Jakob Lorentzen (born 1968) is a Danish organ soloist and chamber musician. He is organist and choir master of the Holmen Church (The Royal Naval Church in Copenhagen) and Master of the music at Chris
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 0xc011672b392abde33b070bb22a17b620f9ad0f47c5d206c1e23cd684d9c6ce91. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76f2e5b0-ba79-45ce-8d72-3fc98ece18b2.json and https://artists.proofprofile.net/proofs/artist/76f2e5b0-ba79-45ce-8d72-3fc98ece18b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).