Jesper Urban Jansson (born 8 January 1971) is a Swedish former professional footballer who played as a defender or midfielder. He is the head of football of Allsvenskan club IFK Göteborg since April 2
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 0x3d56965b695f6c761efaaaa1ba0722809feafe04795a024a46963e08c6ab267b. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/099be9c3-d666-4255-93a1-5229bd06aacc.json and https://artists.proofprofile.net/proofs/artist/099be9c3-d666-4255-93a1-5229bd06aacc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).