thumb|Aishwarya Nigam Aishwarya Nigam (born 4 July 1989) is an Indian singer. He is best known as a playback singer in Hindi films, particularly for films like Dabangg. He has received several awards
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 0x88f75bec80a84a1193a19045fe5eae9231447629888ad525a7705cba5d50c2a3. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9596d252-0042-489f-989c-5dc190342b32.json and https://artists.proofprofile.net/proofs/artist/9596d252-0042-489f-989c-5dc190342b32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).