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Nous sommes fiers d'annoncer la release de la première version majeure de Liquidity, le langage de smart contracts et son outillage. Parmi les fonctions phares : multiples points d'entrée, système de contrats modulaire, polymorphisme et inférence de type, syntaxe ReasonML pour une plus grande ad...

This talk explores the design of Ontology, a permissions management service developed at Jane Street. The design of the system is language-oriented in two different ways: Internally, the state of the system is represented as a sequence of declarations in a dependently-typed language lifted straight out of type theory. This language is the unifying principle behind a deductive database, its query language, and the representation of requested state changes that together form the core of the system. Externally, in the user interface for the system, the internal language is hidden everywhere, having been rendered in natural language (English). Because of this rendering strategy, key elements of the user interface are at once structure-editors for the internal language as well as natural language forms that allow even technically unsophisticated users to construct permissions requests and queries. Presented by: Nathan Linger Nathan has been a developer at Jane Street since 2008, working on a variety of software projects. He holds a PhD in Computer Science from Portland State University.

Liquidity version 1.0 We are pleased to announce the release of the first major version of the Liquidity smart-contract language and associated tools. Some of the highlights of this version are detailed below. Multiple Entry Points In the previous versions of Liquidity, smart contracts were limited ...

Nous sommes fiers d’annoncer la première release de Techelson, moteur d’exécution de tests pour Michelson. Les programmeurs Liquidity peuvent également l’utiliser. Voir Techelson, a test execution engine for Michelson....

We are pleased to announce the first release of Techelson, available here. Techelson is a Test Execution Engine for Michelson. It aims at testing functional properties of Michelson smart contracts. Make sure to check the user documentation to get a sense of Techelson's workflow and features. For Liq...

Smart contracts calls already provide a built-in authentication mechanism as transactions (i.e. call operations) are cryptographically signed by the sender of the transaction. This is a guarantee on which programs can rely. However, sometimes you may want more involved or flexible authentication sch...

Jane Street is sponsoring this year’s MakeMIThackathon, and we wanted to create a prize forthe winners that would do justice to the maker spirit of thecompet...

At Jane Street, over the last few years, we’ve been increasingly exploring machine learning to improve our models. Many of us are fascinated by the rapid imp...

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