Add marketplace to dapp game

GregorS

Hello guys,

I have created a simple game where monsters can be created and saved as hashes on the blockchain.

However, as a next step I would like to add a marketplace such as https://www.cryptocelebrities.co/marketplace/?view=all&page=1 and https://www.cryptokitties.co/marketplace.

Any suggestion if this marketplace can be implemented by accessing directly the blockchain or do I need a database as a middle man to access the f.ex.: kitties owner with others?

I appreciate your replies!

PS.: If I can access the blockchain directly and load all saved hashes by an owner I highly would appreciate an example. Thx in advance!