Declarative Amsterdam

Idea: the Amsterdam Theorem Exchange

Hans-Dieter HiepORCID logoex-CWI, Leiden University, NLnet

In this talk, I introduce the Amsterdam Theorem Exchange: a distributed proof assistant where users on the network are able to submit formal mathematical conjectures together with a price, and – when the price is right – the system returns either with a proof or a counter-example. Also there are solvers on the network that seek valuable but outstanding mathematical problems, trying to tackle them by using human and artificial intelligence. This talk explains how and what formal methods are needed to implement this system, that subnets specialize to solve different classes of problems, and argues that the Amsterdam Theorem Exchange is more valuable than all cryptocurrency systems combined – since problems include e.g. prime factoring problems and problems of reversing cryptographic functions.

Presentation, 7 November 2025

Hans-Dieter A. Hiep is a specialist in formal methods and automated reasoning techniques, with an academic interest in mathematical logic, separation logic, dynamic logic; interactive, automated and distributed theorem proving; and operational, denotational, and axiomatic semantics of programming languages. In 2024, he finished a Ph.D. program in Computer Science at Leiden University, Leiden Institute of Advanced Computer Science (LIACS) and Centrum Wiskunde & Informatica (CWI). In 2018, he finished a M.Sc. program in Computer Science joint-degree at the Vrije Universiteit and Universiteit van Amsterdam (VU/UvA), specializing in foundations of computing and concurrency.

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