Thursday 18 August 2016

Ethereum Prediction Market Service Takes First Steps With Beta Launch

A new prediction market platform is set to go live on the ethereum network this week.
Called Gnosis, the project will allow users to wager on future events by asking and answering questions about the outcome of sports games or elections. However, the platform's creators envision Gnosis one day serving as a platform for a wide range of user-created prediction markets.
An example touted by the team is a sample platform called Hunchgame, which would see Gnosis being used as a basis for a prediction market centered on celebrity gossip.
One of the more experimental use cases for public blockchains, decentralized prediction markets combine new technology with an old concept, one that in the past has seen centralized versionsshuttered by governments or unable to hit critical mass due to regulatory restrictions.
The idea is that by using a decentralized network and uncensorable money, the experimental efforts can continue without outside interference. Prediction market advocates also see the platforms as an opportunity to surface information that otherwise might not be made public for use by academics and decision-makers.
With the launch, Gnosis will join Augur as the latest effort to create a decentralized prediction market. As Augur has already launched in beta and held a crowdsale, some observers view the two companies as rivals.
But, there are aspirational and technical differences between the two platforms. For example, questions are resolved by oracles on Gnosis and Augur in different ways.
While Augur uses many oracles to determine the outcome of an event, Gnosis uses a mechanism whereby only one or a few oracles provide the outcome, a feature they say will lead to faster validation.
If any one oracle disagrees with the conclusion, the decision falls to a pool of oracles to decide as a "last resort".
Gnosis founder Martin Köppelmann further says that Gnosis boasts features Augur doesn’t have, such as a long-term plan for incorporating futarchy, an experimental form of government that uses prediction markets.
Launch details
Gnosis was working on ethereum for a few months earlier this year, but the team behind it eventually pulled it down to an internal test network to experiment with a new system.
This time, they are launching with a revised version, one where content isn’t so tightly controlled by administrators.
If the "market" is built around the question, “Will Hillary Clinton win the 2016 presidential election?", for example, oracles settle on the final answer and provide validation of the outcome.

Gnosis decentralized autonomous strategist Matt Liston told CoinDesk: