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 0x25a6dfece2cab047cea2f3ecd144c59e95d426f97fe970e798f0958fc2646aed. 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/c8a4b3c6-a7de-4f0c-a9ff-0fb6b355bea8.json and https://artists.proofprofile.net/proofs/artist/c8a4b3c6-a7de-4f0c-a9ff-0fb6b355bea8.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 0x8297665f5d1a26e01922371fe4a3517a1c9ea87f667a69de406145067fdc64a4. 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/QZES72156587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa390bf4059fd0bc79adc523761205afa86fd9c194ea32376da3d488eeb32a1f7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHNB2248028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7134d1d941ddd15296286ba472ee4d5fcaa56a36d70cb82c23fc3ca4160228c. 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/QZNWS2261967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9da57aba4eeb296cc6a5debac91afea465397baf462e7b8d8f88446257ea832. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZNWS2261968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd564c481cfec28acb9f204142028e99ee4867198b9176a04c68e39515464a37f. 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/QZNWS2261969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5460783005dbaccd9bc3c3991e51a8024ca10773e8e4d6cc73e3f8a9aa9de5d9. 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/QZNWS2261975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0286c3a44384944058070b285b403b922f6694e5b439415b9c49bcc3490cc9ba. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:53:07Z), 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/QZNWS2261976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015b034a8dc7788fdcefcbf19bea024b7b1d006a490ac7e9e130abb434b9cca0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:51:50Z), 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/QZWFH2459733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99a9b2d894406c4d69d90477a4ab37ee896678b616714ff1e4628744318abc7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:18Z), 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/QZSYP2514729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781e67a5fff8d740b7887d11fe91c50ba21a4eb03e5d0f4e1893ab7f05337d72. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZTLA2571932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f487831d06bd5db6ac5b907d1fd00294323e46dafc1b128d456449b6dec5994. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:59Z), 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/QZTLA2557143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e86d7bada028b8909a21599ba5c339b8ec1b4c26ce4b32ecf541fc71992f36f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTLA2585096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76536069cd7a5f97318d350669cd987ca30ad63d6ff4b35bf80ed3751a17196f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:04Z), 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/QZTLA2589420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60906237f72d716a7d568db430d538ecf14ae2cb957eda1f1a75f87da5d17dc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTLA2554417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b834943670078b350a3faa9a2b7a8c0a3e87c4d4cf38ec52eb2a4c396ac1e96. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTLA2515862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d97de8e60196bb837d89d28e4011ddc2877e956f64683461305fc419c8311e0. 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/QZTLA2573434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb93ea974396e661232f4e66cd0a7b9d9d8e812451446f05b1b8c51fd8bf868. 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/QZTLA2585108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f13d4b03ce52da3a6820aa400159b869c9509f8b9db981710ef5521e0eadfea. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:50Z), 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/QZTLA2510822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5880793ccd883efa0aea329169935d0fc5466748478441349228b8d426aa4cb1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTLA2563167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a9c741a6e9fcdc3718e139ff5abba33299c9615f87662b1f279a58eec0e032. 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/QZTLA2545953.