Preben is a given name of Slavic origin most common in Denmark where it arrived around 1350 from the neighbouring Germany. The name was Pridbjørn in medieval Danish, derived from the Slavic name Pritb
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 0x2cd2fd2f6c646c60d09d96c544428d5c8aa9604fce1ccd6954cca6733087d35d. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99c53f21-c955-4b90-abf7-79baf452899d.json and https://artists.proofprofile.net/proofs/artist/99c53f21-c955-4b90-abf7-79baf452899d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Exodus: Sandefjordrussen 2016 (feat. Stender)