Stein-Erik Olsen (born 8 September 1953) is a Norwegian classical guitarist and professor of guitar at the University of Bergen, known from collaborations with such as Gro Sandvik, Roar Engelberg and
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 0xfe2c0c2f135bf79a9e8ec67fb75700abbe968c2b0146c0628ec239d25534f0a4. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8374c6b-bd6c-49d3-9d7d-67a55e8d6933.json and https://artists.proofprofile.net/proofs/artist/b8374c6b-bd6c-49d3-9d7d-67a55e8d6933.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).