Dansko is a comfort footwear company based in West Grove, Pennsylvania. Dansko was founded in 1990 by husband and wife team, Peter Kjellerup and Mandy Cabot. Most well known for its clogs, Dansko also
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 0xb52a336db1d1c32660eac4e65838ec5567e393b8ebcecfdae7d8bc0f1548b9a9. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad297cad-dcbe-441b-9f31-16d409b99789.json and https://artists.proofprofile.net/proofs/artist/ad297cad-dcbe-441b-9f31-16d409b99789.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).