Vikramjit Singh (born 9 January 2003) is an Indian-born Dutch cricketer. He made his debut for the Netherlands national cricket team in 2019 as a left-handed opening batsman. Personal life Singh was
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 0x4e69bb83966d29a09f97816e0ec318074524cfe1a95a9e5f5a18312d1d3fc6d9. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73d2ac28-a7da-458a-bb9e-30569c32b3c8.json and https://artists.proofprofile.net/proofs/artist/73d2ac28-a7da-458a-bb9e-30569c32b3c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).