“Dash (cryptocurrency)”的意思、由来-开放百科全书

Dash is an open source cryptocurrency and is a form of decentralized autonomous organization (DAO) run by a subset of users, called "masternodes". It is an altcoin that was forked from the Bitcoin protocol. The currency permits fast transactions that can be untraceable.

History

The currency was launched in January 2014 as "Xcoin" by Evan Duffield, as a fork of the Bitcoin protocol.^[1]^[1] It is an altcoin and in its early days it was subject to pump and dump speculation.^[2] It was rebranded as Darkcoin^[4], which received press from the media as being used in dark net markets.^[3] In March 2015, it rebranded again with the name Dash as a portmanteau of 'digital cash'.^[2] As of August 2016, Dash is no longer used in any major dark net markets worth noting.^[4]

In early 2017 Duffield, who lived in the Phoenix area, and some other people working on Dash took space in a business incubator at Arizona State University.^[5] The Dash DAO later funded a blockchain research lab at ASU.^[6]

Design and governance

Dash was designed to allow transactions quickly and to have a swift governance structure in order to overcome shortfalls in Bitcoin.^[2]

Governance

Governance is handled through a form of decentralized autonomous organization in which decisions are made on a blockchain via masternodes. Masternodes perform standard node functions like hosting a copy of the blockchain, relaying messages, and validating transactions on the network, and in addition act as shareholders, voting on proposals for improving Dash's ecosystem. Along with masternodes, the system includes standard nodes and miners.^[9]^[10]

Running a masternode requires ownership of 1000 Dash. Masternodes are also required to have a static IP address and meet minimum requirements for CPU, RAM, disk space and network bandwidth.^[10]

A proof of service protocol ensures that masternodes have the most current blockchain protocol and are online.^[10]

The system's decentralization has been criticized due to a mishap allowing too many coins being distributed at release, concentrating the wealth and giving a small group disproportionate power in decisions over the currency’s future.^[7]

Consensus

As of 2018 coins were mined using a proof of work algorithm with a hash function called "X11", with eleven rounds of hashing, and the average time to mine a coin was around two a half minutes.^[9]

Transactions

Masternodes provide two additional kinds of transactions. "InstantSend" bypasses mining and instead requires a consensus of masternodes to validate a transaction, speeding transactions.^[2]^[9] "PrivateSend" is intended to make transactions untraceable; it mixes participating users' unspent Dash before executing a transaction.^[9]^[10]

In 2018 the e-commerce payment system company Alt Thirty Six (Alternative36, Inc.) began offering electronic payments in Dash for companies in the legal cannabis industry in the United States.^[6]

Dash-funded organizations

The Dash DAO uses the 10% it receives from mining to invest as the DAO chooses.^[10]

References

1. ^{{cite news |title=Bitcoin may be king, but Ripple dark horse in crypto race |url=https://www.reuters.com/article/us-cryptocurrency-2017-factbox/bitcoin-may-be-king-but-ripple-dark-horse-in-crypto-race-idUSKBN1ES1PT |work=Reuters |date=January 3, 2018}}
2. ^¹²³{{cite web|url=http://fortune.com/2017/06/26/bitcoin-blockchain-cryptocurrency-market/|title=Can Bitcoin’s First Felon Help Make Cryptocurrency a Trillion-Dollar Market?|last1=Eha|first1=Brian|date=26 June 2017|website=Fortune|language=en}}
3. ^{{Cite news|url=https://www.wired.com/2014/11/darkcoin-and-online-drug-dealers/|title=Online Drug Dealers Are Now Accepting Darkcoin, Bitcoin's Stealthier Cousin|work=WIRED|access-date=2018-11-18|language=en-US}}
4. ^¹{{Cite news|url=https://motherboard.vice.com/en_us/article/jpgv8k/monero-cryptocurrency-dark-net-drug-dealers-hope-more-anonymous-than-bitcoin-alphabay|title=Meet Monero, the Currency Dark Net Dealers Hope Is More Anonymous Than Bitcoin|date=2016-08-23|work=Motherboard|access-date=2018-11-18|language=en-us}}
5. ^{{cite web |title=Dash Open House |url=https://economicdevelopment.asu.edu/calendar/dash-open-house |publisher=Arizona State University |archiveurl=https://web.archive.org/web/20170820042811/https://economicdevelopment.asu.edu/calendar/dash-open-house |archivedate=August 20, 2017 |date=March 30, 2017}}
6. ^¹{{cite web |last1=Moore |first1=Heather |title=Cryptocurrency Dash aims to give mainstream money a run |url=http://www.azfamily.com/story/38953026/cryptocurrency-dash-aims-to-give-mainstream-money-a-run |website=3TV/CBS5 |language=en |date=24 Aug 2018}}
7. ^¹{{cite news |last1=Orcutt |first1=Mike |title=The top 12 cryptocurrencies and what they are—and aren’t—good for |url=https://www.technologyreview.com/s/610835/the-top-12-cryptocurrencies-and-what-they-are-and-arent-good-for/ |work=MIT Technology Review |date=April 25, 2018 |language=en}}
8. ^{{cite news |last=Glüsing |first=Jens |title=Nichts zu essen, aber kostenlos Benzin |url=http://www.spiegel.de/wirtschaft/soziales/venezuela-nichts-zu-essen-aber-kostenlos-benzin-das-plant-juan-guaido-a-1251621.html |work=Der Spiegel |date=February 2, 2019 |language=de}}
9. ^¹²³⁴{{cite book |last1=Lee |first1=David |last2=Low |first2=Linda |date=21 Jun 2018 |title=Inclusive Fintech: Blockchain, Cryptocurrency And ICO |url=https://books.google.co.uk/books?id=HCpjDwAAQBAJ&pg=PA219|location=Singapore |publisher=World Scientific |page=219 |isbn=9789813238657}}
10. ^¹²³⁴{{cite book |last=Prusty |first=Narayan |date=27 Apr 2017 |title=Building Blockchain Projects |url=https://books.google.co.uk/books?id=80EwDwAAQBAJ&pg=PA19|location=Birmingham, UK |publisher=Packt |pages=19–21 |isbn=9781787125339}}