thumb|Bas Haring reading from De IJzeren Wil (The Iron Will), 2007 Sebastiaan (Bas) Haring (born 23 April 1968 in De Bilt) is a Dutch writer of popular science and children's literature, television p
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 0xb5fc13f566d5bc5c11b17d4dad44f7abd38db386bcb192c0f08572220d07d8ff. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99ad6e26-f26f-4248-b5ea-67bd71ac2902.json and https://artists.proofprofile.net/proofs/artist/99ad6e26-f26f-4248-b5ea-67bd71ac2902.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Waarom? [De belangrijkste onderwerpen uit de wetenschap voor kinderen (Onverkort)]