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 0x15fef41c343d9d9765870b634bd594328cefa6cfbe811db639156e5defa383a5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1507fe16-5c89-483c-bafd-55ad54798534.json and https://artists.proofprofile.net/proofs/artist/1507fe16-5c89-483c-bafd-55ad54798534.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 0xaf7e9dd6b2e0c642436126573900d51a7e53be7f87bf5c32b6a47a953bdc4ffb. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:32:35Z), 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/GBMA22386538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe205fbe891fcf46da9e42da119c36156d29be38354e5e9db4c6c487a400c6889. 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/GBMA22386540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2151f6bdff38d91bbb41d1ec9465ce8cee0231135bed517d80891333f05990e2. 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/GBMA22386541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df7a6c6eefc560e6c80e54d777cfa415a81d4c642442fcac341b8e6a97a978a. 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/GBMA22386542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbccfbc29d56b1ea26b6f0bf4ccd59b625791a72213100135dc016d87f7703a2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBMA22386543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc375e1c4bce570772ba25458f2c35366872d7aa4e44156d751b09631cb18c75. 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/GBMA22386544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03053fd706f948bffa7abb9f9bcfdf2028ab3349dea4837cb74cdc11f9994af9. 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/GBMA22386545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c50058cbafe9b44a919ce3e258b7f065055fe789819e9e06da89f96cc86e39. 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/GX53U2324353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a42b2ee92338515df04dad2dbf20a071b31923fdcc849b4e019f3d93d0a20c9. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GX53U2324354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9ae3aa4300671c671d50aa72730318547bb7ab61a666a6ab6590c7f229c46. 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/GX53U2324355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109822eb0c40eaa8e5273cf487036a8807229c0a21368eff7b34509ad4145f8. 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/GX53U2324356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aca459af7f6d8c039008a444cf0bd61582b6b41b1ee66758fb8bb8c4b38b31. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:37:49Z), 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/GX53U2324357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10174ca5692811c1cf718d7f05000b16f0e04d81f73ffc465e0d32ef8f80acd8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GX53U2324358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d92ff8def27b5c2a867c1de6af31b8cc9b37338461de9017907ad31ce3d836. 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/GX53U2324359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65899822319452c578dd1c1a05adf0f19fb562e9f31db0aa5f4e3e6ef4ec6663. 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/GX53U2324360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae44a35c41bb1c5e30263f825c314d9df52c4499078d03a6180e966d5d656c7. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:47Z), 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/GXF9Q2440386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f85fc69f3396fda6d0b69f3f08969452a511b254fe5549cc1788309402956d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GXF9Q2440387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d209fa3b4f694444e4ccc4169e2303bc83857d61bfddc97c47efa776fa672c8. 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/GXF9Q2440388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cc3e6c11d329bafaf4d1e8a67aa756c4f7473f06b4066c5bf55956d8276a18. 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/GXF9Q2440389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faf0c268d71ee90a8701a968aeee511f0dfe0d5e207cdaf7cee1699011c86ed. 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/GXF9Q2440390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02016bfaeedaff816c8b654a71793866b5ef4e48489e598f3f690588f98ce8b. 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/GXF9Q2440391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa428727669f2add3a014450fbd82f692c19a365f5306a7f4a6859b1c087873b3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GXF9Q2440392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978f4ee441d0a1f14af2a4d55532ac279c742783c71acfbd5d07e423e6ee2cb8. 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/GXF9Q2440393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08508415ecb2e8f9b9c92d33fa2d36932d8f328f7cce74c47d18acb4802b96c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GXF9Q2443716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37b3f923381b2018664e6ad9ec39f006c33e79fd53d978663931ee71755b5b9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GXF9Q2443717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620f2da230abef17c322748d08f4a4e651689ad50127ec06f99e38c6b9bb33d4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXF9Q2443718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eafa6ad90b2af0c08dd0b29bf6fe37d8c3d0876d28f79cd3eb3bb767481be7. 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/GXF9Q2443719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61df53bad7f564fde1316f1a8af381482d9b25863116212f48f063be08300696. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:59Z), 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/GXF9Q2443720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45c5541e3b02b4ecd275f812eabf2f248cb1732a2226d298b2724a75e6ead59. 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/GXF9Q2443721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534402e93d011648ab4c6e9636d0c1ab086a64b2e1031573dfcbb484afc12cb9. 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/GXF9Q2443722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd93dcf897f947bd852432996def68d326cef8ef197dcf0630210bf85b36e74. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GXF9Q2443723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad697a9caa3144fb823300fc66af623a4df5c0c12eb3fa0b3fe7b37d75a4586b. 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/GBLFP2522696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce89c3f55f022cd78dbc09b4de12b8cea419c20d8efe08050d6aa09cdc6716e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBLFP2522700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d35efd66389d49468ba18486639ce16ffcb3bcbe3484ead6a2c25ef79034ea. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBLFP2522701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d45c0216c969fb9063169df5977bbd3ada92754eba8b12c226abf9e53281a0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:24:51Z), 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/GBLFP2522702.