Dexter "Dex" Walker is a fictional character from the Australian soap opera Home and Away, played by Charles Cottier. He made his first screen appearance during the episode broadcast on 30 July 2009.
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 0x48c209bdfec622a91f85483f428a172961a78e6523666b7afc931cba01869d0b. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff236741-680d-452a-b28c-f3f3f9358106.json and https://artists.proofprofile.net/proofs/artist/ff236741-680d-452a-b28c-f3f3f9358106.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).