Imports github.com/zvchain/zvchain/common/secp256k1 github.com/zvchain/zvchain/middleware/types github.com/btcsuite/btcutil/hdkeychain github.com/zvchain/zvchain/storage/sha3 github.com/btcsuite/btcd/chaincfg github.com/tyler-smith/go-bip39 github.com/zvchain/zvchain/common Standard library imports bytes encoding/hex encoding/json errors fmt io io/ioutil hash crypto/elliptic crypto/sha256 crypto/ecdsa math strings sync math/big time net/http regexp strconv