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 0x2c9bda96aff9da734b3c0167e4150283f21ce45c00ae59348e0b294ba2516387. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0e5f33d-b897-4e58-ac9e-562242038e61.json and https://artists.proofprofile.net/proofs/artist/a0e5f33d-b897-4e58-ac9e-562242038e61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dahejwa Ke Naam Suni Fata Hai Karejwa (Bhojpuri Song)
Yasoda Ke Gharwa Sohar Gawaye (Bhojpuri Song)
Holi Me Choli Range Ga Sala (Bhojpuri Song)
Yadav Ji Ke Beta Se Karle Pyar Ge Chhaudi (Bhojpuri Song)
Tiger Jairam Mahto Ke Charno Pranam (Khortha)
Naihar Me Yar Dalela Shasura Me Bhatra Dalela (Bhojpuri Song)
Kaile Bari Tohre Naam Umariya (Bhojpuri Song)
Dhobiyan Ji Ke Shan Banawale Rahi Baba Ho
Garib Gharek Beta Lago Jita Diha Go (Khortha)
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 0x89c363cece5e0b4f8a79954a321902cf3c39b408e7273bffac189805c0ee8244. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZZ432444392.