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 0x4cf672d431811629ad8c08d8e860ba987efc9509228440db0078f9b01561097a. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40b18edc-da0b-452d-bc0a-b389e7f854c4.json and https://artists.proofprofile.net/proofs/artist/40b18edc-da0b-452d-bc0a-b389e7f854c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kaise Kahi Tohra Se Sakhi (Bhojpuri Song)
Ailiyo Barati Tapa Tap Tapa Tap Aah Aah Aah (Bhojpuri)
Mar Jaibau Khake Ham Jaharwa Ge Janu (Maghi Song)
Chal Ge Loverawa Melawa Dhanwar Ke Ghureybo (Khortha)
Chumma Leliyo Maiya Ke Bol Deli Ge (Khortha)
Dhandhawa Tapi Ke Jiyo Hiyo Tora Bin Karejawa (Maghi)
Jawan Maja Maliya Me Mile Na Gharwaliya Me
Khali Phonawe Me Dubal Rahe Hamar Jeniya
Sokh Chhe Kala Thar Ke Saukhin Chhiye Hathiyaar 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 0x9155402fc50f0fc54759df7a9b7ce49e51f204fbb6996ca3310bfd068585c8af. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IND732549350.