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 0xb0476aa13cc32704e20caeee5cd13612a8e94b9674f912ad1a7e8e2e7e9a3d93. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4857e5a8-9121-4882-baa6-29879b1798bc.json and https://artists.proofprofile.net/proofs/artist/4857e5a8-9121-4882-baa6-29879b1798bc.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 0x24527fdac8307789815ddbc6d19af72a5c927b3c608d750c4391c0ed26fe91dc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:10:04Z), 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/DEA340300991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aa9e57f89398803ea451119c7baddd62daa5725dbbd101f866331fd6a6d263. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DEG840500220.
Musical Society - Rocco vs. Bass-T Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114e780db28edb94dac113d2d69907525363a3235143e8f9ecc640ef985a8a38. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEG840500223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4120fa0a3cead7e4a6ae51ff78d3d0a21f1dea2ca4c032463584df1c2487a6dd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEG840500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4120fa0a3cead7e4a6ae51ff78d3d0a21f1dea2ca4c032463584df1c2487a6dd. 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/DEG840500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cd4fd8661c58f0894aaf5097e5cfd1e7c45e75a06a61fa510ca1ef73918b28. 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/DEG840802130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca093b394bf116752c6096dae45d92638a68281f7c4178f93fe8e280e22c9e59. 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/DEG840900570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a7789ccc16ea3ffeaf0cae14c47114ad4ca3dfe6ef0ef7f58ced15ac4d7223. 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/DEMP61000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a95263611d9fbfa1ba6927f5a7ff656df76ec1923f59daafc4c37b719db2c69. 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/DEMP61000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c80991ddc72fabfa2edc2a3fd437dde2167bf44beeeb249f9e0092d15f8fce. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DESD91300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e960f28e6c8d0457a4dad181048d43c7fb486e504136204381242b41950ff19. 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/DEMA61902640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1462966fc923bb777d14af7514adac157a393ce30286b5c3a7939b8c5b0e2230. 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/DEMA61904070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109851c2d87616ef871de94dfa846be94ead4a5c99c01672079ba5a1459b32da. 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/DEMA61904071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3159c8828c64204427006ef6efa6e22cfbcd1c75fdf4f92eb2b51d364320ae3. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DEMA61904870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b5470181aaa5804080321f8c657715feab557529a17f1b25172717046248b7. 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/DEMA61906896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a02309a132ae2582810952b3a56efb66e94778d716e8d9d24e1a5117c0c9f81. 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/DEMA61907415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88057fc5b07701a1c4b9f8f61e80a6927cc782f14109c9c15bf693724bf1cfb9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEMA61907590.