the fingerprint
zero-padded, fixed-length hex xfp
import {fingerprintToFixedLengthHex} from "@caravan/bitcoin"
const pubkeyFingerprint = 724365675
console.log(fingerprintToFixedLengthHex(pubkeyFingerprint)) // 2b2cf16b
const uncompressedPubkeyFingerprint = 247110101
console.log(fingerprintToFixedLengthHex(uncompressedPubkeyFingerprint)) // 0eba99d5
Take a fingerprint and return a zero-padded, hex-formatted string that is exactly eight characters long.