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 0xbc86ee915d97db09ed398631c489974595971f927fbafab5cb95f53d7c241e52. 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/ed15533e-221b-4873-aca0-a3725236de22.json and https://artists.proofprofile.net/proofs/artist/ed15533e-221b-4873-aca0-a3725236de22.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 0x1fd9a9fc6d17f26a96771c142412bc8df5b57355ffddb47c61f109e4ba9c36b8. 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/SE6A92369196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b83b2d907e139ffa2c1d7f6336bcb5494e9342c34f6571bbc3699d97edb99a8. 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/SE6XX2384808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5171d70f2285bcc1775d094a5a0d80147c18501e3a8e2291ed18ad082fa396b4. 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/SE6XX2338847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b9dc9b536e2ef34f12d9e3314fdf3c9f78c960d38cafd0873b508ee81dd06d. 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/SE6TI2330690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4128505b29e3544b17d06b7cefb6680b47f81179ede39d0e4ba9bb885035dc. 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/SE6TI2345086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55273c07095699dcd91cb65421bd346457e2d9a0b13cb37a326d7cf590af3a4f. 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/SE6XY2343370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d7c6192e19f1f55800c523f8aef2c3de85f29abc9a02e40c9df0aedff889c6. 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/SE6XW2395083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1db5144d85cc4e7f843a42902190462555a1c046d05f66b9dec2c8f2e6ad8a2. 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/SE6XW2398612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af2f11422d8c509e198169c0b103e9092f445ad056366e85305889e88a06e0b. 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/SE6SA2376344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698cf6674d2f070243a5e18cf8793055b61e2ea6b24b3a4079b3de63ba8d980f. 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/SE6QE2377492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2376e123b5c0294849a5446384b2f811d6f897fb9dd41e11bb1f2d1b083949. 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/SE6SA2317070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7507d89a1ad805fe3b0f6849acedeecfda87bb13c3d2b9e774a65dc763f2dd57. 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/SE6XY2342428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be0f00d6bf2dc5e519200f3c002a4d268d124ee4bf64de0a9f067f5407024a7. 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/SE5BU2358308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399d531557c4a65e2b2e350100a6c19c2e8f59f17a7b0ccf14febb69a10780a7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6QE2335276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04f0bfc9cfda0e15f18144cd67a999f6b9e497567d02245e3656316e5f68ec6. 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/SE6I32385406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22f8aa5e617722866e2a569ca22a6e48ae55b48e179836645253da516eb2d02. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6I32346752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8eed40b7f4a6ef5ca0af8aa0efebd0741515968fc332c00cb6a9fe28101ad31. 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/SE5752330350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5708cdf185d9141a14613d303d2ad01e0da96bbc9271acb32b20f816c332676a. 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/SE5752310803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6e8610d7c480d147b5a01df113053799d935a90e2c7177d11cb9ba2a741324. 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/SE5BU2328232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5429c2909c8d707e8923201e9dba1c195e3288e5f27137e8f6e7a3a27be6fe35. 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/SE66N2268315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fc2bab4eca7fdc02f214bbd5c9dd4f7c46b5b9e81eb13005efed24c5426774. 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/SE62M2261892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7f5839847bd4d92a997066297b3575bebd788bdedf59aceebc084a7127025e. 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/SE6XW2212581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf046be66ca36ea45df3566cf9a9d87ffd55045351c0f25486d2b172a469bc3bc. 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/SE6QE2250893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a567cc0da73943ecd74056ed5f795f93ba0e7941eb06bc6b6e8648aa80d98b1. 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/USCGJ2271644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d696637d05abc4838ebbfd9a4d87f828b07c9e23748c869a261eed458a19612. 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/USCGJ2256148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa011c39d0f9712a63416cb7302bb42c927492f7cff0089a9d6fd8b5c7b3678aa. 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/USCGJ2225855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdef7e6d23c7801d452c03bcc83d58a90c06091e3d79fb31c84c3d533cc1ed5. 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/USCGH2282072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa343dc1ae92fb3e12f7efaae0682623bf7416ee7a7d4c06e3cab304dc23ccd5a. 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/USCGH2253004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1be08ffafc1274c34df227f66e04a11d03d894ceddd5d479a6db76cbb3cf98e. 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/USL4R2163522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2fa907e830906c3e4f0f65779e7e888ef7613aed9e02e0a4b0cd4e895c8c44. 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/USL4Q2132608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78492d25a34aa72b3a2b99c7c47b3465db813bb61881ddbd956763f95eed887d. 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/USHM92133338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093baea889979725e36adc6f9cd9ff589c7d2b6ed79c896833b7c875e7ca6b06. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE62M2329682.