De Vliegende Hollander ("The Flying Dutchman" in English) is a combination water coaster and dark ride at the Efteling amusement park in the Netherlands. The ride is based on the legend of Dutch man o
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 0x82a53c19a1206477fa75a68366ba7693b571664314d1c5ccf7f6f6042baacd9f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79f4d4be-705b-434a-b3ba-eedb63d486d5.json and https://artists.proofprofile.net/proofs/artist/79f4d4be-705b-434a-b3ba-eedb63d486d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).