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 0xe23c40b0502cfe1facd184b82e8e0f69c5cf0e514b385c40bf8e892f97550c71. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f85e0c96-2589-4559-84d0-d7cd21926a7f.json and https://artists.proofprofile.net/proofs/artist/f85e0c96-2589-4559-84d0-d7cd21926a7f.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 0x27d3659da00a4b8229983aad753fa5c1831bea52ac2779d092cd9cb3ff92cbe6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X41975447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba06ffc2d162a2caf89dd943b4074be8f7d41ba955e3e50b62d32b97c084a13. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:28:27Z), 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/FR2X41943952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77fb4ed32e58872a22594e53a1a662fe431327ef3931d932363a9bd46131b0b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR59R1923561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f2e3976110fcbd3ab5c665c240d13b0631060b6b9540b50a10af6a8a1d002f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR59R1991141.
Kabbik Kolpona (Lyrics: Abdur Rahman Raziv)
Shesh Alingon (Lyrics: Abdur Rahman Raziv)
Obaddho Mon (Lyrics: Abdur Rahman Raziv)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0b66ee123387c40a6f349829211fdb3d1fc7bb443463c2222b6daf81812d37. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES62015309.