Could i have this one ?
Prefix : 1AmiLy ; if possible with capital A
I can make this for you. Please follow the instructions and give me a public key (You gave me a Bitcoin address).Prefix : 1AmiLy ; if possible with capital A
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1. Is this vanity address as "safe" as a normal bitcoin address ?
Simple practical answer: yes.Quote
2. can the vanity address be used for altcoins instead of bitcoin, for example monera/dash./zcash ...
That's possible, but not in this giveaway.Not quite, for a normal bitcoin address, while the coins are stored on it only the hash of the public key is public, and the public key itself is only revealed when the coins are spent.
So are millions of other addresses that are used over and over again, or used to sign a message.Quote
The hash is practically intractable, but ECDSA can be easily cracked using a quantum computer
No need to spread FUD on this, unless you can tell me where I can buy a quantum computer that can easily crack this...Quote
Since practical quantum computers don't exist yet (or perhaps "the powers that be" have one in the basement, but don't use it for fear of revealing its existence, an interesting conspiracy theory), and no mathematical attacks are known, vanity addresses are probably safe.
There you go 
You could have said this without the FUD.To end the FUD now: If you think you can crack an address when the public key is known, why don't you give it a shot at 1JCe8z4jJVNXSjohjM4i9Hh813dLCNx2Sy? This is the richest Bitcoin address, and it has been used to send coins out (Balance: