Imports github.com/gogo/protobuf/gogoproto github.com/golang/protobuf/ptypes/timestamp github.com/btcsuite/btcutil/base58 github.com/gogo/protobuf/proto github.com/zeebo/errs gopkg.in/spacemonkeygo/monkit.v2 Standard library imports crypto/hmac bytes context crypto/rand crypto/sha256 crypto/subtle encoding/binary errors fmt math time