Is BTC Lottery Miner a real Bitcoin miner?

Yes. Live mode asks a real solo mining pool for Bitcoin block work and your browser performs real SHA-256 proof-of-work on your CPU. Historical replays and the Manual Lab are separate learning tools.

Can a normal PC mine a Bitcoin block?

Technically yes, but the odds are astronomically small compared with modern ASIC miners. This is best treated as an educational lottery experiment, not income.

Do I need to enter private keys?

No. The app only needs a public Bitcoin payout address. Never enter a seed phrase or private key into a mining website.

Real proof-of-work. Astronomical odds.

A real Bitcoin lottery miner in your browser.

Your PC will make genuine Bitcoin hash attempts against work from a solo pool. A block win is extremely unlikely. The point is to experience mining, not to promise profit.

Free Runs only while open Stop anytime

An illustrated computer chip feeding paper guesses through a transparent proof-of-work machine — **What your PC does:** change a number, hash the block header, check the result, repeat.

01Paste an address

Only a public payout address. Never a secret.

02Press start

Your browser receives real work from a solo pool.

03Watch the guesses

The Live view turns invisible mining into something you can see.

Live miner

Your PC is buying lottery tickets with hashes.

This is real work from a Bitcoin solo pool. The numbers below belong to this browser session.

Current speed 00:00

0 H/s

0 hashes tried 0 accepted / 0 rejected

Best ticket -- diff

waiting for hashes

Lottery reality --

Start mining to estimate your pace.

Advanced block detailsThe raw ingredients your PC is hashing

Current block work

no job yet

Version --------

Previous block --------

Merkle path 0 branches

Time --------

Bits --------

Nonce idle

Activity

self-test checking

Mining school

Understand mining in four short chapters.

Start with no Bitcoin knowledge. Each chapter answers one question, then hands the idea to the next.

Chapter 1 of 4

Bitcoin is a public timeline made of blocks.

People send bitcoin to each other. The network groups those payments into blocks, like numbered pages in a public record book. Each new block includes the fingerprint of the block before it.

That link means changing an old payment would also change every fingerprint after it. Mining makes creating those replacement pages deliberately expensive, so the shared history becomes hard to rewrite.

Mining, in one sentence

Miners compete to earn the right to add the next page to Bitcoin's public timeline.

Block 913,240Paymentsprev: 91ab...

Block 913,241Paymentsprev: 4f20...

Next blockWho earns it?miners compete

Chapter 2 of 4

Mining is fast guessing, not solving a clever equation.

A miner builds a candidate block and compresses its important details into an 80-byte header. Then it runs that header through SHA-256 twice. The result is a hash: a predictable fingerprint that looks random.

The miner changes a small number called the nonce and hashes again. There is no shortcut. Each nonce is another lottery ticket, and nobody knows the winning number before trying it.

Block headerpuzzle data

+ nonceone guess

SHA-256 twicefingerprint

Hashcheck result

Try it

Change one nonce. Watch the whole hash change.

block header + nonce 0 choose a nonce to make a hash Waiting for a guess

Chapter 3 of 4

A winning hash must be lower than Bitcoin's target.

Bitcoin reads a hash as one enormous number. The network publishes a target. A hash below that target wins; a hash above it loses. More leading zeroes usually mean a smaller number.

Too high7f31...c9a0

Closer001c...91bf

Below target0000...09af

Every 2,016 blocks, Bitcoin adjusts the target. If blocks arrived too quickly, the target becomes lower and mining gets harder. If they arrived too slowly, it becomes easier. This aims for roughly ten minutes per block over time.

Normal PCModern ASIC

JobSHA-256 guessesSHA-256 guesses

DifferenceThousands to millions/secTrillions/sec

Best useLearning and lottery funIndustrial mining

Same proof-of-work, radically different speed. That is why this app is real mining but not a sensible income plan.

Chapter 1 of 4

Historical replay

How fast would this PC mine in early Bitcoin?

Choose an old block. Your browser automatically tries nonces against its historical target. No nonce typing and no local app.

ready to load idle

Your replay speed 0 H/s 0

Historical difficulty --

Best hash --

Winning hash --

Quick replay teaches the ending. Honest PC pace measures the real search and may take a long time.

What this proves

Your CPU performs the same type of double SHA-256 work used for current Bitcoin mining. Historical targets were easier; today's worldwide ASIC competition is vastly faster.

Slow-motion mining

Take one hash apart.

The live miner races. This lab pauses on one historical block, one nonce, and one result so you can inspect every step.

1Load a block

Fetch its real header and target.

2Choose a nonce

This is the single guess.

3Hash and compare

Below target wins; above target loses.

block not loaded waiting

1. Serialized 80-byte header load a block to begin

2. SHA-256 pass one --

3. Final block hash --

4. Target to beat --

Local milestones

Achievements

A quiet record of what you explored. It lives only in this browser and never changes your mining odds.

0 / 27unlocked

Your collection

Preferences

Settings

Most visitors can leave this page alone. Pool controls are here for people who know which Stratum server they want.

Connection

Mining pool

The default Europe endpoint is a sensible choice for most visitors.

Pool Worker label

Experience

Sound

Small local cues for starts, stops, milestones, and historical wins.

Enable subtle sounds