The creator of smart contracts, Nick Sabow's vision will change the digital economy

In the development history of digital currencies and blockchain technology, Nick Szabo is one of the most influential theorists. His concept of smart contracts, proposed in the 1990s, laid the foundation for modern cryptocurrencies and the blockchain industry, and continues to guide technological innovation today.

The Future Vision Nick Szabo Showed in the 1990s: The Essence of Smart Contracts

Nick Szabo’s theory of smart contracts was already systematized in the 1990s, long before the advent of blockchain technology. His innovative idea was to fundamentally expand the functions of electronic payment systems. Traditional payment methods like POS terminals only processed transactions, but Szabo envisioned a system where contract conditions are embedded directly into protocols and can be executed automatically.

His theory aimed to embed contract conditions into hardware and software, making default or breach of contract physically and economically nearly impossible. The idea of “trust not in humans but in code” was highly advanced for its time.

From BitGold to Bitcoin: The Theoretical Lineage of Decentralized Currency

Szabo’s vision materialized in the form of BitGold, a decentralized digital currency mechanism he proposed in 1998, which directly influenced the development of Bitcoin. Szabo has explicitly stated he is not Satoshi Nakamoto, but the structural similarities between BitGold and Bitcoin demonstrate how fundamental Szabo’s theories were.

Of particular note is that both systems employ the “Proof of Work” mechanism. When Satoshi Nakamoto launched Bitcoin in 2009, it is believed he learned much from Szabo’s research. While the blockchain technology itself differs, the core principle of building trust through decentralization originates from Szabo’s ideas.

Ethereum and DeFi Realizing Nick Szabo’s Ideals

The full implementation of smart contracts came with the advent of Ethereum. By using a Turing-complete language, Ethereum enabled the execution of complex contracts on the blockchain, as Szabo envisioned. This transformed his philosophy from mere theory into practical technology.

Ethereum’s emergence rapidly expanded the scope of smart contract applications. Automation became possible across finance, real estate, legal, and supply chain sectors.

The explosive growth of the decentralized finance (DeFi) sector proves how practical Szabo’s ideas are. Lending protocols, automated market makers (AMMs), derivatives platforms, and nearly every element of the DeFi ecosystem rely on smart contracts. Individuals and institutions can access financial markets directly, without traditional intermediaries, embodying Szabo’s concept of “trust through code.”

Industry-Wide Transformation Enabled by Smart Contracts

The automation potential unlocked by Szabo’s theories extends beyond finance. In corporate governance, smart contracts are bringing revolutionary changes. Shareholder voting, dividend distribution, and capital allocation are now automatically executed through transparent and efficient protocols.

The tokenization of assets, evolving from early ICOs, would not have been possible without Szabo’s smart contract theories. Real estate, art, intellectual property, and other assets are now digitized and divisible for buying and selling.

Supply chain management has also benefited from smart contracts, with transparent tracking of products. Consumers can verify origins and quality, significantly reducing fraud and counterfeit risks.

Evolving Smart Contract Strategies in the Age of AI and IoT

Szabo’s vision continues to evolve. The integration of artificial intelligence (AI) with smart contracts allows contracts not only to execute conditions automatically but also to make optimal decisions based on circumstances.

The combination of Internet of Things (IoT) and blockchain opens new horizons for Szabo’s theories. Data generated automatically from IoT sensors can trigger smart contract execution, enabling autonomous operations in smart homes, autonomous vehicles, and automated supply chains. For example, a sensor detecting low fuel in an autonomous vehicle could automatically trigger a payment smart contract at a refueling station, becoming a reality.

Nick Szabo’s Legacy: A Compass for the Digital Revolution

Szabo’s theory of smart contracts is not just a historical contribution but a core element of ongoing technological innovation. Nearly all components of the cryptocurrency industry—Bitcoin, Ethereum, DeFi, tokenized assets—trace their roots back to his ideas.

Today, as industries continue exploring blockchain applications, Szabo’s research remains a living guide. From AI and IoT integration to enterprise blockchain deployment and cross-chain interoperability, his smart contract theories underpin all cutting-edge projects.

The future of the digital economy is shaped by Szabo’s vision from the 1990s and the ongoing efforts of those working to realize it with modern technology.