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neutraLTC
I am looking at alternatives to the blockchain.info online wallet.
One thing I did not see addressed at blocktrail.com is whether or not I can import Private Keys (so as to "sweep" BTC from other wallets into a blocktrail one).
Is that possible and easy to do?
Hey OROBTC,
Good to hear that you are considering Blocktrail/BTC.com. We would suggest for you to just send all the bitcoin you intend to sweep to a Blocktrail/BTC.com wallet.
Blocktrail wallet is a multi-signature HD wallet, so recovering - or retrieving in your case - your bitcoins using a different wallet isn't as simple as just importing private keys, the wallet which would import the private keys would need to have some extra code to understand how the multisig HD is structured and the same for other multisig HD wallets (because they're all slightly different).
The reason why exporting private keys doesn't make sense anymore with most modern wallets is because they are HD (hierarchical deterministic)*, the fact that exporting private keys is such a horrible backup solution is actually the whole reason why HD wallets were invented.
* Source: https://en.bitcoin.it/wiki/Deterministic_wallet "A deterministic wallet is a system of deriving keys from a single starting point known as a seed. The seed allows a user to easily back up and restore a wallet without needing any other information and can in some cases allow the creation of public addresses without the knowledge of the private key."
I hope that answers your question.
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Thanks and let me know if you have any other doubts or whatever.