87faafbf8f0cd0516bb57744d9d8c4ba147c8d7519913d068421f421f28eb4f2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GX5MX2278519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58140d679d83453505477238e29633a9cc335c25cf7c5b89f7ed5c7fb97d1be7. 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/GBSMU8924023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585759bf83f5c39e6b19b6daab33f47fc84b319f0f60516f9216ef93a28adbe1. 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/NOG842001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad1be50bfe93cc12dfb3a1c90be9dbaecc78685a48bdc1a3f2515fa6b19e77b. 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/NOG842001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f515f1203345315f803b95a0ff6faa411733ccd4ebc66d6795a63c5850de2d. 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/NOG842001050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0627a1cfeaf59101432884dfc354afd65eddf3a1af555a625e1e16b8fd8dff56. 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/NOG842001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0627a1cfeaf59101432884dfc354afd65eddf3a1af555a625e1e16b8fd8dff56. 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/NOG842001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d848b5a256f497a93bedae2f31a82a4d2b8fa6fd7fcd07f5be34e7106136de5. 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/GBSMU7506223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c2dc21f8b4145bf3ee2566d68f188caccc5789885415538125b2debdb0f0e0. 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/GBSMU7062477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d98700d55bd9d90e3ed7c1790491514fb70c7d3ecefb1d07866564ccd487ab3. 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/GBSMU6673512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b70bed338dfdfccd0198c26406800ff4b0d27583fec03891b8d525f4330c985. 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/GBSMU6492692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3381710a7c080b1e3a8496ec31235375f6b0c1479caafc42aff148009ec9f7. 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/GBSMU5154925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28071b4a649575a3f73ab54d1f4bb2e6a3341dd10880c00a0d7bfaddf46b055. 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/GBSMU4030082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ea546dc737f71819d00364cbcb7c1633ede19514ed625ba935cdcd5d17172b. 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/GBSMU3543664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3a43899bc199cfdd875da12f46adb238fc0b89419df7b0625b2bf8bd507688. 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/GBSMU2552169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92de199b811f7f5ff44d0eef5166d1a9e2210b072bcb89afa60bf5d370c5d39b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBSMU2092201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532409ee0ab07784b9e56a04d6c141188d963675e969e06e92d79b743a5e56c1. 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/GBSMU2092221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d43077e8456491270c8991e5259305aa04209b145e87f1880619f92bf429f2b. 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/GBSMU2092199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2d7d4bdb49ea79a4564cbace6790eb46264e1afaf7b8140e65f5ac562db668. 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/GBSMU2092203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202e2fc82dda1a16519dac3cbb612fbd3fd8c9ce8655eb8a867e0e7385cb0255. 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/GBSMU2092279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c9699ebf846ed4151edda07bfa9b1c997d9e93bb85be7bdfb6ebad0b5b7fe7. 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/GBSMU2092334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a006cfc8f397223e4afe6e50d39fdac2246c4c1c1b93e27f36cf0706a82c17. 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/GBSMU2092336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23be134afcbb968fe3ac19fda1e8effe4c387f6c7ecdf234cfd944d6fbd5ec46. 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/GBSMU2092205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53fd9f0cd0d6463096d9948e2cadf534eb7c35dacc3542917f4627166d1e2ff. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:51:22Z), 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/GBSMU2092209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c5808d6984782e8c74f0d1fcca392a698f9a782cea5a0b70fa42efdedcc2da. 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/NOG841805030.