OpenBazaar

OpenBazaar is a decentralized e-commerce platform. You can buy or sell goods using OpenBazaar. Users are not anonymous in the OpenBazaar network as their IP address is recorded. A node can be a buyer, seller, or a moderator.

It uses a Kademlia-style distributed hash table data structure. A seller must host a node and keep it running in order to make the items visible in the network.

It prevents account spam by using the proof-of-work consensus protocol. It prevents ratings and reviews spam using proof-of-burn, CHECKLOCKTIMEVERIFY, and security deposit consensus protocols.

Buyers and sellers trade using Bitcoins. A buyer can add a moderator while making a purchase. The moderator is responsible for resolving a dispute if anything happens between the buyer and the seller. Anyone can be a moderator in the network. Moderators earn commission by resolving disputes.