Datum is a distributed database governing safe exchange and trade of data. Powered by Ethereum, BigchainDB and IPFS.
Looks like an interesting project.
The token sale starts on the 12th as you can see above in the picture included (taken from their website)
Here is a link to their contest a https://wn.nr/J5MjU3
5 Ways to Enter for each entry to the competition you will be awarded an extra 100 DAT Tokens. Among all entries 10 winners will be randomly chosen that will receive an additional 5'000 DAT Tokens each !
I am not affiliated with DAT in anyway, Although I am not considering buying into the ICO at the moment I would like to test out the app and try to sell some of my data
Official website https://datum.network