The Anatomy of a Bitcoin Transaction117

Bitcoin transactions are the lifeblood of the Bitcoin network. They allow users to send and receive Bitcoin, and they are essential for the functioning of the blockchain. In this article, we will take a closer look at the anatomy of a Bitcoin transaction, and we will explain the different parts that make up a transaction.## The Transaction Header

The transaction header contains the basic information about a transaction. This information includes the following:* The version of the transaction
* The number of inputs
* The number of outputs
* The locktime
## The Transaction Inputs

The transaction inputs are the source of the Bitcoin that is being sent in a transaction. Each input consists of the following:* A reference to the previous transaction that created the Bitcoin being spent
* The index of the output in the previous transaction that is being spent
* The signature script, which proves that the sender of the transaction owns the Bitcoin being spent
## The Transaction Outputs

The transaction outputs are the destination of the Bitcoin that is being sent in a transaction. Each output consists of the following:* The amount of Bitcoin that is being sent
* The scriptPubKey, which specifies the conditions that must be met in order to spend the Bitcoin
## The Transaction Witness

The transaction witness is a new addition to the Bitcoin protocol that was introduced with SegWit. The witness contains the signatures for the transaction inputs, and it is used to verify that the sender of the transaction owns the Bitcoin being spent.## The Transaction ID

The transaction ID is a unique identifier for a transaction. It is calculated by hashing the transaction header and the transaction witness.## Example of a Bitcoin Transaction

The following is an example of a Bitcoin transaction:```
0100000001813f7901181518734e0939a2a88f81193f33440188845d3513d2596a1227606b000000006a473044022059af0171b491c7840754127504a0d32d1ef729ac2960c18a88864eaccd0d26e2022059af0171b491c7840754127504a0d32d1ef729ac2960c18a88864eaccd0d26e201210349fc493887f875e03f9d915254443044f2c499a5607a87a2750da23b80548d84ffffffff02a0860100000000001976a914a3b807410ef0c9b3ac8a1157e394c857564d205988ac00000000
```
## Conclusion

Bitcoin transactions are complex structures that are essential for the functioning of the Bitcoin network. By understanding the anatomy of a Bitcoin transaction, you can gain a deeper understanding of how Bitcoin works.

2024-10-26

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