Buckten is a municipality in the district of Sissach in the canton of Basel-Country in Switzerland. thumb|left|250px|Buckten History Buckten is first mentioned in 1266 as Butuchon. Geography thumb|A
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 0x5905340404ea5c7403ebec02d740d0e66b8010b17fc1f30ebb680325a7921d43. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f1a913a-4215-43e8-9f6f-fcc386d357dc.json and https://artists.proofprofile.net/proofs/artist/5f1a913a-4215-43e8-9f6f-fcc386d357dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).