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 0xc52d83f54adb0cf54151fc4d6607dc8daf20e841a0a3167be34f6cd3b3e242e4. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26a6e075-fec2-44d3-9bdd-c3b0b2c39279.json and https://artists.proofprofile.net/proofs/artist/26a6e075-fec2-44d3-9bdd-c3b0b2c39279.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Het verdwenen veulen [Lisa & Summer, Deel 4 (Onverkort)]
Brand in de stal [Lisa & Summer, Deel 2 (Onverkort)]
Vrienden op de manege [Lisa & Summer, Deel 5 (Onverkort)]
Spreekbeurt in het gips [Lisa & Summer, Boek 3 (Onverkort)]
Pony's in nood [Lisa & Summer, Deel 6 (Onverkort)]
Op zoek naar Rosie [Lisa & Summer, Deel 7 (Onverkort)]
Avontuur in Italië [Lisa & Summer, Deel 8 (Onverkort)]
Actie op de manege [Lisa & Summer, Deel 9 (Onverkort)]