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 0xeaa4a1d499709c803625a4b28b783b08b6495456b257b7edb08f69497a079205. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f04d052-b336-44bc-b9aa-e34536ebd83d.json and https://artists.proofprofile.net/proofs/artist/2f04d052-b336-44bc-b9aa-e34536ebd83d.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 0x03fadf2d3481d19be301871756a9e00be637e80da5e4cc027290b8595703ad44. 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/DEC712504003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c1f7a6ee59bbe98a75c8c3a3863f87fabeb7ae9405e490588a610e653b66f9. 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/DEC712504008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863a3bfedad389370054cdb8cfef936c476d0c0a19fd0336d794f01ab1ea7fc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEC712504011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74f301babfa169e4edc85b4a0d1cd37ca37bde6a9efc41cd9b1cad2afc01ace. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEC712504017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d2195de70ee9ed57cbacfbe95f00acd50c03490b79e85a4e8a3203faaf2fa5. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/DEC712504068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bf48d88464abb5eb743017201548bf5d08a9313372200530a9b700e7ca4c49. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEC712504069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa3b9217ba3fce05a4e4b9aa1ff929451000bfdce5c140f38d6c169aece7ad7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEC712504070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0ac85e35d7b718cf6b3b9508368de5f1f834daa12cbc0f01028f953ae4d08e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:25:23Z), 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/DEC712503940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0571065fc502e2ee9472b9923745acd3d4b7a038f0fe9b87261c0ed3871a5fb0. 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/DEC712503772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf973d7182ab59d36aa476972c8c64accc33653b652fbcf8ae50ba0a796e9ae7f. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEC712503941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056b66771553b82d0f04b476db55795e6481ed3e9a0a60509a56f9db96927325. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:15:59Z), 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/DEC712503942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3909bda5173d069bc64120211e1ddbabe2233f1c837d0ba3686b9835f5d2777d. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:09:01Z), 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/DEC712503944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa748c5579490e574355f9c24294515206bfb5b80d030b3e36cd0e63b43ca622. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:40:47Z), 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/DEC712503945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a50f5dc5cafb3595a7e9d64b04ef0347049a698d3cc8a33b670c4aee9414f8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEC712503946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08024c92b0f723c980912ad451a6621ccea5019f204d1fb9782ea8532b19e79c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:22Z), 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/DEC712503947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f30b9877768b711ca494ec926e3428eba7c742301b1a72e5b155183a2c5bf3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:44Z), 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/DEC712503948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c18099781f14e7ae508e8e9ebc5a4edf75ee4f4b19f35d56941f63ca533814. 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/DEC712503949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f79cc87093a8a25592aa950668e544e256382d71d1846bb386bf655ce2c5cb5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEC712503950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ac8d95cd1a449624ed4495e1e4927297f586fd1be0098dd115e8e590e8ede4. 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/DEC712503951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94c4be86ddcd8dafc0b937d40474f8e2180e200bedd063f44d595b47252dffb. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DEC712503953.