SHA-256 · 256-bit unsigned integer race

sha256 lowest brainwallet hash challenger

Search billions of inputs. Find the smallest SHA-256 hash.

🔒 No wallets, no keys, no deposits — just a free hashing game. Nothing you type is stored as a wallet.

How it works

1. Pick an input — any text: a word, a passphrase, random characters, or dictionary words. The search modes below generate them for you.
2. SHA-256 turns it into a 256-bit number — a fingerprint that is unpredictable: change one letter and the whole hash changes.
3. Goal: the smallest hash — the winner is the input whose SHA-256 value is the lowest number. In practice you hunt for hashes starting with the most zeros — each extra zero bit is twice as hard.
4. Verified, not trusted — your browser does the hashing (CPU + GPU). A record is published only after the server re-computes the hash itself.

Current world record

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Leading zero bits

Expected attempts

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Found by

Nobody yet

Verified records

Miner name

Network hashrate

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Active miners

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CPU power

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GPU power

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Your share

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Estimated time to the next record (—)

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At the combined speed above — every extra zero bit doubles the work.

Combined speed of everyone searching right now · updates every 15s

Search engine

Engine

Checking for a graphics card…

Mode

Prefix

Starting nonce

Vanity hash pattern (optional)

Hunt hashes that start with these hex characters (0–9, a–f), e.g. cafe or dead. Hits are listed separately and do not affect the record race. Runs on the processor only.

Batch size

Threads (workers)

Your search

idle

Hash rate

0 H/s

Attempts

Elapsed

00:00:00

Workers

Your best

not found yet

256-bit hash pattern

00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000

Hash history

Personal records appear here as your search improves.

Benchmark

Logical cores: 1
Engine: Web Workers + JS SHA-256
Encoding: UTF-8

Measured live in your browser — no synthetic numbers.

My records — enter a miner name

Global leaderboard

global-v1

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