add coinbase tx to genesis block

tinychainorg · Jan 1, 2025 · cea349f · cea349f
1 parent 9c4c332
commit cea349f
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Showing 3 changed files with 54 additions and 27 deletions.
diff --git a/core/nakamoto/genesis.go b/core/nakamoto/genesis.go
@@ -35,7 +35,16 @@ func GetRawGenesisBlockFromConfig(consensus ConsensusConfig) RawBlock {
 		TransactionsMerkleRoot: [32]byte{},
 		Nonce:                  [32]byte{},
 		Graffiti:               [32]byte{0xca, 0xfe, 0xba, 0xbe, 0xde, 0xca, 0xfb, 0xad, 0xde, 0xad, 0xbe, 0xef}, // 0x cafebabe decafbad deadbeef
-		Transactions:           []RawTransaction{},
+		Transactions: []RawTransaction{
+			{
+				FromPubkey: [65]byte{0x04, 0xd0, 0xe7, 0x0c, 0xe1, 0xed, 0x48, 0x3e, 0x2f, 0x32, 0xad, 0x55, 0x11, 0x53, 0xa5, 0x36, 0x3f, 0xa6, 0xc8, 0x2f, 0xd5, 0xea, 0x0c, 0xd9, 0x5b, 0xf8, 0x0e, 0xae, 0xb3, 0x44, 0x15, 0xcb, 0x8d, 0x45, 0xc3, 0x93, 0x1f, 0xcc, 0x49, 0xed, 0x44, 0x4b, 0xe5, 0x44, 0x0f, 0x1d, 0x52, 0x23, 0x4a, 0x7e, 0xb2, 0xbd, 0x9d, 0xc3, 0x7a, 0x40, 0x90, 0x69, 0x79, 0xa5, 0x2f, 0xa0, 0x72, 0xe5, 0xb4},
+				ToPubkey:   [65]byte{0x04, 0xd0, 0xe7, 0x0c, 0xe1, 0xed, 0x48, 0x3e, 0x2f, 0x32, 0xad, 0x55, 0x11, 0x53, 0xa5, 0x36, 0x3f, 0xa6, 0xc8, 0x2f, 0xd5, 0xea, 0x0c, 0xd9, 0x5b, 0xf8, 0x0e, 0xae, 0xb3, 0x44, 0x15, 0xcb, 0x8d, 0x45, 0xc3, 0x93, 0x1f, 0xcc, 0x49, 0xed, 0x44, 0x4b, 0xe5, 0x44, 0x0f, 0x1d, 0x52, 0x23, 0x4a, 0x7e, 0xb2, 0xbd, 0x9d, 0xc3, 0x7a, 0x40, 0x90, 0x69, 0x79, 0xa5, 0x2f, 0xa0, 0x72, 0xe5, 0xb4},
+				Sig:        [64]byte{0xb3, 0x4c, 0x36, 0x1d, 0xb2, 0xbe, 0x89, 0x48, 0xfb, 0xd6, 0x61, 0x9e, 0xa5, 0xeb, 0xe2, 0x7b, 0x90, 0xae, 0x8d, 0x5a, 0xca, 0xa6, 0x94, 0xc2, 0x1f, 0x11, 0x81, 0x7e, 0x16, 0x98, 0x17, 0x41, 0xeb, 0x6a, 0xe8, 0xc4, 0xbf, 0x48, 0xe3, 0x13, 0x99, 0x81, 0x0e, 0xec, 0xb9, 0x62, 0x69, 0x8d, 0x8d, 0xb1, 0x15, 0x3b, 0xfb, 0x0d, 0x67, 0x6c, 0xa8, 0x6e, 0x52, 0x55, 0x1e, 0xf4, 0x27, 0x8d},
+				Amount:     50,
+				Fee:        0,
+				Nonce:      0,
+			},
+		},
 	}
 
 	// Mine the block.
@@ -55,26 +64,5 @@ func GetRawGenesisBlockFromConfig(consensus ConsensusConfig) RawBlock {
 
 	fmt.Printf("Genesis block hash=%x work=%s\n", block.Hash(), work.String())
 
-	// to block header
-	// header := BlockHeader{
-	// 	ParentHash:             block.ParentHash,
-	// 	ParentTotalWork:        block.ParentTotalWork,
-	// 	Difficulty:             block.Difficulty,
-	// 	Timestamp:              block.Timestamp,
-	// 	NumTransactions:        block.NumTransactions,
-	// 	TransactionsMerkleRoot: block.TransactionsMerkleRoot,
-	// 	Nonce:                  block.Nonce,
-	// 	Graffiti:               block.Graffiti,
-	// }
-	// fmt.Printf("Genesis header block hash=%x\n", header.BlockHash())
-	// fmt.Printf("ParentHash: %x\n", header.ParentHash)
-	// fmt.Printf("ParentTotalWork: %x\n", header.ParentTotalWork)
-	// fmt.Printf("Difficulty: %x\n", header.Difficulty)
-	// fmt.Printf("Timestamp: %x\n", header.Timestamp)
-	// fmt.Printf("NumTransactions: %d\n", header.NumTransactions)
-	// fmt.Printf("TransactionsMerkleRoot: %x\n", header.TransactionsMerkleRoot)
-	// fmt.Printf("Nonce: %x\n", header.Nonce)
-	// fmt.Printf("Graffiti: %x\n", header.Graffiti)
-
 	return block
 }
diff --git a/core/nakamoto/genesis_test.go b/core/nakamoto/genesis_test.go
@@ -5,6 +5,7 @@ import (
 	"math/big"
 	"testing"
 
+	"github.com/liamzebedee/tinychain-go/core"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -39,3 +40,40 @@ func TestGetRawGenesisBlockFromConfig(t *testing.T) {
 	assert.Equal([32]byte{}, genesisBlock.TransactionsMerkleRoot)
 	assert.Equal(big.NewInt(21).String(), genesisNonce.String())
 }
+
+func formatByteArrayDynamic(b []byte) string {
+	out := fmt.Sprintf("[%d]byte{", len(b))
+	for i, v := range b {
+		if i > 0 {
+			out += ", "
+		}
+		out += fmt.Sprintf("0x%02x", v)
+	}
+	out += "}"
+	return out
+}
+
+func TestWalletCreateSignTransferTx(t *testing.T) {
+	wallet, err := core.CreateRandomWallet()
+	if err != nil {
+		panic(err)
+	}
+	tx := MakeCoinbaseTx(wallet, uint64(GetBlockReward(0)))
+
+	// JSON dump.
+	// str, err := json.Marshal(tx)
+	// if err != nil {
+	// 	panic(err)
+	// }
+
+	// Print as a Go-formatted RawTransaction{} for usage in genesis.go.
+	fmt.Printf("Coinbase tx:\n")
+	fmt.Printf("RawTransaction {\n")
+	fmt.Printf("From: %v,\n", formatByteArrayDynamic(tx.FromPubkey[:]))
+	fmt.Printf("To: %v,\n", formatByteArrayDynamic(tx.ToPubkey[:]))
+	fmt.Printf("Sig: %v,\n", formatByteArrayDynamic(tx.Sig[:]))
+	fmt.Printf("Amount: %d,\n", tx.Amount)
+	fmt.Printf("Fee: %d,\n", tx.Fee)
+	fmt.Printf("Nonce: %d,\n", tx.Nonce)
+	fmt.Printf("}\n")
+}
diff --git a/core/nakamoto/miner.go b/core/nakamoto/miner.go
@@ -45,14 +45,14 @@ func NewMiner(dag BlockDAG, coinbaseWallet *core.Wallet) *Miner {
 	}
 }
 
-func MakeCoinbaseTx(wallet *core.Wallet) RawTransaction {
+func MakeCoinbaseTx(wallet *core.Wallet, amount uint64) RawTransaction {
 	// Construct coinbase tx.
 	tx := RawTransaction{
 		Version:    1,
 		Sig:        [64]byte{},
 		FromPubkey: wallet.PubkeyBytes(),
 		ToPubkey:   wallet.PubkeyBytes(),
-		Amount:     50,
+		Amount:     amount,
 		Fee:        0,
 		Nonce:      0,
 	}
@@ -148,9 +148,6 @@ func (miner *Miner) MineWithStatus(hashrateChannel chan float64, solutionChannel
 
 // Creates a new block template for mining.
 func (miner *Miner) MakeNewPuzzle() POWPuzzle {
-	// Construct coinbase tx.
-	coinbaseTx := MakeCoinbaseTx(miner.CoinbaseWallet)
-
 	// Get the current tip.
 	current_tip, err := miner.dag.GetLatestFullTip()
 	if err != nil {
@@ -161,6 +158,10 @@ func (miner *Miner) MakeNewPuzzle() POWPuzzle {
 		current_tip = miner.GetTipForMining()
 	}
 
+	// Construct coinbase tx.
+	blockReward := uint64(GetBlockReward(int(current_tip.Height)))
+	coinbaseTx := MakeCoinbaseTx(miner.CoinbaseWallet, blockReward)
+
 	// Get the block body.
 	blockBody := []RawTransaction{}
 	blockBody = append(blockBody, coinbaseTx)