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 0xc4f02df06c391696ceeb7c633187fe4e92c9dd3895395b9835329c8855b22271. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab1f10b2-f28f-459e-bff9-7df05ab1bd51.json and https://artists.proofprofile.net/proofs/artist/ab1f10b2-f28f-459e-bff9-7df05ab1bd51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dekhai Ak 56 Ge Banai Lebu Aapan Ge (Maithili Song)
Falanwa Ke Beti Ankhiya Mar Ke Bolawe He (Bhojpuri Song)
Prithvinath Melawa Mein Ghumada Humk Piya
Bada Dhukhe Karihaiya Ho Raat Ke Ladaiya Main
Launda Shravasti Ke Patala Ho Jaibu Mashhoor
Bhatra Maja Luttau Ge Hamar Paranma Tuttau Ge (Maghi)
Chhauri Ke Karbai Dure Se Namaskar (Maghi)
Baba Saheb Ke Birthday Manaibai Ge (Maghi)
Aawa Ho Kadi Haradiya Jai Door Daradiya Ho (Bhojpuri)
Dhodhi Mein Anguri Bahraich Wale Karihain (Bhojpuri)
Yaad Awata Bahini Rakhi Ke Dinwa (Bhojpuri)
Chhaudi Ke Holai Kuware Me Butru (Maghi)
Jyoti Maurya Bappa Mehri Na Padhaib (Bhojpuri)
Malwa Ke Rakhiha Khayal Bhole Baba (Maghi)
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 0x3131527cfaf131e763a0111962e3aaa2a050089147e73bcd7f4c4b63b6718324. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ING212332091.
Bhar Dethun Godiya Tohar Ge Jaan (Maghi)
Lale Piyar Ghunghunwa Nandoi Raja Lawen Ho