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 0xa4e59cce43b6be95ba931888105e52bbd098d5008ea4856bf02ccf2434f19af8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4af8f5c2-4b33-429c-9ab7-15d3e1d87c84.json and https://artists.proofprofile.net/proofs/artist/4af8f5c2-4b33-429c-9ab7-15d3e1d87c84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yadav Ji Ke Dudh Dahi Khaimhi Motay Jaimhii
Bas Geni Patna Sahriya Ge Jaan (bhojpuri)
Mile Tuhu Ahe Chhudi Hamr Bathan (bhojpuri)
Bhola Ke Daya Se Milalai Sunder Sajanama
Hamra Girinda Pahadiya Par Ghuma Da A Saiya
Aawate Baisakh Mor Bhatra Piye Din Raat Tadiya
Lalten Ke Lahar Se Jahjiya Jar Jaitau Ge
Jaibo Sasurariya Rangba Bhatra Se Dalbaibo
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 0x6f6a402235e2f31174f840058c02231bc5acb05dedb8b2044b92d678ff9c18f7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/INS7A2629252.