1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0891e60890efbf94c7f22d31df769e16f52449fe345ed4e01f09017baa566054. 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/a3d97777-8871-45d6-972b-e79b942d6f22.json and https://artists.proofprofile.net/proofs/artist/a3d97777-8871-45d6-972b-e79b942d6f22.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 → block OTSBitcoinBlock must exist at that height 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 0x1867b58addf057e378655ad6f7518c3484cd10855cd7e66bef4d1f082dcba0a8. 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/TRA161600266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646936caa92f589ab29ae6f989615cde2d1b1605a2f5d533e62ee9853e14bf40. 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/TRA161600267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac68a47083dfb45ae89ee51a99404daf3eb46534b9d2791a87e25eade966ac. 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/TRA161600268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7f3a65fc027cf4001b6acf48a2d75f5603a41a73a8c6537ea0e1e5b9a619f0. 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/TRA161600269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a8d21bd80a35347b0188cf2839c4b11f24c3d118ca1d60cb20136786cac331. 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/TRA161600270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a2c95c092ffea13e3d5f0c25702f4aa70bb7f6ab8266e4759ff912365498b2. 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/TRA161600271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe451c4435cc0663c91359eb55120c264b6de35a232fa536adb4443886df3c72e. 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/TRA161600273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a06cd80a9513d430220009981bb73584433f72c32f93e45610789a28f59bdd. 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/TRA161600274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313e9c58058b9f4c3d5cd43bcc543b588e8a0c8e3a957a6e86f4f5617f250f5c. 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/TRA161600275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a38eed822ef3a8b610cd505edcaa886ace8fbb30294c16c8d947b2c8ea05917. 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/QMFME1463205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398ad63791a7e79fb8c8efeafa52f33875b7a25f9d5c6c4248a7b500063996b3. 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/QMFME1463207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94167111fe94aed237db39be14eba8e068a465e9f2b2b32666e276b50e7e2dc. 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/QMFME1463209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da7f5f85f41cbd304de766a9c3975cfc0eaabf6d75af3efd4bd58809f2cc275. 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/QMFME1463213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364925c6c0eda7043fdbecabea87fbdd76b8e07d23ff96caff004f2ce93ae4e6. 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/QMFME1463214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d472ccc9c14d3106e76d234998f070d6f95cd025e0ffb6ac73019f446a2873. 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/TCABN1320629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ba0c95aacdc632f4ca6aa28370a124ffc37c85074f66f296c87f3e8055e779. 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/TCABN1320631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f1678e626f125ca58102db91afb0357b85ba2857a3f351cf13a9064eb5a4bc. 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/TCABN1320636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f1bd2705f7e1d22c91bf6bd67ed65508b3c547448517dc35a4bd1d155874eb. 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/TCABN1320640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf0a7077cd342a52b4c528707d8956a43ea4f7dc988d49e3b53160bf9dfb189. 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/TCABN1320648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a2902a6e69dbd74d2f6ab3267d83a17b71db41310766b91e0ea5cd5e801bd9. 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/TRA162100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7521c683be6f90a69130e0143d19a51e7b905293453cbd6de9418af147f43806. 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/TRA161900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b853e4e14172e08e4bc7938747f3768325a824e07e90f7ce8c824fb71d8635. 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/TRA161600520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40281d6598644ac1c9dae3d2ca9e112dff11161f3266b9d1b1911a8b084122d. 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/TRA161600519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810a5a209428e9c62e78f45f770b72fa9534cfcfeaeb2789ea82890fd39203de. 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/TRAPL1500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecdf5d6c2a717da0f33e29725db8606d285e697b3afd17b7b9f48d94994a520. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TRAPL1500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1356015f0e7d17e0242cbf75da59684a0df6715b8ac4b7aa8c82296708249ad. 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/TRAPL1500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d73e27d356558a128332c94b88a24c4a63e4598606682057ea6fb640c5174b. 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/TRAPL1500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e458aa1b5fdb4c2cda650168612c66715da25c6505499f492b5786783e3dc77. 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/TRAPL1500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf532530c55ea94d025651d66e758f3152bb3f94060968d8f896d0b35c1b098b9. 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/TRAPL1500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93bec0d427e87a3f8f05942fa4098947241a699898b057accfbf0cb037bcbc1. 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/TRA161600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bffefc281963e9fcd252ec057a4a72505eec052fa8d3e3ff998a9fe08b9438. 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/TRA161500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f59a41db4c900ef3b42806bfb4a524ca8d8ec0c08169e8611ce4276d5b1c18. 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/TRA161600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1391048ddbe69eccb2c2610f3725a54cc33f383eb1e8a35227377da524a98150. 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/TRA161600361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd3c0198ea576a0301ad2388b8df25f0c891e94d8b0e549d1eb54a8faccaf74. 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/TRA161600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4615d80ca1fee8c549c350cd69fb17e66b114f1253f292b54703978758b9a706. 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/TRA161400218.