Sunset Country, or the Sunset Desert, is a desert situated in remote north-west Victoria in the Sunraysia region. By road, the area is about 4 kilometres north from Manya and 30 kilometres south from
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1779cc79f8007377a743c762c145487d3163306e0948d6d365ac02972a30fc. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2abfce1-68f2-461d-ad76-0e7f00692fc9.json and https://artists.proofprofile.net/proofs/artist/a2abfce1-68f2-461d-ad76-0e7f00692fc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).