Componet
utxo.go

Detail
NewUTXO get TxOutput and height from coinbase
Need to more discuss....

Component
blockchain/utxo.go

Detail

• find all utxo for pubkeyHash

Before

func Serialize(object interface{}) ([]byte, error) {
	data, err := json.Marshal(object)
	if err != nil {
		panic(fmt.Sprintf("Error encoding : %s", err))
	}
	return data, nil
}

func Deserialize(serializedBytes []byte, object interface{}) error {
	if len(serializedBytes) == 0 {
		return nil
	}
	err := json.Unmarshal(serializedBytes, object)
	if err != nil {
		panic(fmt.Sprintf("Error decoding : %s", err))
	}
	return err
}

After

func (tx *UTXO) Serialize() ([]byte, error) {
	var encoded bytes.Buffer

	enc := gob.NewEncoder(&encoded)
	err := enc.Encode(tx)
	if err != nil {
		return nil, err
	}

	return encoded.Bytes(), nil
}

func DeserializeUtxo(data []byte) (*UTXO, error) {
	var utxo UTXO

	decoder := gob.NewDecoder(bytes.NewReader(data))
	err := decoder.Decode(&utxo)
	if err != nil {
		return nil, err
	}

	return &utxo, nil
}

Modified way has duplicated code... and before code has to implement additional custom marshall code.

• objective
• architecture
• description

Component
transaction.go

Componet
wallet

Component
blockchain/block.go

Detail
Hash 함수 구현

Component
transaction.go

Detail
Hash() 함수 구현

Reference
https://steemit.com/kr/@niipoong/id-create-bitcoin-txid

Component
util.cryptograph.go

Detail
개인키, 공개키 생성 함수 구현

Componet
conf/

Proposal Detail

• genesis block, file path
• blockchain db path
• utxoset db path

Component
blockchain/blockchain.go

Detail

• Isvalid method act as validation about input block

Component
wallet.go

Detail
비트코인 주소를 생성하는 함수 수현

Reference
https://en.bitcoin.it/wiki/Technical_background_of_version_1_Bitcoin_addresses

Component
block.go

Detail
Unmarshal 할 때 string to []byte 구현, UnmarshalJSON 구현 필요

Reference
https://blog.golang.org/json-and-go

TestNewUTXOSet and TestNewBlockChain is conflicted!

Component
util/cryptograph.go

Detail

• base58 인코딩, 디코딩 구현([]byte -> []byte)
• testcase

Component
blockchain/merkletree.go

Detail
머클트리 구현, 테스트케이스 구현

Componet
conf/

Proposal Detail
After #33 is complete, refac codes by apply configuration.

Component
wallet.go

Detail
공개키 -> 주소 생성

Reference
https://en.bitcoin.it/wiki/Technical_background_of_version_1_Bitcoin_addresses

Component
utxo.go

Detail

• Need to refac Update Method
• Implements Update Method's test case

Componet
wallet.go

Proposal Detail
현재는 간단하게 non-deterministic으로 구현하는 방향이지만 deterministic한 wallet도 고려해 볼만하다고 생각합니다. seed를 어떻게 생성하고 지갑은 어떤식으로 구성할지 생각해보면 좋을 것 같습니다.

Componet
transaction

Proposal Detail
In bitcoin, blockheight can be seen only by coinbase transaction!
It will be implemented after implements script!

Reference
http://learnmeabitcoin.com/glossary/coinbase-transaction