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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64efec5a33512aa1a6cb8b7c1c90dedddcd02036870b947b33023a67d029c642. Chain 2 (Bitcoin): anchored in block 953970 (2026-06-16T16:09:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29dcbc8c-b7a3-487c-be63-ed8af6bda92c.json and https://artists.proofprofile.net/proofs/artist/29dcbc8c-b7a3-487c-be63-ed8af6bda92c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2022 ME UHE KHEL HOI (Bhim Bhojpuri Geet)
Jaaga Bahujan Jaaga (Bhim Bhojpuri Geet)
Na Bhulaiha Ye Bahujan Missionawa Ke (Bhojpuri)
Dukhiya Garib Ke Sahaiya Chandra Shekhar Bhaiya
Chamran Se Je Rangdari Batiyai Oke Dhas Ke Muaa Deval Jai
Kuch Na Bigdi Chamar Ji Ke Khali Bhokat Rah Jaibe
Chamarane Jatiya Brand Rahi (Chamar Song)
Akbar Pur Ke Pani Tohra Soot Karata Ae Rani
Kawan Sala Bachi Ke Jaai Apna Jila Me Boli Ke
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3725de4ec51c53c011622e897ed76f2fdd67292a06e2c2220609a2a89f65603a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ING642500562.