Smart contracts can get very expensive. Here are some tips on how to minimize their gas cost and make them both cheaper to deploy and cheaper to use.
Lisk has a critical vulnerability which lets you steal millions - if you have millions
GraphQL is a powerful relationship-focused database often used by social networks like Facebook. What if we could search Ethereum like that, too? We can!
How to start developing for Ethereum safely and quickly? What is Ganache and how can it help? How do we set up virtual blockchains and connect tools to it?
What is an Ethereum testnet? How do we use Ropsten, Kovan, or Rinkeby and what for? What's a private blockchain good for and what is Testrpc?
PoW, PoS, dPoS, what is all this nonsense? Isn't it all just mining anyway? Read this post to learn the difference between these approaches.
Capture the Ether is a Solidity game in which you go through challenges to learn about coding and hacking Solidity, as well as how to avoid common pitfalls
Some deployed Solidity smart contracts have functions. In this guide we'll show you how to call those functions and talk to the blockchain.
Let's finish the blockchain raffle project - we'll write our random number generation function, pick the winners, and send the collected money out.
In this tutorial we'll start building a raffle on the blockchain with unique entries and an entrance fee. Earnings will be donated to charity!
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