Smart contracts are self-executing, tamper-proof digital contracts that run on blockchain technology, with the terms of the agreement directly written into code.

Track transactions, verify wallet balances, and explore blocks. This beginner’s guide shows you exactly how to use any blockchain explorer.

Double-spending is the act of spending the same cryptocurrency more than once. Think of it like having a digital dollar and being able to use it to buy a virtual coffee and then, in a sneaky move, use that same dollar to purchase a virtual sandwich at the same time.