Blockchain 3.0 or Web 3.No? was just published by Debbie Ginsberg in the September/October 2017 issue of AALL Spectrum, Volume 22, No. 1, P. 36 -39.
http://epubs.aallnet.org/i/862080-aall-spectrum-september-october-2017-volume-22-number-1/37?
The article begins with a quick introduction to blockchains including a comic representation. Blockchain uses in the law profession are explored briefly including smart contracts and self-executing smart contracts. Government interest in blockchains is also briefly explored. The use of blockchains for education is mentioned including putting transcripts and credentials on blockchain. Libraries are mentioned as possibly using blockchain for recording circulation and provenance of archival items. The article wraps up with a couple of possible issues that could cause difficulty in blockchain implementation.