[OPLIN 4cast] OPLIN 4cast #446: Blockchain

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OPLIN 4cast #446: Blockchain
July 15th, 2015

[image: blockchain logo]You have likely heard of Bitcoins, but may not have
heard too much about blockchain, the technology that makes Bitcoins work.
Blockchain is very difficult to explain in just a sentence or two. For a
quick summary, try the first Ohio Web Library article cited at the end of
this post, or if you want more information, the second article is pretty
good. Essentially, blockchain replaces a centralized authority with
distributed authority, and this idea is finding applications beyond just
cryptocurrency. It has the potential to be used in ways that could impact
libraries, such as identity verification, copyright verification, and
document preservation.

   - Everledger is using blockchain to combat fraud, starting with diamonds
   <http://techcrunch.com/2015/06/29/everledger/> (TechCrunch | Natasha
   Lomas)  "Interesting uses of blockchain technology outside the
   cryptocurrency space continue cropping up. Just this month Ascribe
   <http://techcrunch.com/2015/06/24/ascribe-raises-2-million-to-ensure-you-get-credit-for-your-art/>
   raised $2 million in seed funding for its 'notary and timestamp for
   intellectual property and creative works', which uses the blockchain to
   store and sign digital images - creating an immutable record of their
   existence and enabling copyright to be enforced on digital artworks. While
   back at Disrupt New York's startup battlefield in May there was ShoCard
   <http://techcrunch.com/2015/05/05/shocard-is-a-digital-identity-card-on-the-blockchain/>,
   a digital identity startup which stores personal identity credentials on
   the blockchain."
   - Blockchain technology: The key to secure online voting
   <https://bitcoinmagazine.com/21031/blockchain-technology-key-secure-online-voting/>
   (Bitcoin Magazine | Matthew Daniel)  "Just as Bitcoin users make
   transactions by sending the digital currency to the recipient's digital
   wallet, blockchain voting systems involve creating wallets for each
   candidate or option in an election. All voters are then allocated a digital
   'coin' that represents one vote, which they can cast by sending their
   'coin' to the wallet of their choice. As in a bitcoin transaction, the
   entire process is recorded in the blockchain public ledger, meaning that
   unlike most current elections, a voter can verify that his or her vote was
   actually counted."
   - This man says he can save Reddit with the spirit of Bitcoin
   <http://www.wired.com/2015/07/reddit-blockchain-decentralized-internet/>
   (Wired | Kevin Montgomery)  "By leveraging bitcoin's technology, a new
   blockchain-based system could ensure that content cannot be retroactively
   removed. Instead, it would simply be up to operators of nodes, or endpoints
   which display data from the distributed database, to choose which
   information they wish to hide. If any person was upset with which
   information that an operator was suppressing, they could merely switch to
   using another competing node or start their own."
   - Blockchain technology will transform the practice of law
   <https://bol.bna.com/blockchain-technology-will-transform-the-practice-of-law/>
   (Bloomberg BNA | Joe Dewey and Shawn Amuial)  "While this technology is
   only in its infancy, its application to business is developing at a rapid
   pace. With Goldman Sachs, Nasdaq and many other leading financial firms and
   companies investing hundreds of millions of dollars into blockchain
   technologies, one thing is clear - the lasting legacy of the blockchain is
   likely to be far greater than Bitcoin or any other single cryptocurrency."

 *Articles from Ohio Web Library <http://ohioweblibrary.org>:*

   - New kid on the blockchain.
   <http://web.b.ebscohost.com.proxy.oplin.org/ehost/detail/detail?sid=95cba4e5-9c10-4264-aa04-235ec4521f0b%40sessionmgr114&crlhashurl=login.aspx%253fdirect%253dtrue%2526db%253dulh%2526AN%253d101104838%2526site%253dehost-live&hid=115&vid=0&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=ulh&AN=101104838>
   (*New Scientist*, 2/21/2015 | Jacob Aron)
   - Behind the ingenious security feature that powers the blockchain.
   <http://web.b.ebscohost.com.proxy.oplin.org/ehost/detail/detail?sid=89d8f65f-8d08-4453-a279-d209a76dc3cf%40sessionmgr113&crlhashurl=login.aspx%253fdirect%253dtrue%2526db%253dbuh%2526AN%253d102783480%2526site%253dehost-live&hid=115&vid=0&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=buh&AN=102783480>
   (*American Banker*, 5/22/2015 | Chris Derose)
   - In blocks we trust.
   <http://web.b.ebscohost.com.proxy.oplin.org/ehost/detail/detail?sid=5815167d-a4f3-4e79-8bb6-485300d7d23a%40sessionmgr112&crlhashurl=login.aspx%253fdirect%253dtrue%2526db%253daph%2526AN%253d101202865%2526site%253dehost-live&hid=115&vid=0&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=aph&AN=101202865>
   (*Engineering & Technology*, March 2015, p.68-71 | Danny Bradbury)

    ------------------------------
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