Ok. Can somebody give me a hint about zerocoin feature? Maybe some link to start reading?
Actually there is no easy howto guide.
Some one should write one..
Basically try it first with GUI buttons.
Mintzerocoin button sends 1 coin to be anonymized.
Transaction matures 7 blocks and you will be able to spend it.
Spend function will work if 2 or more same value coins been anonymized.
Spendzerocoin button does not actually spend anything,
it creates a new address holding that 1 coin.
This address is newly generated like a just mined coin.
So there you have it, anonymous coin.
Values supported are 1, 10, 100, 250, 500
Higher values than 1 must be used via console.
Commands are the same, mintzerocoin, spendzerocoin.
Currently GUI buttons support only value 1.
Higher values willbe added when buttons are 110% tested.
Anonymous Zerocoin Protocol:
https://en.wikipedia.org/wiki/Zerocoin
https://github.com/Zerocoin/libzerocoin
Zerocoin whitepaper
http://zerocoin.org/media/pdf/ZerocoinOakland.pdf
Zerocoin parameters RSA-2048 from RSA Factoring Challenge
https://en.wikipedia.org/wiki/RSA_Factoring_Challenge
Thanks for explanation and links.
Going to try with some HXX coins..