Davos (, ; or ; ; Old ) is an Alpine resort town and municipality in the Prättigau/Davos Region in the canton of the Grisons, Switzerland. It has a permanent population of (). Davos is located on th
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 0x0ef7001db09fff5525fb773eae31faf7a3508b50d6281c5f144859607740f012. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bd00818-bb2b-4394-aa26-d6979755b457.json and https://artists.proofprofile.net/proofs/artist/1bd00818-bb2b-4394-aa26-d6979755b457.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).