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 0x9bc6afacd1c67edaefc6a576f762f206a78aef23b5f96e1c84c73461b32ff320. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce00d9f1-8cd9-4742-815f-7a320ff64a37.json and https://artists.proofprofile.net/proofs/artist/ce00d9f1-8cd9-4742-815f-7a320ff64a37.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Main Hoon Chhora Barabanki Wala (Bhojpuri Song)
Maa Ke Bhajan Pa Kamar Hilaibah (Bhojpuri)
Tu South Ke Pushparaj Hum Bhojpuri Ke Shilpi Raj
Tohara Chakker Me Rani Hum Sharab Pihile
Kaha Ke Darsan Milal Ab Ka Chahi (Bhojpuri)
Aawtari Mai Thawewali Ho (New Devi Geet 2022)
Puja Kare Chala Dhaniya (Devi Geet 2022)
Ketano Tu Ganga Nahaibu Baki Chhinari Kahaibu (New Bhojpuri Song 2022)
Dhake Dhoriye Pe Chati Chocolate Raja Ji (Bhojpuri)
Bardi Chadadi Y Baba Labhar Baate Army Ke Tayari Mey
Tabij Bana Di Ojha Ji Naya Saal Me Mal Pat Jaye
Ojha Ji Ke Chhodi Ke Parnam Kare Dhodi Ke
Bhusa Bhech Jhulani Leda Balam (Bhojpuri)
Karbau Court Marriage Chhaudi Rayfal Ke Nok Par
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 0x382e18247cbbea40f5bd8fc6307fb703e5293b426085a3c2539dc1ef5ef18edc. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452566269 — a six-check JSON result.