Natural Language Programming

Crack the Code.

Lexon is a new type of program language that anyone can read.

Programs used to be behind an hermetic wall. Most of us had to trust other people to create, validate, interprete and maintain programs for us. Not any more.

Lexon is the next generation of program language: human readable like natural language.

Lexon can be used to describe agreements and business logic. It was designed to make the code of blockchain smart contracts readable for non-programmers.

• Regarding clarity, it goes back to the original concept of Smart Contracts.

• For auto-execution Lexon utilizes blockchains in a truly agnostic way.

• For safety, it surpasses existing blockchain languages by built-in formal verification.

⇩ Lexon Code

LEX Escrow. Chapter: Pay In. A Payer pays an Amount into Escrow and appoints the Payee and the Arbiter. Chapter: Pay Out. The Arbiter or the Payer may pay the Escrow to the Payee. Chapter: Pay Back. The Arbiter or the Payee may pay the Escrow to the Payer.

↑ A complete Lexon example

① a legal contract

The above is a valid legal contract. This can be surprising to laymen but is obvious for legal professionals. The reason is that there is no style requirement for a text to pass as a valid contract. There is a requirement though that a contract clearly documents a meeting of the minds. This is where other smart contract languages fall short, for almost all jurisdictions.

② a blockchain smart contract

With one click, the above code can be compiled to a blockchain smart contract and deployed to a blockchain, e.g. to the Ethereum mainnet. This makes it untamperable and auto-executing. No-one can stop this agreement from performing. But the blockchain is optional. Lexon code is useful in many trustful situations.

③ transparent to all

Business poeple, legal professionals, regulators and really anyone interested can take part in crafting, debating and voting on smart contracts, DAOs, blockchain governance and bricks-and-mortar TOS. This allows lawyers, attorneys and judges to reason about smart contracts without getting involved into a battle of experts. A complete layer of indirection is taken out.

Single-Source Digital Contracts.

Lexon merges law and automation. The legal and the program text are ONE.

A high proporation of legal prose of commercial contracts can be translated into useful blockchain code. The remainder that is purely non-functional text, Lexon ignores. Importantly, there is only one document. Lexon code and non-functional text are freely mixed. Lexon is part of the overall expression of the contract. The Lexon compiler analyzes each sentence to automatically tell apart what is what.

Lexon does not aim to make every legal contract a blockchain smart contract. Instead, vice versa, the ambition is to be able to make every smart contract as legal as possible. There is no 100% guarantee as any legal contract - blockchain or not - can be thrown out in court, being interpreted in unforseen ways. However, the direction from blockchain to legal - instead of vice versa - is the more modest and sensical approach. Arguments regarding the required bluriness of contracts are therefore inherently moot.

⇨ show code example

Lexon Whitepaper


A language and virtual machine2 is proposed to allow lawyers, lawmakers and judges to read and write legally correct smart contracts3 that can build on comprehensive legal code libraries and can express and adjust to court decisions, fictions, changes in regulations, arbitration and the differences between jurisdictions ...

⇨ Get the 2017 Lexon whitepaper as PDF.

Lexon Book

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⇨ Get the book.

Lexon is free and open source.

Lexon is created and distributed by the Lexon Foundation under Open Source license.

⇨ Explore and download the source code.

Lexon Demo Editor

Try it live, explore examples, deploy a smart contract to a chain in minutes.

⇨ Lexon Online Editor and Examples.

(c) 2019-20 Lexon Foundation