Umayalpuram Kasiviswanatha Sivaraman (born 17 December 1935) is an Indian musician and exponent of the Carnatic percussion instrument, the mridangam. He is a recipient of the Padma Vibhushan as well a
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 0x3c40634a9bb76eb45a9348c2f14a4de6fde7193e39f7a07bc011aec87244450f. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5294a4cd-14a4-4082-b9e3-004dce2d16d4.json and https://artists.proofprofile.net/proofs/artist/5294a4cd-14a4-4082-b9e3-004dce2d16d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).