Using the same private key in different places? (Bitcoin QT & Blockchain)

[roxtar]

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[danneu]

Right, deleting your keys from blockchain.info is pretty much telling the website to stop scanning the bitcoin network for information relevant to those keys. A poor analogy would be that you have two RSS readers running, receiving the same notifications. Unsubscribing one RSS reader doesn't mutate the blogosphere if I can still call it that.

However, any time you give away your private keys, you're giving somebody full access to those bitcoins. You can't "revoke" them, you can only ask that they please forget them.

So yes, you can click blockchain.info's "delete" button since you already have those keys stored elsewhere, but do send those coins to a key that blockchain.info doesn't know.

[Hawkix]

Changes made on blockchain.info modify only the cloud-stored password-protected blockchain wallet (wallet.aes.json). Of course, it can't modify your backups etc.

So, you can safely delete private keys from blockchain.info *IF YOU HAVE THEM ELSEWHERE BACKED UP*.

Of course, if somehow your private keys got leaked, deleting them from some wallet does not improve security. Who knows the private keys, he can use the funds on those addresses.

If in doubt, convert larger amounts to new addresses in cold storage.

[roxtar]

Got it! Thanks guys