Karan Singh (born 9 March 1931) is an Indian politician and philosopher. He is the titular Maharaja of the princely state of Jammu and Kashmir. From 1952 to 1965 he was the Sadr-i-Riyasat (President)
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 0x4e8fac0cc286cde1c8ae91b0b16a5c105cad913abf24a022a921f9aa54317621. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/667b3166-8271-48f3-9733-fade7218045a.json and https://artists.proofprofile.net/proofs/artist/667b3166-8271-48f3-9733-fade7218045a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.