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 0x5d0cf3fd9bcead52ce612682656490a799cbdcdb9cc05553ced2358a76cd6194. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e7d0f27-d30f-400e-8b58-73a6814642a2.json and https://artists.proofprofile.net/proofs/artist/6e7d0f27-d30f-400e-8b58-73a6814642a2.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 0x922a5c5cd7dbb526d94f1e58198186d56e87097efb4498b56e2caa6dab8c9edc. 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/QZMEP2318607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce53ffb06b4648d5a1a924fbc1c2c4fc1b706917b91d92f136cb9569ce7b0aa. 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/QZNWV2417942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fa549fb78e6b48c3923a5c8535be9c3f31ef61eb2b68d6696df68b9a13beb7. 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/QZDA62463807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a28ed4607c2a1f0e269432bd84c53660c43a1425913b6a6fd65fb88c6bfd011. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTB62378305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00217225d34b13368093a4699813df4221e776428a13358ffbe8ffe56e54db5c. 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/QZHN32337467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a01fba2614a21d92218cd1c7f55aaee75299992aa2117b605b17fad53c414a. 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/QZNWX2270605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7d6d301beb7576371c73be4dea236e057b16a3c7b26801700cb59cbbe7c849. 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/UK6KW2100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf84d383821867feefdcf9dc62d54070dd54c46ef3ba3a290bf528d2516fb090. 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/QZDA52161843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0e612493d9851ea9a04c9dfa5abea5421307732446f8208d84a5b423a8d3ec. 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/QZFZ72015408.
Thirst [Radio Edit] (Arielle Mileski Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c7da290522ff2f17218b5e7248351bb863cb659c7391d35cd4d049feb1f906. 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/QZK6G2546289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce53ffb06b4648d5a1a924fbc1c2c4fc1b706917b91d92f136cb9569ce7b0aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWV2417942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fa549fb78e6b48c3923a5c8535be9c3f31ef61eb2b68d6696df68b9a13beb7. 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/QZDA62463807.