Portion

Portion.io is creating a wholistic blockchain-powered platform for the luxury, art, and auction-able goods.

What I meant "wholistic" is that they are creating a total platform that enables to own/trade those expensive/unique goods by using Ethereum smart contract.

There are so many features, but these are the most important things in my opinion:

1. Raise the partial ownership based on crypto collectible tech (it's beta-live not at here - https://beta.portion.io/?friecows=cb24d5ee#featured
2. Trade the goods in a blockchain-powered auctions (It's also beta-live at here - https://beta.portion.io/?friecows=cb24d5ee#market
3. Proof of fund - it seems like an oracle to validate each fund created for the ownership/trades
4. Escrow - similar with no.3 it's a blockchain-powered escrow that can hold the money in between the traders
5. Enterprise solution - loan, insurance, etc.