Chainlink data feeds are the fastest way to connect a smart contract to real time market data. These feeds allow…
Solidity
Use a Chainlink Oracle in your smart contract
The Chainlink ecosystem system provides an API which allows you to connect your smart contract to a suite of decentralized…
Deploy a contract to the Binance Smart Chain
Deploy a contract to the Binance Smart Chain. The Binance Smart Chain (BSC) is a block chain that supports smart…
How do the Uniswap Solidity smart contracts work?
In this tutorial we will discuss how the Uniswap automated market maker Solidity smart contracts work. We will discuss the…
Access private data on the Ethereum blockchain
In this tutorial I will explain how to access private data on the Ethereum blockchain. All data on the blockchain…
Reentrancy attack in a Solidity smart contract
A reentrancy attack in a Solidity smart contract is a common exploit. These attacks can completely drain your smart contract…
Covered call smart contract in Solidity
Below is a Solidity covered call smart contract. The seller deposits tokens into the contract and earns a fee selling…
Create a multi sig (signature) wallet in Solidity
Create a multi sig (signature) wallet in Solidity. Most cryptocurrency wallets need one signature (private key) to sign and process…