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 0x0636c635a78f4b961c1eca7bd8d094299c36095cc0e3be3f610465cb122f74a1. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b02312e-d5c7-4417-9d0a-6702d18db760.json and https://artists.proofprofile.net/proofs/artist/9b02312e-d5c7-4417-9d0a-6702d18db760.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 0x5419f833a6d27615911bb2c3ed3a8a366619b029d42e0208d9f4856177143150. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:16Z), 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/QZK6J2312359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27902ba7dec5c135cbef4c4a61fd62379e480b563593c01d12719568b40de28d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:48Z), 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/QZPLR2314759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c6613cf3564533f647ee5b1d4f77f798c465a70ae34d4432dd99f4115fd233. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZPLR2301746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad3a4993f23f645b836dcbd1776b201a147f48384a710c95733db00e3a29907. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPLR2301747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f640612542c62cfae7c75501e38dbb915bdbbe724ea242d4adf5b08a5b32211. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZPLR2314760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8eb58263ecfa881edf4aaad3102314ef439f0ed2d5ce78bc27b9c20a05efb1. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZTAW2394838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4280c34417fcaf86a8148e7c4785c1369c8b82de3ba48cd907e5d710ebdbad22. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAW2394839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7de733736f934ee21d4f525eb4e1c7a11dd0a396937c980e4e538ca31743862. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTBF2332495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf33822fce05e682e1a83dcea3d22776a2735a056dcc207d5a7d0e750253bd6. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZTBF2332496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7970c1744171575f20673ff5ce854f84afcba2cd06d5d1dfd882e9a36605cb01. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZTBF2332497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0738da58e3acd359eba8487cf594056b25b1282dc8953af47d83bd41daa8ac. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZTBF2332499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8983044345c96eaaf4be99545cb7b1b5b9199cc36735e80a65fe6689dcab36f3. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZES82442690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615b8b21be01b22a5f63128ee03a65d5c72f6fd12f9c6425c582e373940be7fe. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZES82442695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660de880ecbe98629afd30c5109773bb273352decd714555439a17ade9d612ff. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES82442694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb672534ed945de5e56c6b5cf6ac4fbbbb1e95d7c86776f47011e861ff5d0a77c. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:25Z), 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/QZES82442698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e324d9b4791de1a7cc16bdd0d6b8a9e163c86cbf9c6f64bf24f63abd07a278. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNA2425204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8330170d80611bc9b8e3ca5e0260bbff658de8978e270213c5b9bfd66609a510. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHNA2425205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0093e48812e1047d4950000efdff97e1b0ac0701a4648420685c2292817cf0b4. 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/QZHNA2425207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c61ebf81a3280a77ca24071cd153f28098ea2696d9c002e103149468e546486. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHNA2425209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcce795e798aeca4d3fe6263c6cbb9d0d358388d36dcd1c3ca3fda12dbfe035. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNA2425213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb29818b6bf774940af36e43b0ac3c7fd0ae2564b37179eff2a318f0406cbe5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZPLS2483799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fd34646881547869720e735e6a9132c854292a7189df7c7f0719666c53067e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:31:51Z), 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/QZPLS2483801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e52f0542ae218926c79a846dbd0ffc899438516c5f7c4a878455e1e399495f7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZPLS2483802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a544fd89507823e16be6dd271aa0e54cf7667d7e39bca1b560c3dde43a6979. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPLS2483805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99049997726cca469a9d969d800dc0fbf2fcfcc11ec6580951cfedbca8ec5564. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZRP42484737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f4121fe37d39cec2e4175005a519a73a184e0cf73adcf2cd85ba42fb41291e. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZRP42484738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6d0758ad3691d7de88d7c4b4a15edac83c2f1a353239813eb036da076e2018. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:54Z), 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/QZRP42484739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a3962cef42f3619d9645ad0c4bb18e7ec8b73383bcd900ea04a56bd0dbca4b. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZFZ72582570.