Jacob Hansen (born 9 November 1970) is a Danish heavy metal producer, engineer, and musician. He founded the technical thrash metal band Invocator, for which he has served as singer/guitarist since 19
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 0x379f054c605ab071ba406ab5fb2b60b2ff03483504d0a8c0d9b9257df38a8e42. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c86d68d-0ba1-40c6-a006-026e98154b78.json and https://artists.proofprofile.net/proofs/artist/9c86d68d-0ba1-40c6-a006-026e98154b78.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).