How to Send and Receive Bitcoin

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Let's learn how to send bitcoin to other people, even if it's on a paper wallet. We'll also find out what sweeping is, and which wallets to use.

Polkadot for Ethereans – Staking

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Polkadot for Ethereans continues. Specifically, we look at differences in staking and how each system dishes out rewards and punishments.

Solidity Development Crash Course: Finishing the Raffle Project

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Let's finish the blockchain raffle project - we'll write our random number generation function, pick the winners, and send the collected money out.

Two Point Oh: Explaining Ethereum 2.0 Validators

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Validators are the cornerstone of the Proof of Stake mechanism in the upcoming Ethereum 2.0 upgrade called Serenity. Learn all about them!

Best Ways to Protect Your Cryptocurrency Wallet

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Let's get paranoid and protect our wallets. From Ledgers to metal plaques, there's no shortage of options - but no shortage of dangers either!

Adding Web3 Logins to a Web2 App – Part 1

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Let's add the ability to log into a PHP website with a web3 crypto address

How to Call Ethereum Smart Contract Functions

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Some deployed Solidity smart contracts have functions. In this guide we'll show you how to call those functions and talk to the blockchain.

Two Point Oh: The Beacon Chain – Update March 6th 2019

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The beacon chain is at the core of Ethereum 2.0. But what does it mean? What does it do? How does it work and what is its purpose? Tune in to find out!

How to Read Bitcoin Blockchain Data on Blockexplorer?

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Blockexplorer is a tool for exploring blockchain data: blocks, transactions, addresses. In this post, we'll explain how to interpret that data.

Adding Web3 Logins to a Web2 App – Part 2

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Part 2 of the tutorial on adding Web3 logins to a Web2 app - signatures, verifications, and ajax calls galore in this edition!