1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x383d5518dd2bf68c9326c47328a8a92439afc928bdfae56781feb595eb98dc55. 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/a69597ef-8594-4f18-b2c7-a416e36891f6.json and https://artists.proofprofile.net/proofs/artist/a69597ef-8594-4f18-b2c7-a416e36891f6.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 → block OTSBitcoinBlock must exist at that height 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 0x4f1740ee68c78ba2fbe3dc5bc5d7342dd2fc88afc7944360b7f7ec82fddd7208. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/QZES92257735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f8f53542eca805049479e6f721a5f631db2685107b0897adb59809a737f16c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:46Z), 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/QZPLR2332698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01c633fc1fd599bcb72adf99f8a62e1145eda112f6cd7413ee05a387ddb892a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZFYZ2490957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829e59396ff213755b0f50dff66808246f6987c1a646a4aff84d5dd900c400de. 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/QZMEN2449512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0470ef2cff7389cdeb23798c290a61ea498799e7dff40de195bd8a58f6b0b0. 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/QZTB52489028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81945c226f7f72c862c00de3e1e70de4a4275b811f45b1eb4610ad44ee61c34. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFS2457045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6147c0562997f553276c284e5f4a3916c6d57a4ae0a41a2a8f83648cb21734. 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/QZK6M2449726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef59145b08756413bd40a1ee10d48812f329edb0a9ff2b7ae2306245e6f80e8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7L2489660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d7cf692bd6d23224f1137f397ff7eae8c967cf13294a00a260d64ee0d65ada. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:41Z), 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/QZDA82512176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d29917dcdcc6640cd2866c75cef37df551828608bc6e850f4045a1fa6b9747. 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/QZNWV2513375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ae7affbbdad56e6729ee70337ec23017c6222e97f928bcd72cfebe47d217ba. 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/QZNWV2513376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300971acf6002382d3f2e9414fb1e2daf555bb31068b7e09a9195e1efda0839d. 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/QZTAW2538719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd2e8461ba5542c854b1497f927bfa7f36b358d22629b0b22a1427e64892332. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN32495845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8835651f78a6b31dbc7d2b416c2582b4620cb900623caec1a9c97d18204dcd2e. 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/QZZ7T2540716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834835977c8ba8b0c798fa16ceb8ba4c8f52a1b4fb34b956afdfada437f026fd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US6QR2300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37011c02fda4776896d6228e2ac48922c849be05560191ff95728616a4e4c86d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US6QR2500004.