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 0x06fb4a44e3c408b07b168cfa285900efc5c8afc0e3aee8a0f9231c54ac7c75bd. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4fbaa9d-cc10-4f51-9311-5feda29f08c5.json and https://artists.proofprofile.net/proofs/artist/e4fbaa9d-cc10-4f51-9311-5feda29f08c5.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 0x11a11c000eb888c2e17e67cabb44ccf8c2958d73d4093540888b0bb84ff8f7bc. 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/LVA109600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc588dc482362b130e08b332fff92eeba4d767419970b09c96d97a9267de0fbb3. 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/LVC100600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d00f4a71319d0d21427171d36cb83068f3c4b253d085ca44d5922b5e2129db1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/MRVX20109303.
Ances Romance (no k/f "Klāvs Mārtiņa dēls")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d4505c1c77bf77ea39220d9a14bbf8b4be2ac7aaa68dcddbd1c2df82a816fa. 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/LVA051000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4815845e2b77853b117b8886acfe109dc14860b7eefbf77589a0f0ab6117ea6a. 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/LVA051000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5017dece0bc87e8b85b5de268ed73dc9873cd41990f2ff05b993ebeb3d70b5. 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/LVA051000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2cd525ab61e066221529be5d340dd1b162c091d8a85aa11f398bad00e3bf95. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:00:12Z), 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/LVA051000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea13332315c2832e1a693b35b193e6c3035303cfd286b92f63fadf7c7dd8d63. 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/LVA051000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e45be3aff14e9245a97b72482e8ed2ca89bfc4269991984f9020a82b82319f0. 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/LVA051000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671c99706b5d3bc3e39f7fbbf980fe6ac0ffd4e6785b227b4686883815285d34. 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/LVA051000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc588dc482362b130e08b332fff92eeba4d767419970b09c96d97a9267de0fbb3. 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/LVC100600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf796d5019ad9c6dc4f2749fd84d48e06791dfbd352fb483e1d4796a7395aa08b. 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/QM7281475268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937a5bf571ffd127d10266e9ec9cef6817c282596397bf3b3c2a3af27b63fb23. 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/LVA100100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebbd97adc988e95167ff41dbcb81a802a5d6570df4cb463c713d551ef4ec485. 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/LVA109600227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07804526ddfcdacfe1c9aee2d6ba2c574cad99377a9f10b3d97a91ccb6a6d3e. 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/LVA109600226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f2f0472f18b298949146f79c8c72f07f5e3ce05e566c64da764066b6cc2d22. 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/QM7281475277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5f9d28ce04138af04bfdd90f7c0a8eb471a9f9da4d487b1d25fa0661d72ea8. 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/QM7281472639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a66479826f8157b6042dc63f7ab4ae09e1715521f7e3d270b62a60507bef96c. 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/LVA101000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9eb985a1d721daee4b4582fb2d84be9c1c87183817662c9f359e6c662e28b0. 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/QM7281472640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992bb6f4380c472582468e5986d9b8fe886875e0463edd2d1e82f2f0f6b5a35e. 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/QM7281472642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194a08197b94dc25348ec641b2455ad66f000233d668994a845c031b8c047b87. 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/QM7281472643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821fa3ae9891080562b14a200f0a202355794c70175941a2e215d09b33480a29. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:02:34Z), 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/QM7281472646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed7c775e09e62ec5d3e2be0d65b75cfeced773aa467327b26f1b27dd94af9ad. 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/QM7281472647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf801390b3ef7e9dd40f3293a492f195dfb5606e1ad05b3dd2d76499d5739500d. 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/QM7281472649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cd1d4cf012ae2459d34936f00799a5e85c3db1c1e4e2e524e13730f317d05e. 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/QM7281472651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cab48f02d3cfb345ac035bddbd70a4da06fae8e20a41dd738d96eb47275f47. 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/QM7281472653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8744d9e307a700b2c59b44f7aad7c408cd4a6042de85ae86ca9d197ee11bc213. 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/LVC100500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2ded4e9eafaaa73e9e981f6f2aaa85c40619a3ebb4ba7dd909447679e4ba6b. 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/LVC100500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1fdc13f4192de8e6029730d571f02fe3b3dbb3f9725e4108c9357ba22bfe14. 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/LVC100500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8909f46d095b1be699feb6e8f7e582f2ddbd169b1824d3645d4c55a4d6f96984. 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/LVC100500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b21cadd057cecb70786bdcd17dc1beb3c3f47c8fefd9e8fb90333cd9bc000c. 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/LVC100500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d0c2b3c38c03cffc884a8c5da04d7c0f2f465782cdd044b50ae89708789162. 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/LVC100500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf755523c84e7b8b7449d9ed7c5ec2bc017ea6debeb59f47e4b043088a18a6306. 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/LVC100500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd559dc778f40a2cd55e9744502eb72775aaa4d3a73de4c9734e895ee140c0423. 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/LVC100500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32622351962468c71534920f9a925ea3bae97c2b410220062fa2b5d65dbea9df. 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/LVC100500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447bcc8d3aeaedd056da470d686268357dc847be29e7060e3bb6ec8e94170651. 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/LVC100500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d6fbc00bcb44fec98d5d1919d288897ba547d972b23b1b56a43c60c61dd278. 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/LVC100500060.