const 
    trezorVerify = require('trezor-verify'),
    hiddenChallenge = "cd8552569d6e4509266ef137584d1e62c7579b5b8ed69bbafa4b864c6521e7c2", // Use random value
    visualChallenge = "2015-03-23 17:39:22",
    pubKey = "023a472219ad3327b07c18273717bb3a40b39b743756bf287fbd5fa9d263237f45",
    signature = "20f2d1a42d08c3a362be49275c3ffeeaa415fc040971985548b9f910812237bb41770bf2c8d488428799fbb7e52c11f1a3404011375e4080e077e0e42ab7a5ba02",
    version = 2;
 
// returns true on success, false on failure
const verified = trezorVerify.verify(hiddenChallenge, visualChallenge, pubKey, signature, version);