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 0x7eb13fb3934088ced79215ebdc3a82c487bd7e656e254384e00292e9a4736a8f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed8bc35f-3c59-4c7d-af53-184a973f22b4.json and https://artists.proofprofile.net/proofs/artist/ed8bc35f-3c59-4c7d-af53-184a973f22b4.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 0xb8ad8d92b7c84497d903eda6fee5a78683fdd28d9afada98ac1fd338617c8366. 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/FR9W12358726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552179b607d9454ba5de193ed066631d3127f034eb728e3f067253ed31c98e09. 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/TCAHK2371589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c37405f255c54f05471eefad04e697cb200ecad55b61584815633dbbd762d. 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/TCAHK2371600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceecb0e2f5f153889d68625412086daff9ad6787af5668396b06fc38b9c6899. 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/TCAHK2371604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac953458915436b533ed4aeb4b76af6b3b329af489efe1b5753bc14ecd6a1710. 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/TCAHK2371606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dede452f4f5a1ec69bd485564e50cf1ad339af5a8627f12ff6937b3e598feb0. 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/TCAHK2371629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90df87e8b94414c0d8722b9910ee1deb120690d423e873657caeb62b78a54644. 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/TCAHK2371634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2995329e2348bb00c45b0e25c5b86591abcc5485c03a2193ca0a444fc2f25411. 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/TCAHK2371640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2072ed2bbda4dc9fd141a43e912202533c60b21cf3c0973d828bd9e61df0e6ab. 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/TCAHK2371645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b769650f4e872f63fdef04a0a986c8abcb6a3a75e6b6dce68acdb330c4bdc7. 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/TCAHK2371651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c6e8fcf265f724da10c0da405b144ed79e3ff86eef80ea960858d243303aec. 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/TCAHK2371653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b6b809ee4ae1c72930bfc6d6a5c8d67aa637e3762130c235b1422b956b121b. 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/FXQ022203294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fc93384431b98db5b62dabcfac17dcbc7c6920faea9204175905d7d17aa3d7. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FXQ022203295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da684013a11c33d72182955012305ba4e2e3d6e51924233a2136083e9c8d0e9. 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/FXQ022203296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ee365d8b75a0722e5bded01756ad3a4b35879cf12ba98e30304e5be9673f2a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FXQ022203297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7796a026687d4805ed341b5d0a6ecab2157d5bb1f744633dd4e2f516042b792d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FXQ022203298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7de12bb8d8aa3a8a0bf183a0233b13ebe390a1d8cb97c5fb3314e1af39fd34e. 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/FXQ022203299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe3d7840709e4ce744c17b335957d661cf29469b8a5367325d7f69ff19d785. 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/FXQ022203300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39acd9f754401b6dd089238693dc7063abf3375e058202de422d2c4b8c991383. 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/FXQ022203301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23103599e433a227165f3d2235145a99d53fdf06b3f465d8920098d7604c0a04. 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/UKXN22380444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00629611cb0e7eb7df93d45076c31d0423743a2cb59324b3ebd21b1e6d73fb2. 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/TCAHJ2379555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4d4dca0bf6b3ff3a3a1f7097a2ecf4f8a8f4d08c548af89b98ca3678e5cabf. 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/FXQ022203398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691a4c1a5c144acf0816a29e7b01aa8a6196638ed7405e60e0babb1c9110793e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FXQ022203399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35faeb2b664d7262c00e2d8c4d448d98ce7dced558715ebe1b3d5f7016f113c2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FXQ022203401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc437ac2ce146a30060801f76060a2ee926dbdddd11692e4f2fadf9a3c7a64034. 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/FRQ022102224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee41753e95e0510db3b97e5a8ae3500731644c4dbd50ec7873981aac2a2b1d81. 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/FRQ022102225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b24d17c1e46d42031bae72d5cc5d64958d6ea373f4c6c655969f3076b17265. 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/FRQ022102226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc93c767cd959a69544d3d67b7d8b1b428a53dd2509c9abe14035403440db923. 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/FRQ022102227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a3b8491f8ed4f23820cb5a68a1a7fc6fbda2677eeceb143d8d71d13cf6fc5. 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/FRQ022102228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22cbf59a3ca686bcfcc0b712d1d2950c02bfe26e81b0445646b67e5a586f747. 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/TCAIG2458580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a67a3a247faa261fb2fc2b6c6db1a70fc521929ce182f53a47b8adbe02be5b. 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/TCAID2449036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c37405f255c54f05471eefad04e697cb200ecad55b61584815633dbbd762d. 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/TCAHK2371600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552179b607d9454ba5de193ed066631d3127f034eb728e3f067253ed31c98e09. 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/TCAHK2371589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c37405f255c54f05471eefad04e697cb200ecad55b61584815633dbbd762d. 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/TCAHK2371600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceecb0e2f5f153889d68625412086daff9ad6787af5668396b06fc38b9c6899. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAHK2371604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dede452f4f5a1ec69bd485564e50cf1ad339af5a8627f12ff6937b3e598feb0. 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/TCAHK2371629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90df87e8b94414c0d8722b9910ee1deb120690d423e873657caeb62b78a54644. 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/TCAHK2371634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2072ed2bbda4dc9fd141a43e912202533c60b21cf3c0973d828bd9e61df0e6ab. 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/TCAHK2371645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ad8d92b7c84497d903eda6fee5a78683fdd28d9afada98ac1fd338617c8366. 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/FR9W12358726.