Bex (; ; ) is a municipality in the canton of Vaud, Switzerland, located in the district of Aigle. It is a few kilometers south of its sister town municipality of Aigle. History Bex is first mentione
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 0x7c409d3da19c6b4791c32f76c416fa9804a0258c0c381b5a3f60c84c2ba95cc3. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca9efe71-7274-4908-af4c-9c036ae2bde3.json and https://artists.proofprofile.net/proofs/artist/ca9efe71-7274-4908-af4c-9c036ae2bde3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).