please pay attention to oxygenplatforms. https://www.oxygenplatforms.com/
They have taken most of Hydro Token spec.
(number of coins, initial distribution etc). Website is missing of any information about their project, only this:
We Building Financial web are applied in the protection of the Environment.
Full of errors (no one professional couldn't misspell "Careers" with CREERS).
No white paper, no any info (just token supply as reported)... and they want your money!
This is the only info really detailed and hardly studied:
https://medium.com/@oxygenplatform/airdrop-get-333-333-o2-instant-through-eff2ed379f97
Quote
FOR AIRDROP
SEND 0.002 ETH = 333,333 O2
FOR DEVELOPER
0.1ETH = 16,666,500 O2
FOR PARTNER
0.5ETH = 83,332,500 O2
FOR INVESTORS
1ETH = 166,665,000 O2
FOR CUSTOMIZABLE
Min 0.002ETH- 10ETH
SEND 0.002 ETH = 333,333 O2
FOR DEVELOPER
0.1ETH = 16,666,500 O2
FOR PARTNER
0.5ETH = 83,332,500 O2
FOR INVESTORS
1ETH = 166,665,000 O2
FOR CUSTOMIZABLE
Min 0.002ETH- 10ETH
Well there isn't any information about this "platform" (you can't even join a demo if you click "get started" on their home page).
They are not affiliate with https://www.oxygen-finance.com/ so... pay attention this could be another coin with "trouble".