package types import ( "bytes" "encoding/hex" "fmt" "time" "github.com/wealdtech/go-merkletree" "github.com/ethereum/go-ethereum/crypto" ) type Transaction struct { Hash []byte MerkleProof merkletree.Proof // sets when transaction is added to block Timestamp time.Time Data []byte } func CreateTransaction(data []byte) *Transaction { timestamp := time.Now() encodedData := hex.EncodeToString(data) hash := crypto.Keccak256([]byte(fmt.Sprintf("%s", encodedData))) return &Transaction{ Hash: hash, Timestamp: timestamp, Data: data, } } func (tx *Transaction) ValidateHash() bool { encodedData := hex.EncodeToString(tx.Data) h := crypto.Keccak256([]byte(fmt.Sprintf("%s", encodedData))) return bytes.Equal(h, tx.Hash) }