File:Bitcoin Block Data.svg
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Summary
Graphic of data fields in Bitcoin block chain. Simplified depiction: some fields are missing.
- Prev_Hash: hash value of previous block. The purpose is to chain all blocks together.
- Tx_root: root hash value of a hash tree (merkle tree) over all transactions.
- Timestamp: creation time of block, as seen by block creator. The timestamp is checked by other clients and must be within a certain window (tolerates small clock skews).
- Nonce: any number to make sure the resulting hash value of this block is below the target hash value. The Nonce is a 32 bit number and the 2^32 number space is exhausted during mining within less than a second.
The transactions (Tx0, Tx1, ...) are appended to the block. The first transaction generates new bitcoins and contains the coinbase field which includes an extraNonce to provide a larger search space for valid block hash values.
Copyright status:
Creative Commons Attribution-Share Alike 3.0 Unported license.
Source:
https://commons.wikimedia.org/wiki/User:Matth%C3%A4us_Wander
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:41, 4 October 2018 | | 900 × 675 (58 KB) | Thales (talk | contribs) | Graphic of data fields in Bitcoin block chain. Simplified depiction: some fields are missing. * Prev_Hash: hash value of previous block. The purpose is to chain all blocks together. * Tx_root: root hash value of a hash tree (merkle tree) over all... |
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