Luc Jozef Amelie Appermont (born 4 October 1949) is a Flemish television presenter. He started his career on Radio 2 as a radio announcer, he hosted the talent show Observatory. From 1976 until 1990 h
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 0xbb18dad562481fb684335d1a46bd02e7d24506a7332b785efefe787d29febd24. 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/71ae5a61-8768-403e-b96b-75a53700baf0.json and https://artists.proofprofile.net/proofs/artist/71ae5a61-8768-403e-b96b-75a53700baf0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).