Dalbir Singh Gill (born 25 November 1936) is a former Indian Olympic cyclist. He competed in the 1000m time trial, team pursuit and team time trial events at the 1964 Summer Olympics. References Ext
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 0x63db7143564a4157f430ba543ff15da1fae387df6eef86d7f4da1af555e7e225. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34c8f15b-623c-4dce-94d9-d56975149620.json and https://artists.proofprofile.net/proofs/artist/34c8f15b-623c-4dce-94d9-d56975149620.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.