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 0x6821a9e9187620b0839be3f40acf298dbc0675a2ffd9248741c20143743d73c1. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebcc7b07-4582-4523-a43c-78d98b11ec11.json and https://artists.proofprofile.net/proofs/artist/ebcc7b07-4582-4523-a43c-78d98b11ec11.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 0x7531e8ed7c83e3e8e8e560e87b3ee84f9b54fd19ad725df270d2b8364d77391b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:24:50Z), 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/GXD7G2584768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa6a9e77692fe852a6567c0d4a03c7bf989366f3469c6dadc434baf9302e0f5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:36:33Z), 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/GXD7G2514396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0846fd2ab95734f921e4f6cde5a7784eeab076cb56d15b71f273582d0c6def35. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GXD7G2586620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e10a6600dae25f7f7043e2ab4f4bc69c6ea02ce1bab3e4a1c0cf6ce1cf6f15. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:11:54Z), 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/GXD7G2579398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b186f9beb9f3fc6d2253d40b4c7715c682f54645503bcd30f10527be49d069. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:23:45Z), 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/GXD7G2585323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed06dfa9f33b56cf39d838b0d58f4178b83a30a6a57f53ef576208427455a6cc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:58:38Z), 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/GXD7G2525617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c86b5cb955136aa5c0ccfe04cccccc79dcc9017f5a718af83046bc9cded806. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GXD7G2501033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10585afa10692a9b2c23ac54ccd81cad0e871ca492bb196479f726b7297c9188. 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/GXD7G2563932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9fdf97d0369ffa0a96e50638dc608edd06b9834564753a56cf52d434d2421b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:23Z), 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/GXD7G2505787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3183a874a71caa9a8dff1dc4acdd0e52c5a5468e118825d43c72c24712fc62a0. 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/GXD7G2571835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3923515ebf60c166ad05aab3f025bdcd7cfedcdfd794848e93fa34f251ce87d7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:03Z), 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/GXD7G2576509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39ee0d5eddcc2a7c8d0e95ba056563b0ec34f4fa1767ca75881bb8a3339bc23. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GXD7G2519607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776fc26f53d7fb8db6ad5df64623e5b398f2703c983ccdbe1d58d7df0f05b791. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GXD7G2502690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4341fa5dd221fa57dd74920f7326648a78c856ec272445d579c44cac1dbdbd7. 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/GXD7G2562019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c487ab52f60044c19354673f151c7d696dbda19179432f031f14518cfee233. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:52Z), 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/GXD7G2561236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589608dfa641af086f5732ffdc4c288d89e98d4e45c4eab9d46e80fb849cb14d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GXD7G2529930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2538c7e559f5994f39ee0e3b73527cbba24e665d90374212e6dcecc9481ba3a7. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:29:17Z), 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/GXD7G2573730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf325eab80a47f34a3fc0df6beac74bb4ab91cb53936311bb162817651f43a6d6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:24:09Z), 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/GXD7G2583115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf932b804a5f98c1441916bc2b7b419cd60124be0d1b8d595d9f3a9ee0c49856b. 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/GXD7G2500430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa835d56237df66804919a1346872fb70d25db3fffbcab5711d763a44618f396e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:46:34Z), 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/GXD7G2589331.