Blockchain Briefing

High Level Links about Blockchain Technology — Especially for Legal Professionals

Dazza Greenwood
ComputationalLaw.org
3 min readMay 24, 2017

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Blockchain Working Demo

Thanks to Anders Brownworth for creating this open source demo and supporting reuse by CIVICS.com as a law+technology teaching tool.

What is a “Hash”?

What is a “Block”?

What is a “Blockchain”?

What does “Distributed” mean?

What are “Tokens”?

What is “Coinbase”?

Blockchain for Lawyers

Popular media breaking it down in a way relevant to lawyers and other legal professionals:

Relevant Legislation & Statutes

Federal Legislative Definition

US House: A collaboration between law.MIT.edu and the US House on developing legislative definitions of “blockchain” and “distributed ledger technologies and systems

Enacted US Federal and Uniform State Law

The general (default) legal status of electronic signatures, contracts and other records has been established in the United States through UETA (uniform state law) and ESIGN (federal law), both of which are implementations of the UNCITRAL Model Law on Electronic Commerce.

Pending State Legislation

  • State Bill: Nevada (SB 398): establishes various provisions relating to the use of blockchain technology. (Link to bill)
  • State Bill: Arizona (H B 2417): signatures; electronic transactions; blockchain technology — Signed into law April 3, 2017. (Link to bill)

Blockchain for Legal Notice and Publicly Verifiable Evidentiary Records

General Digital Transactions Law

International Model Law

Transferable Records

The legal validity of Electronic Transferable Records (e.g. legally validating the use of electronic records for negotiable instruments, warehouse receipts, etc) was explicitly established in UETA and ESIGN but significant business, legal and technology uncertainty remains about more specific practices and rules needed to support stable use and reliance at wide-scale.

Digital Signatures, Contracts and Records

Law defining and governing digital signatures, electronic contracts, automated transactions and other electronic records or processes is important overarching legal context applicable to blockchain technology.

Building Blocks of Legal Identity and Enforceable Signatures

  • Book: Electronic Signatures in Law (4th edition, Institute of Advanced Legal Studies for the SAS Humanities Digital Library, School of Advanced Study, University of London, 2016) http://ials.sas.ac.uk/digital/humanities-digital-library/observing-law-ials-open-book-service-law/electronic-signatures
  • Research: Blockchain as Key Legal Identity Cross-Boundary Infrastructure Service
  • Legal Hack: Modern Blockchain-Based Digital Signature Prototype: Massachusetts Legal Hackers Mock Trial
  • Report: In the 1990’s, the ABA Digital Signature Guidelines provided a conceptual framework for legally understanding and working with cryptographically based digital signatures. This document provides an excellent overview of how hash digests and public-private key cryptography can be used to legally execute a digital signature, though some of the more speculative content about a possible role of “trusted third party” new models of business to provide “certification authority” functions did not pan out.

Evidence of Electronic Signatures and Records

Help Make This (even) Better

The above article is based on the content outline of a CIVICS.com briefing I provided earlier today for in-house counsel of General Electric, a wonderful innovation company headquartered in Boston, Massachusetts.

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