Basics of Smart Contracts: What Can They Do For You?

Smart contracts, first introduced by cryptography expert Nick Szabo, are integral to various systems within the blockchain and cryptocurrency spheres. These digital agreements, programmed on the blockchain, are self-executing contracts designed to facilitate transactions without third-party involvement or external enforcement. Blockchains like Ethereum are popular platforms for smart contract programming and execution.

The Working Principle of Smart Contracts

A smart contract follows the ‘if/when x happens, then execute y’ logic, with guaranteed execution given the right inputs, similar to a vending machine. Despite their association with blockchain, smart contracts are not intended to replace traditional contracts but aid in creating a more decentralised world.

Practical Applications of Smart Contracts

Smart contracts find practical application in numerous sectors, offering efficient and cost-effective workflows. In Supply Chain Management, they automate transactions, inventory management, and provenance, lowering fraud and improving efficiency. In DeFi, they facilitate transparent and automated lending, borrowing, and other services. Other applications include asset tokenisation, insurance, voting systems, intellectual property rights management, gaming and NFTs, and dispute resolution.

Guide to Writing Smart Contracts

Writing a smart contract involves defining the contract’s goals, selecting an appropriate blockchain platform, setting up the development environment, coding, testing, and deploying the contract on the blockchain. Interaction with the deployed contract, security audits, and continuous monitoring and updates are crucial. It’s worth noting that a solid understanding of programming, blockchain concepts, and the chosen platform are essential for writing effective smart contracts.



In conclusion, smart contracts harness blockchain technology to automate and ensure accurate and transparent contractual obligations without intermediaries. They represent a cost-efficient and reliable solution for a variety of industries.