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 0x11648edb12aa1a720627df66b574a37c9028b7e6e12e8a1b4628a8f3c133401a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7691731-7b79-43f9-a5a0-04c29a053f95.json and https://artists.proofprofile.net/proofs/artist/f7691731-7b79-43f9-a5a0-04c29a053f95.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 0x2df11868484a749013513509f61eb1015ad15f3d7b2f43dc3e38754b5bb0c58c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEAR41961074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fd9ac2bf27d4504d3d2ef352bb80b863996a5fd5c9b645f42800c63d2840cc. 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/DEAR41912161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5ae684d8a5428cb4d798b40501713d2a36a88ac19658e94b06a85584d7e93e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEAR41990355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3dbc466a7e78ebebf8b313efcd0a7937d515f3ce76e6a8cc694c206972d0ca. 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/DEAR41991291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c724658d0fc38d9c37384b5c19066300c4a0f69681339c32fa98366f3b0068. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEAR41910447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0d36205a9dd2baa6190080a0479ec5d08174beae8a40b1c729eb34ca5db070. 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/DEAR41939580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe3487f28f18b18471e3714413bab54e2bfc9a1810605f5b671669fa11b4ef8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:23:54Z), 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/DEAR41949844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c66121540c54b49ea97165a4b6850520f2ec57c7b51ea371f21d7aeecab97a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DEAR41961438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fae947e62e4ddb2562702b45da3856029e0484ebe15eee323b635f1418f7c5. 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/DEAR41959906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ad5ea83e1ac65bc51c16a430e350253ff3321440a91b77b12a2fa61c26d6d. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:42:09Z), 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/DEAR41967996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd3f79dde6251acc9720e57dbd06e277d30959f8d18a4be3b1009d250520b37. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BGA472405625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbded08a62774b4cd4806d295f49ae23508c0b9bdb3faa81342626cbc8d255cab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKXN22444130.