Hello, for ignis, in order to get it at ratio of 0.5 Ignis per NXT owned, it is depends on the amount of NXT i hold in my wallet?
Yes. If you have it in your wallet, then you're safe.
Might be that NXT held in exchanges works too - for Ardor the Poloniex exchange did the sharing properly. But I haven't heard word from them yet on IGNIS.
Or the total NXT Value my Wallet Held like
Balance of NXT + Value of Assets in NXT
No, the value of your assets doesn't count.
And i am kinda confused anyhow, hope someone can help me
As currently, we are now NXT 2.0. Therefore the current token for NXT 2.0 is Ardor and we are still under Beta till Q3 of 2017 and the main net will launch?
Then, Ignis is the child chain token, what is the difference of child chain and main chains
Now you're nearly confusing me
We are not on NXT2.0 yet - that was only the temporary name for Ardor.
But yes, the Ardor asset-tokens on the NXT chain will become actual Ardor on the Ardor chain - which will be launched in the coming months.
Ignis will directly be given according to your NXT balance (additionally you can buy more in an ICO that will still have to be announced in detail).
Now as to what child chains are: Basically the idea is, that there is one main chain (that is ARDR) that takes care of all child chains. The advantage is, that not all information of the child chains has to be stored in the main chain - transactions will be 'bundled' together, and then only the hash of the final block gets stored in the long run. Meaning: ARDR will scale fine, even if the child chains are full of hundreds of thousands of transactions.
That makes it unique - we know that Bitcoin has scaling issues, and people just don't seem to connect the dots that
Ethereum is also soon in trouble.
To 'keep an eye on' the child chains is the job of ARDR. But else it's quite limited (to prevent blockchain bloat). You cannot buy assets with ARDR, and it's not meant for daily transactions (like buying coffee). That's what the child chains will be for - and IGNIS will be the first (for a while also the only one).
One quite interesting feature is that child chains have more freedom - they can do more stuff than NXT did. And they won't necessarily have to pay fees in ARDR. Or, some could also be very restricted - and only allow the issuer to transfer tokens (that would be handy for little businesses, that give vouchers to customers).
You can find some more detail on the
Ardor and child-chain transactions here.