Help me test BTC, LTC, ETH addresses

[juan]

On Thu, 28 Sep 2017 21:39:15 +0000 (UTC)
jim bell <jdb10987 at yahoo.com> wrote:

>  
> 
>     On Thursday, September 28, 2017, 2:19:19 PM PDT, juan
> <juan.g71 at gmail.com> wrote: 
>  On Thu, 28 Sep 2017 16:34:32 -0400
> John Newman <jnn at synfin.org> wrote:
> 
> 
> >> I’ve been using electrum on android and Linux for the past 18
> >> months or so, and can only second Juan’s recommendation -
> >> it’s worked quite well for me. There’s even a “bitcoin atm” near
> >> my house where you can deposit cash and specify a wallet 
> >> address (or scan a qr code) - although I haven’t used the atm
> >> since prices got above 1k/btc, so it’s been a little while ;)
> 
> 
> >    For completness' sake I guess we should mention that one has to
>     be reasonaby sure that the machine running electrum (or other
>     client) isn't 'compromised' / has some sort of coin stealing
>     malware. 

> Yes, I recall reading on a blog of this potential problem.  Do
> ordinary anti-virus programs have the ability to detect such problems
> before they BECOME real problems?

	I don't know. I don't think anti-virus are to be trusted
	really. 

	The two most secure options in this case are using an offline
	computer, or using a hardware wallet. 

	If using a computer, you install a fresh linux distro, generate
	keys, and never connect the machine to the internet. You use
	your internet-connected machine to create transactions but you
	sign the transactions using the offline computer. That way even
	if your online computer is hacked, the keys remain safe in the
	offline computer. 

	https://en.bitcoin.it/wiki/Securing_your_wallet#Cold_wallets


	Harware wallets use the same setup but the offile computer is
	replaced with simpler hardware. (You'd have to trust the
	hardware manufacturer to some degree though, or build your own)

	https://en.bitcoin.it/wiki/Hardware_wallet

	



 Jim Bell
> 
> >
> 
>     Also, best practice is to have most of your funds in cold
>     storage. 
> 
>     https://en.bitcoin.it/wiki/Cold_storage
> 
> 
>