An overview on smart contracts | Evolution and development

An overview on smart contracts | Evolution and development
An overview on smart contracts | Evolution and development

Smart contract technology has undergone significant development since its inception, changing the way agreements and transactions are carried out on blockchain networks. Originally proposed by Nick Szabo in the 1990s, smart contracts are self-executing contracts with the terms of the contract written directly into the code. When blockchain platforms such as Ethereum emerged, they provided the necessary infrastructure to enable these contracts to be implemented. The evolution of smart contracts can be divided into three key phases:

First generation: Basic functions

The first generation of smart contracts focused mainly on simple functions such as transferring digital assets and meeting basic conditions. Bitcoin, a pioneering cryptocurrency, enabled basic scripting functions that enabled conditional transactions. However, these scripts were limited in scope and lacked the flexibility needed for more complex agreements.

Example: Bitcoin’s Script Language

Bitcoin’s scripting language has enabled the implementation of basic smart contracts, such as multi-signature wallets, where multiple parties must agree to a transaction before it can be executed.

Second generation: Turing complete contracts

The second generation brought significant progress with the introduction of Ethereum in 2015. The Ethereum smart contract platform introduced the concept of Turing complete programming, allowing developers to write complex and programmable contracts using Solidity or other programming languages. This marked a major shift towards more versatile and powerful smart contracts.

Example: Decentralized Applications (DApps)

Ethereum has enabled the development of DApps, which are applications running on the blockchain with smart contracts at their core. One prominent example is decentralized finance (DeFi) platforms that offer borrowing, lending and trading services without traditional intermediaries.

Third generation: Scalability and interoperability

The third generation addresses the scalability and interoperability issues that have arisen with the increased adoption of blockchain networks. New platforms like Polkadot, EOS and Cardano are designed to offer better performance and connectivity between different blockchains.

Example: Polkadot’s Parachains

Polkadot’s ecosystem allows projects to run their blockchains (parachains) while benefiting from the security and interoperability provided by Polkadot’s main chain, enabling more efficient and connected smart contracts.


In conclusion, smart contract technology has evolved significantly since its inception. From simple scripts for Bitcoin to sophisticated Turing-complete contracts on Ethereum and the pursuit of scalability and interoperability in third-generation platforms, smart contracts continue to shape the decentralized environment and revolutionize various industries with their transparency, efficiency, and automation capabilities.

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