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Towards Contract Modules for the Tezos Blockchain (Short Paper)

Authors Thi Thu Ha Doan, Peter Thiemann

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Author Details

Thi Thu Ha Doan
  • University of Freiburg, Germany
Peter Thiemann
  • University of Freiburg, Germany

Funding

  • Doan, Thi Thu Ha: supported by a grant from the Tezos foundation.

Cite AsGet BibTex

Thi Thu Ha Doan and Peter Thiemann. Towards Contract Modules for the Tezos Blockchain (Short Paper). In 3rd International Workshop on Formal Methods for Blockchains (FMBC 2021). Open Access Series in Informatics (OASIcs), Volume 95, pp. 5:1-5:9, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)
https://doi.org/10.4230/OASIcs.FMBC.2021.5

Abstract

Programmatic interaction with a blockchain is often clumsy. Many interfaces handle only loosely structured data, often in JSON format, that is inconvenient to handle and offers few guarantees. Contract modules provide a statically checked interface to interact with contracts on the Tezos blockchain. A module specification provides all types as well as information about potential failure conditions of the contract. The specification is checked against the contract implementation using symbolic execution. An OCaml module is generated that contains a function for each entry point of the contract. The types of these functions fully describe the interface including the failure conditions and guarantee type-safe and sometimes fail-safe invocation of the contract on the blockchain.

Subject Classification

ACM Subject Classification
  • Software and its engineering → Specification languages
Keywords
  • contract API
  • modules
  • static checking

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