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Bennet.org

Detailed guides, interactive tutorials, open source experiments, and more for the discerning Bitcoiner.

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How to destroy bitcoin (and what happened to 107 burned coins)

In May 2026 someone deliberately destroyed 107 BTC. Here's how burning bitcoin actually works, and what the chain says about where they came from.

Coldcard and the limits of “don't trust, verify”

A technical blunder left five years of Coldcard seeds guessable. On who's to blame, why I don't buy blaming AI, and what it means for self-custody.

How to buy your first bitcoin

A step-by-step beginner's guide to buying your first bitcoin - from someone you know, in person with Vexl, or on Strike - and withdrawing it to a wallet you control.

What if the FCA's knowledge test applied equally to fiat banking?

Before you can buy Bitcoin in the UK, the FCA makes you pass a knowledge test on its dangers. So what would that test look like if the same standard were applied to opening an ordinary bank account? Take the quiz.

How the Lightning Network actually works

Lightning settles millions of payments without touching the blockchain. Interactive diagrams explain payment channels, multi-hop routing, and the liquidity puzzle that makes it all work.

Silent Payments: a hands-on guide to better Bitcoin privacy

A hands-on guide to Silent Payments: set up a reusable, private Bitcoin address in Sparrow, understand the scanning key, and see how BIP-352 really works.

How to buy bitcoin privately on Peach's peer-to-peer exchange

A step-by-step guide to buying bitcoin privately using Peach, a mobile peer-to-peer exchange. No security deposit, no account sign-up - just multisig escrow on your phone.

Buying bitcoin without KYC: your options in 2026

Why and how to buy bitcoin privately - a comparison of the main non-KYC options including Bisq, Peach, and Vexl, and how to pick between them.

The Bitcoin custody tiers: from ETFs to multisig

Self-custody of Bitcoin exists on a spectrum. A practical six-tier framework for understanding custody - from ETFs to multisig - so you know where you are, what tradeoffs each tier involves, and how to move deliberately.

What is Bitcoin and how does it work?

A first-principles introduction to Bitcoin. Interactive diagrams explain the double-spend problem, hashing, mining, keys, transactions, and fixed supply.

The FCA has decided that explaining UTXOs is a financial promotion

UK financial promotions rules mean British users are blocked from accessing hardware wallet documentation - including articles on UTXOs, public keys, and self-custody.

How to buy bitcoin privately on Bisq's decentralised exchange

A step-by-step guide to buying bitcoin privately using Bisq's peer-to-peer exchange. No identity verification, no account sign-up - just multisig escrow over Tor.

Proof of work: what Bitcoin mining really does

What do Bitcoin miners actually do? An interactive exploration of hashing, difficulty adjustment, and why proof of work makes Bitcoin sound money.

Gold vs Bitcoin chart

Compare Bitcoin and gold across time using both price ratio and indexed performance views.

Hashrate converter

Hashrate is how many cryptographic hashes a miner can compute each second. Convert instantly between H/s, kH/s, MH/s, GH/s, TH/s, PH/s, EH/s, and ZH/s.

Bitcoin DCA calculator

Dollar cost averaging (DCA) is a simple way to invest gradually without obsessing over timing. This calculator compares a Bitcoin DCA plan against lump sum investing.

Solo block tracker

Track all Bitcoin blocks mined by solo miners, with a full breakdown of the tech they used to do it. Covers Solo CK, Public Pool, Braiins Solo, and more.

Bitcoin Rainbow chart

The Bitcoin Rainbow Chart is a long-term, logarithmic view of Bitcoin’s price history, designed to show broad market patterns.

“What if I'd bought Bitcoin?” calculator

This tool lets you pick a date, enter an amount in your chosen currency, and see how that position would've performed - from the moment you bought to today.

SATS to BTC calculator

One satoshi (or sat) is the smallest unit in Bitcoin: 100,000,000 sats = 1 BTC. That's one hundred millionth of a bitcoin.

Bitcoin solo mining calculator

This tool estimates your odds of mining a Bitcoin block with your own hashrate. Solo mining is basically a lottery: you’re hashing against the entire network.

Hierarchical determinism: how Bitcoin's HD wallets are born

A visual, practical walkthrough of how your recovery phrase becomes real Bitcoin addresses.

Bitcoin block time calculator

If you need to know when a specific Bitcoin block was mined - or, conversely, which block a specific moment falls in - you're in the right place.

How to hold Bitcoin tax-free in a Stocks & Shares ISA

If you are (a) a UK citizen, (b) a stocks & shares ISA holder, and (c) curious about holding Bitcoin in a tax-efficient manner, this page is for you.

The 8 best Bitcoin books to read in 2025

Discover the 8 best Bitcoin books to read in 2025 - from beginner primers to deep dives into history, economics, and Bitcoin’s global impact.

Private, serverless Bitcoin donations: an open-source library

A simple, self-custodial way to accept private, on-chain Bitcoin payments using XPUBs and serverless functions. Free, with no third-party gateways.

How secure is your Bitcoin wallet's mnemonic seed phrase?

What makes your Bitcoin wallet's seed phrase secure? Explore entropy, checksums, and BIP39 in this hands-on, interactive guide to mnemonic generation.

How to accept Lightning payments with LNBits and Cloudflare tunnels

In this guide I explore how to accept Lightning payments with a static QR code. It's free, low maintenance, privacy-centric, and requires no trusted third parties.

Build & run a full Bitcoin node with a Raspberry Pi 5

Today I'll show you how to build a Bitcoin node using a Raspberry Pi 5, no external USB drive or monitor required. It's low maintenance and configurable via web browser.

Genesis post

Everyone starts out thinking they're late to Bitcoin. I certainly did. The moment it clicks, though, you often realise that the opposite is true. You are early.