Bitcoin
Bitcoin
BTC
$103,979.00
1d: +1.45%
7d: +1.21%
$103,979.00
+1.45%
Ethereum
Ethereum
ETH
$2,586.40
1d: +0.29%
7d: +16.84%
$2,586.40
+0.29%
Polkadot
Polkadot
DOT
$4.87
1d: -0.40%
7d: +9.16%
$4.87
-0.40%
Solana
Solana
SOL
$172.89
1d: -0.49%
7d: +6.89%
$172.89
-0.49%
XRP
XRP
XRP
$2.43
1d: -3.56%
7d: +5.40%
$2.43
-3.56%
Shiba Inu
Shiba Inu
SHIB
$0.00001512
1d: -1.62%
7d: +6.62%
$0.00001512
-1.62%

SHA-256

Share this article:
x fb linkedin tg
Table of contents
    1. 0.2. How SHA-256 Works
    2. 0.4. Why SHA-256 Is Essential

SHA-256 (Secure Hash Algorithm 256-bit) is a cryptographic hash function used to secure data by generating a unique, fixed-size 256-bit output from any input. It’s best known for securing the Bitcoin blockchain.

How SHA-256 Works

SHA-256 takes any input text, file, or transaction data, and transforms it into a unique 64-character hexadecimal string. Even the slightest change in input creates a completely different output. It’s a one-way function, meaning you can’t reverse-engineer the original data from the hash. In Bitcoin, SHA-256 secures transactions, links blocks together, and underpins the proof-of-work mining process.

Why SHA-256 Is Essential

SHA-256 provides the security backbone of Bitcoin and many other blockchain systems. It ensures data integrity, prevents tampering, and supports decentralized consensus. Its resistance to collisions and pre-image attacks makes it a trusted standard in both blockchain and traditional cybersecurity.