Imports github.com/btcsuite/btcd/btcec github.com/btcsuite/btcd/chaincfg github.com/btcsuite/btcutil github.com/ethereum/go-ethereum/crypto go.uber.org/ratelimit golang.org/x/net/proxy Standard library imports bufio context crypto/rand encoding/json fmt log math/big net net/http net/url os os/signal regexp strconv strings sync syscall time