In my attempt to make everything ultra-secure, some time ago I did the following:
* created a paper wallet offline, noted public key, and locked two copies of the paper away in safes on two distinct locations.
* added this public address as the receipt address in mining pools and LOCKED it there (unchangeable)
Now - Everything is fine, everything runs smooth.
I have access to both copies (if I want), and transfers from the mining keep pouring in.
Unfortunately - what I didn't know when I set this up in the past, that it is not possible to withdraw partial amounts from that paper wallet address.
So currently my alternatives of handling that situation are
a) I either keep as-is and will have an ever-growing wealth on one address as long as I'm mining.
b) cancel my mining-pool accounts to point to a different address (this time not paper or not locked)
(and then transfer whole amount to some bitcoin-qt client or so)
any other options that would allow me to keep my mining pool accounts? Talking them into unlocking the address? ;-)
Rico
You can most definitely do partial spends of paper wallets using the Android app Mycelium. They say every trace of the private key is erased from memory, but it's up to you if you want to trust your private key being used by the app. I have used it several times, and love this feature!
https://play.google.com/store/apps/details?id=com.mycelium.wallet&hl=enEdit: Here's the forum thread for the app:
https://bitcointalk.org/index.php?topic=293472.240