Imports github.com/decred/base58 github.com/decred/dcrd/chaincfg github.com/decred/dcrd/chaincfg/chainhash github.com/decred/dcrd/dcrec github.com/decred/dcrd/dcrec/secp256k1 github.com/decred/dcrd/dcrutil Standard library imports bytes crypto/hmac crypto/rand crypto/sha512 encoding/binary errors fmt math/big