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 0x923c26b3a9023d7ea7ea34a6f53fb044154f9afe2a54336533dd2c7c39a2d4b3. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2a93749-d05f-455e-9b9b-dc2999667515.json and https://artists.proofprofile.net/proofs/artist/b2a93749-d05f-455e-9b9b-dc2999667515.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Charo Oor Gunje Mai Ke Bhajanav (Bhojpuri)
Puje Khatir Dilva Hamar Kuhakela (Bhojpuri)
Devaghar Jayeke Mundava Ban Gail Ba (Bhojpuri)
500 Lemg To Rat Bhar Denge (Bhojpuri Song)
4G Ke Mobile Dihal Kal Hogael (Bhojpuri)
Banal Aata Ke Loi L Na Toi Toi (BHOJPURI SONG)
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 0xa6a0dcf443624c72c2cccb366474252262257947f3cb5f8085f28e40ccfec618. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:41:20Z), 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/INSF92403604.