B Block Odds Lab

Bitcoin lottery mining, without the hype

Know your real block odds before you chase the next terahash.

A practical calculator and gear guide for Bitaxe, NerdMiner, and solo mining hobbyists who want better decisions, cleaner tuning, and fewer wasted parts.

Run the odds Read the guides

Small miners, honest math

Lottery mining has long odds, but the setup still deserves good tools. Start with your hashrate, compare realistic time horizons, then decide whether more cooling, power, or hardware is actually worth it.

Free
No account, no login
Honest
Expected value, not hype
Useful
Gear and tuning next steps

Solo block odds calculator

How likely is your miner to find a block?

Enter your hashrate and the current network difficulty. The calculator estimates expected time, daily odds, monthly odds, yearly odds, and rough expected value before electricity.

This uses the standard approximation: probability per hash is about 1 / (difficulty x 2^32). Real mining is random; averages are not promises.

Expected time -
Chance per day -
Chance per month -
Chance per year -

- expected BTC per year before fees and electricity.

- estimated yearly electricity cost.

Field guides

Start with the guides people are already searching for

Guide 01

Bitaxe Gamma tuning without cooking the board

Frequency, voltage, thermal limits, stability checks, and when to back down.

Read guide
Guide 02

Best low-cost upgrades for lottery miners

Power supplies, cables, fans, meters, heatsinks, and where cheap parts become false economy.

Read guide
Guide 03

Solo pools compared for hobby miners

What matters: uptime, payout rules, fees, latency, transparency, and block notification history.

Read guide
Guide 04

Lottery mining odds explained plainly

Why one terahash is still tiny, why luck streaks happen, and what expected value really means.

Read guide
Guide 05

Bitaxe vs NerdMiner vs USB sticks

A comparison article for beginners deciding whether they want learning, odds, or desk appeal.

Read guide

Gear basics

Practical gear coverage

Focus on parts that improve stability first: power, cables, cooling, meters, and desk setup. A tiny miner does not need hype. It needs clean power, controlled heat, and a way to measure changes.

Power delivery Power supplies, short cables, voltage sag, and watt meters.
Cooling Fans, airflow direction, stands, ambient room temp, and noise.
Solo mining setup Pool selection, fallback pool, wallet label, uptime, and rejects.

Weekly watchlist

Weekly lottery mining watchlist

Useful changes, not noise. Difficulty changes, firmware releases, price drops, restocks, pool issues, and one practical tuning note.

Start with the free tuning log now, then use it to decide which setting is actually stable enough to keep.

Download tuning log

Quick answers

Common lottery mining questions

Can a Bitaxe actually find a Bitcoin block?

Yes, but the odds are extremely small. A Bitaxe can submit valid work like any miner, but its hashrate is tiny compared with the full Bitcoin network.

Does a solo pool improve my odds?

No. A solo pool helps your miner submit work and receive credit if luck hits. Your odds still come from hashrate, network difficulty, and time.

What should I upgrade first?

Start with stability: power supply, short quality cable, airflow, and a power meter. Measure before spending more money on hashrate.

Is this financial advice?

No. Block Odds Lab is an education and tooling project for hobby miners. Mining outcomes are random, and expected value is not a promise.