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 0x7e67c544b10903ec069b9968ed258e8b28ca99a42a3e9a49d2be8311257922fb. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf3aab96-3e4c-4c76-bc1e-4f3ddf2f5186.json and https://artists.proofprofile.net/proofs/artist/bf3aab96-3e4c-4c76-bc1e-4f3ddf2f5186.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 0x8d5ec9eae4f5246773e415a548d27364549f6dff496416f819be1b50905585f7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF410500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419f161792fc072ea1a8cae78407fc71c068a73c92c199ff383952f347865d4c. 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/ARF410802084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcff91cb59eeccdf00c5c900d031e7de13e013935ddbdb5dd91b35379f9fce0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF410300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf603ef936cf09b37068a0e845f280eb2a48408e78abaafe4f4a9b7543dc0a665. 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/ARF412300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a90c67bf72dbfcca39f03a24331c357007556f02b69e74f367ce58781ee830. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF412200242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec7d2e5ba7153e1139910639a1c4bfbd67e50a21daa357a7b57957dc0ca2323. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF412100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b39530bf7a51efb9e748d35607e3c8fbd6605cdec17d9b0111630bf1a779a5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARF412100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3b3679608b241f5301595e269c3eec316f235afb0e5b23dac5cd1fc6951a4b. 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/ARF412400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2121c00939d7e310946c5519665bcbd603e73ac42304961dbb9121952eb43b8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:11:11Z), 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/ARF412400432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389bd735118fecb2af3cd5e4d2e4592c20641fba5700066a29ef4e36eb8edc1e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ARF412400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c26646b49463889110ec8b59044d46278c9ccc764a465ef28d87736f4c8ec7d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ARF412400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10277c7710cabff2bbb63ce9092ba9d68cd35e82c168b8e2966763567e34b3af. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF412400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a958bb343616cf7492dc4ec52aa69c747581fa45e0bcb82617c664426c62aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b7a3a74823fbe100b36d8cb67ffe986b7857941a489186773a3b1a0dd04fe2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF412400494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4a8c15b40eea84f78e6e94f22fcd4e2b48ef4f8ffd010866fc283ff9144e28. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF412400495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b634941a61ade436ba24ac3f5702340a707148b85dfe41941097e5abdbf4a62. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF412400496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a44e2a672316058b678964fb681927e2423594fd255617b0d2fb90bdc8f4bd2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARF412400497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb38869625ac170a29e4dd7205284144a8bf7ce1040c11f93cef4cd33155e109. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF412400498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffa29cdb5a2b37ca5bd5c6a6bd237bd0ae73b0171eac085dca4a4fafb896651. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARF412400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f32f6ab63a396fea1f403aafa21af481bbd69f2b6d6f4e2366d95ff7e363cf4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF412400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39394786924b21c28447588aad31d2c6f1e1c0bd6cb74113ccc28fc3b6d8572e. 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/ARF412400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78447caf3c354a7621789eb85566365fc04a77abae203edb1b64e447b0f6876f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF412400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa713c6934bef01555d02a35687ab9d2805913e119af972515b75defb82afde2c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARF412400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80f183816e637b3bbf21e730b44b9e293f68671cceaa8c56cfe7d81391ce393. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARF412400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1582990be3952883c9f4533313d5788c7e056c25e3555463c0b02cf760aed849. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ARF412400454.