Paper wallet check-mate?

[rico666]

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

[g3raint]

You could add the private key to an Offline machine using the Armory Client and then create transactions on an Online Computer using Armory then transferring them to the offline computer (either manually or via USB) for signing and having the change address set as the same Paper Wallet.

This WOULD enable you to spend amounts from the paper wallet without having the private keys on an internet connected machine

A raspberry PI springs to mind as this is very small and can easily be locked into a safe if you are trying to be ultra secure.

https://bitcoinarmory.com

Cheers

G

[xeroc]

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.

This is not true. Even If you had just one single input into your wallet you can use the same address as change-address .. no need to sweep the address

[LouReed]

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=en

Edit: Here's the forum thread for the app:  https://bitcointalk.org/index.php?topic=293472.240

[Sindelar1938]

I have never heard of mycelium before, thanks will test them out