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 0x089c41d92ce9190a8d04dcdb5d2785a2e2e3bb57ba2b02d236713bfc3af1256c. 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/6971ecd2-5b62-468b-b560-c2ed1b683e7a.json and https://artists.proofprofile.net/proofs/artist/6971ecd2-5b62-468b-b560-c2ed1b683e7a.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 0xf065eb44109932c0305a1e1bb465a3309f1e0c3a4cffa94c6b2d7d8d7ec34ee2. 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/QZDA51831575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721a4d8413d828a00c49fed1cf4aceb4e2e0220eb6d65d261eb1e06bea1efa3d. 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/QZES72046143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa705e7d24b383b5132192760c271798e71e8a1b019724dad944291224caac73. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES72046146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0de43b2dda8dd956f6c2802205cc41201a228bcc0295f5807705eb321a6139. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES72046149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85e1c760b0848d6e8daed99016c2932c78857935107901c858a98041fa91508. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES72046151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d8706b49b18bfd5127c8a2012d01f7215167bd585ac053c8058894beaaf09. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZHN72033170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7422540ee6c2ec4d340723b26c95402af1eee65b06ec3a7f9a6646a2e0311b. 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/QZMEP2113745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c45fc688c44b626f32ae047ac856ce78985a9c5eb59f9460c179d5fb7433f6. 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/QZNWU2175064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e26fe3e151994bf13d25fcebca60ff333f441abed268f703b1807e48ec21d3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZNWU2175065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20201ca6d78575bf0e840f41c2d7a4349235c2a6fcf5a01ba80e928e619adac. 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/QZNWU2175068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd687b51d96f7b172d35914e47358ab6122b0ba2e7038e9cff4550063bb9f392a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:22Z), 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/QZDA72210456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12db35ddff05a75d9f5a8d223114e61592e52129cc6574f4864af7a3607e500f. 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/QZFZ62395706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069d9b20c91d3cce194eae55006ef655ebb707da00e3292523ba22aac15eaa4a. 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/QZES62424065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8415a3a69f186daeb50ad3046c1310ece8a27666b02c5e5a9d74986779c355e4. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZHN42473813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bf19d8bb772d16f121ce221adde87e59c94dc434c45df17690efef3c8a70d8. 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/QZHN42473814.