Subramaniyan Karuppaiya (born 25 May 1939), known by his stage name Goundamani, is an Indian actor and comedian who works in Tamil cinema. He is known for his comic duo partnership in Tamil films with
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 0x4d75bad4fea1e5359f8fe9c7654204fc3f072f4713aa22e678b719bbc8f83d2d. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fec2f1d9-5a19-42a5-a5f9-d8447949bd9d.json and https://artists.proofprofile.net/proofs/artist/fec2f1d9-5a19-42a5-a5f9-d8447949bd9d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.