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 0x1d98b10fe22d95bd30c81f58c278ea1caff88288b9acdedfde9e722ff7c35bbf. Chain 2 (Bitcoin): anchored in block 953950 (2026-06-16T13:35:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24f4153c-352a-437a-a53e-232e7f876fbb.json and https://artists.proofprofile.net/proofs/artist/24f4153c-352a-437a-a53e-232e7f876fbb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jawani Carona ke lahar Bhail ba (Bhojpuri)
Bhail Khushhal Bihar Aavta Tejshvi Sarkar (Bhojpuri)
Lalteniya Vala Jhanda Fir Bihar Me Lahrai (Bhojpuri)
Bate Natiya Patiya Bahara Me (Bhakti Song 2022)
Naiki Bhauji Nachtari Lahaga Uthai Ke (Bhakti Song 2022)
Holi Me Liyadi Vaseline Raja Ji (Bhojpuri)
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 0x5b4a394b88fbce627f608efb886cb58404bff3e1b7824191863253ed6cc9fd73. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ING642424797.