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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f5ff4501c97f6b59652c3740d925ea3c1de1a9b44be2aaffa1a12e242f738d. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/171de710-26ee-47bb-8750-47c03ab5a32a.json and https://artists.proofprofile.net/proofs/artist/171de710-26ee-47bb-8750-47c03ab5a32a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Preeti Jaichhi Sasurwa Ge (SAD SONG MAITHILI 2022)
Kahe Jalu Betwa Se Dur (NAVRATRI SPECIAL DEVI VIDAI GEET 2022)
Rang Dalwale Chhori Debo 500 (HOLI MAITHILI SONG 2022)
Dil Leke Jaihe Sinhorwa Me (SAD SONG 2022)
Sadi Karab Mandir Par (Bol Bam Song 2023)
Ho Bhola Baba Ho Shambhu Baba (Bhakti Song)
Tore Chhiyo Sona Hum Tore Ge Rahbo (Maithili Song)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdecc8093f0aa6cab893b8c37e244746d0e8301e9dfeeef3e6645e3c3e43c2e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INS7A2595320.