<p>One solution is to use Nash equilibrium in order to force people to cooperate.</p>

<p>The concept is quite simple. Both the seller and the buyer make a deposit.</p>

<p>If the entire buy/sell process goes fine they can recover their deposit, if it don't they both lose their deposit.</p>

<p>So it isn't profitable to go away with the money without sending the good nor to get the good without releasing the payment to the seller.</p>

<p>This solution has already been discussed. If you google bitcoin+nash+equilibrium you will find more informations.</p>

CC BY-SA 3.0
2014-07-27T06:29:01.450Z
2014-07-28T13:45:11.840Z
2014-07-28T13:45:11.840Z
Jan Moritz
<p>We are currently using notaries as a third party in a multisig transaction with arbiters serving as dispute resolution if there is an issue. You can read more at: <a href="https://github.com/OpenBazaar/OpenBazaar/wiki" rel="nofollow">https://github.com/OpenBazaar/OpenBazaar/wiki</a></p>

CC BY-SA 3.0
2014-07-27T21:09:10.867Z
2014-07-27T21:09:10.867Z
Brian Hoffman
<p>Another way is with an arbitrator and multi-sig addresses. Payment is made to a multi-sig address where the sender, receiver, and an arbitrator each have a key. If the transaction goes well the sender and buyer each sign. In case of a dispute the arbitrator rules and signs either with the buyer to pass the money on or with the sender to return the money.</p>

CC BY-SA 3.0
2014-07-27T15:11:01.307Z
2014-07-27T15:11:01.307Z
Keith Wolters
<p>Since <a href="http://nxt.org/cryptocurrency/faqs-about-nxt-cryptocurrency" rel="nofollow">NXT</a> and <a href="https://openbazaar.org/" rel="nofollow">OpenBazaar</a> are building a decentralized marketplace, how would this work since there is no middle party to mediate if an issue arises?</p>

<p>What are some proposed solutions to a decentralized marketplace so far?</p>

<nxt><marketplace><openbazaar>
How would the OpenBazaar or NXT decentralized marketplace / eBay / Craigslist work?
Patoshi パトシ
# How would the OpenBazaar or NXT decentralized marketplace / eBay / Craigslist work?

(Asked by: username_0 on 2014-07-08)

Since [NXT](http://nxt.org/cryptocurrency/faqs-about-nxt-cryptocurrency) and [OpenBazaar](https://openbazaar.org/) are building a decentralized marketplace, how would this work since there is no middle party to mediate if an issue arises?

What are some proposed solutions to a decentralized marketplace so far?

**Tags:** nxt, marketplace, openbazaar


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## 3 answers

### Answer by username_1 on 2014-07-27. Score: 2 | Accepted answer

One solution is to use Nash equilibrium in order to force people to cooperate.

The concept is quite simple. Both the seller and the buyer make a deposit.

If the entire buy/sell process goes fine they can recover their deposit, if it don't they both lose their deposit.

So it isn't profitable to go away with the money without sending the good nor to get the good without releasing the payment to the seller.

This solution has already been discussed. If you google bitcoin+nash+equilibrium you will find more informations.


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### Answer by username_2 on 2014-07-27. Score: 2

We are currently using notaries as a third party in a multisig transaction with arbiters serving as dispute resolution if there is an issue. You can read more at: <https://github.com/OpenBazaar/OpenBazaar/wiki>


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### Answer by username_3 on 2014-07-27. Score: 2

Another way is with an arbitrator and multi-sig addresses. Payment is made to a multi-sig address where the sender, receiver, and an arbitrator each have a key. If the transaction goes well the sender and buyer each sign. In case of a dispute the arbitrator rules and signs either with the buyer to pass the money on or with the sender to return the money.


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