Jesper is a given name commonly believed to be of ancient Persian origin, meaning "Treasurer". Some notable people with the name Jesper include: Music Jesper Koch (born 1967), Danish composer Jesp
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf677c344c148c208c4c00af9b58c7769d242dde0336cae832a83fe725ffa7e6c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/409331c7-e763-4f54-b57a-6cf80836657e.json and https://artists.proofprofile.net/proofs/artist/409331c7-e763-4f54-b57a-6cf80836657e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).