Hugo Borst (born 15 June 1962, Rotterdam) is a Dutch writer, editor, TV personality and critic (best known for his football critiques). Career Borst finished school when he was 18, the so-called havo
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 0xa7b1d494ef1831e517fe6004fef4bedc7b297d9084e2214d6ec2cf4bcaad0043. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b3c508e-fd36-4946-a72c-6cda26d9788f.json and https://artists.proofprofile.net/proofs/artist/9b3c508e-fd36-4946-a72c-6cda26d9788f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).