The High Tatras or High Tatra Mountains (; ; , Vŷsokŷ Tatrŷ; ; ), are a mountain range along the border of northern Slovakia in the Prešov Region, and southern Poland in the Lesser Poland Voivodeship.
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 0xa5108f742342bcd36f0ffe0b21a5e6b8e070c6e037ed74e7cc9c99cf487a83c0. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca5a813f-51ea-448e-80cb-83b16fda319a.json and https://artists.proofprofile.net/proofs/artist/ca5a813f-51ea-448e-80cb-83b16fda319a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).