Wrapped and Stacked: 'Smart Contracts' and the Interaction of Natural and Formal Languages

European Review of Contract Law, Volume 14, Issue 4, Pages 307–343, ISSN (Online) 1614-9939, ISSN (Print) 1614-9920, DOI/10.1515/ercl-2018-1023.

28 Pages Posted: 26 Dec 2018

See all articles by Jason G Allen

Jason G Allen

Humboldt-Universität zu Berlin Großbritannien-Zentrum; CCAF; University of Tasmania School of Law

Date Written: August 7, 2018

Abstract

This article explores ‘smart contracts’ from first principles: What they are, whether they are properly called ‘contracts’, and what issues they raise for national contract law. A ‘smart’ contract purports to record contractual promises in language which is both intelligible to human beings and (ultimately) executable by machines. Rather than their automation of contractual performance, I argue that the most important aspect of the law and legality of smart contracts is the formalization of contracting language that they entail. Rather than taking a doctrinal approach focused on the presence of traditional indicia of contract formation, I examine the nature of contracts as legal entities created by words and documents. In most cases, smart contracts will be ‘wrapped in paper’ and nested in a national legal system. Borrowing from the idiom of computer science, I introduce the term ‘contract stack’ to highlight the complex nature of contracts as legal entities incorporating different ‘layers’, including speech acts by the parties in both natural and formal languages as well as mandatory legal rules. It is the interactions within this contract stack that will be most important to the development of contract law doctrines appropriate to smart contracts. To illustrate my points, I explore a few issues that smart contracts might raise for English contract law. I touch on the questions of illegality, jurisdiction, and evidence, but my focus in this paper is on exploring issues in contract law proper. This contribution should be helpful not only to lawyers attempting to understand smart contracts, but to those involved in coding smart contracts — and writing the languages used to code them.

Keywords: Smart Contracts, Social Ontology, Legaltech, Contractual Interpretation, Contract Law, Documentality

Suggested Citation

Allen, Jason G, Wrapped and Stacked: 'Smart Contracts' and the Interaction of Natural and Formal Languages (August 7, 2018). European Review of Contract Law, Volume 14, Issue 4, Pages 307–343, ISSN (Online) 1614-9939, ISSN (Print) 1614-9920, DOI/10.1515/ercl-2018-1023. , Available at SSRN: https://ssrn.com/abstract=3297425 or http://dx.doi.org/10.2139/ssrn.3297425

Jason G Allen (Contact Author)

Humboldt-Universität zu Berlin Großbritannien-Zentrum ( email )

Mohrenstr. 60
Berlin, Berlin 10117
Germany

CCAF ( email )

10 Trumpington Street
Cambridge, CB21QA
United Kingdom

University of Tasmania School of Law ( email )

Private Bag 89
Hobart
Tasmania, 7001
Australia

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