# Simple Bitcoin Architecture

**Published by:** [Untitled](https://paragraph.com/@0xb14101d59de63a177e7b5cd76afcd14ae237a5b7/)
**Published on:** 2023-03-30
**URL:** https://paragraph.com/@0xb14101d59de63a177e7b5cd76afcd14ae237a5b7/simple-bitcoin-architecture

## Content

Block{ hash, previousHash, merkleRoot, data, transactions, timeStamp, nonce} Nonce:随机数，使得hash的前difficulty位是0 mineBlock(int difficulty) Wallet{ privateKey, publicKey, UTXOs} UTXOs:Unspent Transaction Output, 属于自己且没有被使用的交易输出 generateKeyPair使用ECC（椭圆曲线算法）生成公私钥 getBalance sendFunds MerkleRoot: What: 任一父节点等于左右子节点数据相加后哈希的结果，所以默克尔树有另外一个名字哈希树(Hash tree) Use：mine时从transactions里获取merkleRoot: 遍历树 Function: 打包计算hash Sha256(merkleRoot + previousHash + timeStamp + nonce) Transaction{ transactionId, sender, recipient接收方, value, byte[] signature, inputs, outputs} processTransaction verifySignature input.UTXO calculateHash UTXOs.put(output.id,output); UTXOs.remove(input.UTXO.id); signature：使用privateKey对交易双方和value等数据进行签名 使用公钥验证签名 1.只有数字货币的拥有者才能使用； 2.在交易被矿工挖出之前(共识前)交易不会被篡改

## Publication Information

- [Untitled](https://paragraph.com/@0xb14101d59de63a177e7b5cd76afcd14ae237a5b7/): Publication homepage
- [All Posts](https://paragraph.com/@0xb14101d59de63a177e7b5cd76afcd14ae237a5b7/): More posts from this publication
- [RSS Feed](https://api.paragraph.com/blogs/rss/@0xb14101d59de63a177e7b5cd76afcd14ae237a5b7): Subscribe to updates