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 0x3227eb44ab67ce3b86e26ca8afff428a791ed2b9f1a5ee08229d99f060597735. 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/9db01e3b-f9a1-4ae4-8de6-23277433ada8.json and https://artists.proofprofile.net/proofs/artist/9db01e3b-f9a1-4ae4-8de6-23277433ada8.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 0xf722484ad07bb281a5d14960bb23540695b840f9fc4a14853ca118c9790606fc. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/JPVI01715120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f3a2edc3f416b562ab9736bd428114f41fc3907ca15acb23f392cfabb4bcaf. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:37:45Z), 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/JPVI01715130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ad98cb942263cced787be7292d462c3098f7cd6d4e8c9abec84d5f5a7526b. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/JPVI01715150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf0ceb1660535337d9d905a4e80e73349bfa5e6baa8f214450c571594709d14. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPVI01715160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c2a63b5f59ff709faadea631d75d823225945e60e81c46851999cf7fca47ae. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/JPVI01740980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b6770706457369b233b34be050324a0469f315e195828c9f46f733f17bd57b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPVI01903710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76b12b61cd522a668917f80739232b0060e6b2fb38aee453873a51eb1140fca. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPVI01903730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f72ce6c886b642ace5748fd5fa23eb11a31d851ed85ebdcb23ee50157a1f4a. 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/JPVI02000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9056f74c71108c340239fe83baaf49a21d54a382d4743326c0287b56a67548a9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:53Z), 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/JPVI02000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cb098ddb10ae22a4510b90eab95b1d1a6e3bb1a0f68942cbffafc42d7affe3. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:30:03Z), 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/JPVI02000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a0bfd343f782e4b8d2e188e1b1ac42ad682a50c924b491c914c226db7acddf. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPVI02000817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc423e70e0b2ea18f5eaf3d182ba731796392b1ef8bc904d40ea10bdd542e97c7. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/JPVI02000822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fcd11c34826866f1fb9ec043d6bb27f2326c6bb2e8c059bbc6ae724f6feaf2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:07Z), 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/JPVI02000823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f177d076d82a219a78a99d5eacafe76ccd5563eaaa1148bcb20ba0c6ca56dd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPVI02100909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca6e9dd2aa0ebeb144874739865680a64d7f9c86c013cc7e07a4c4878b61d0c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:06Z), 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/JPVI02103467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc662a0671792d95efd172036a533d26253f4f05f591a8d052cb535f53b6c69aa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPVI02103468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a85ac53d9bb31c4fae291e9dfc53ba8bd18d1d25ef8d1addc31d3c50461c6e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPVI02103469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7eb63bd8020e5b587e02e2f12f443d8cb3ea24d2ab6b78f8cc7876856c2855. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPR752400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcede75dcdbb66f9f9ed7af064d1a98ace48542a074828a69d2e274b0d2a9089a. 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/JPR752400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b663f62d16d1d248ece7a5258f9da36d59c99fe2cc8a398ebfdabc9db53d45. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPR752400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1f13d35bf360ce41790c032483aa4186427004b129ce367e05917d2a8b0cb9. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPR752400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27615a1400f3828429141580d2cde8198d176dee8a1b6ae103844a77e1bf9e3. 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/JPR752400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba72c932629c88e01138bf2be919fcbea896d7c5b0e9d62b746b76470ec9723. 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/JPR752400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274c51022cf70733f409d90b4cac978212e7e8cf3e667506a957325e1aa718f7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPR752500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e51148405835d7fb0b4c58d63f1373066d9a73e143ff14474f591e7e3bcf08. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPR752500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8841bcd1f0e7e75b5c73f520c753daf3e6892136902f0cf33d741d8af93761d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPR752500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cb47a8bd18351d252219cf8b4ca2365ec82a0e5b7e7d7127996d8d0270d2a9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:06Z), 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/JPR752500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aa8d36837bc519fd05357d763541d8081e379cd55cea1f839109e95a021a24. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPR752500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaadc50a93ea09d046cb126affd5691115a5ff728a22b0122102b2e1de4a260. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:56Z), 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/JPR752500011.