Bitcoin: What is the data format layout for txindex LevelDB values?

Here is an article about Bitcoin: Database Layout for TXINDEX LEVELDB:

Understanding Bitcoin Txindex Level values ​​

Bitcoin is a decentralized and open source blockchain network that uses a new approach to managing your transaction index. The tXINDEX level in LevelDB, a mild format of data storage, plays a crucial role in this process. In this article, we will delve into the Data Format Layout of the Txindex Leveldb values ​​and explore the keys used in these pairs.

The keys used in Txindex

When considering the keys used in the values ​​of Txindex Leveldb, you may be surprised to learn that they are quite different from those used in traditional databases. Bitcoin Txindex is designed to store and effectively recover transaction data using a compact binary format. The keys used in this context are based on the Blockchain Merkle Tree structure.

Pairs of key value

In LevelDB, key value pairs are stored as a combination of a prefix (a fixed sequence) and a suffix (the actual value). In Txindex, these key value pairs are represented using a specific format. The keys used in the TXINDEX LEVELDB values ​​consist of two parts:

• Prefix : A 32 bytes of the transaction ID.

• suffix : the actual value stored in the Leveldb database.

Format -Chave

The TXINDEX LEVELDB -CHAVE FORMAT is as follows:

`

`

Where is a 32 bytes of the transaction ID, and is the real value stored in the Level Database.

Example: 0x6a4e35f7-1c5b-4672-a77d-fdb74aaf3f33

In this example:

• 0x6a4e35f7 is a 32 bytes of the transaction ID.

• -1c5b-4672-a77d-fdb74aaf3f33 It is the actual value stored in the LevelDB database.

Data format layout

When you store a pair of key values ​​on TXINDEX LEVELDB, the following data format layout is used:

`

+—————-+

| Prefix (32bytes) |

+—————-+

|

|

v

+—————– ++ ————–+

| Value | | Value |

+—————– ++ ————–+

`

This layout shows the two parts of the key values: the prefix and the suffix.

Conclusion

In conclusion, Bitcoin’s Txindex level values ​​use a compact binary format to stor and efficiently recover transactions data. The keys used in this context are based on the Blockchain Merkle Tree structure, consisting of a 32 transaction ID 32 bytes followed by the actual value stored in the Leveldb database. Understanding this pair of key values ​​is essential for working with Bitcoin’s Txindex level values.