<p>Blockchain just came out with a great <a href="https://play.google.com/store/apps/details?id=piuk.blockchain" rel="nofollow">Android client</a>, based on <a href="https://code.google.com/p/bitcoin-wallet/" rel="nofollow">bitcoin-wallet</a>.</p>

<p>In the description it says "No blockchain downlaod [sic.]". However, in the documentation of <a href="https://github.com/zootreeves/My-Wallet-Android" rel="nofollow">their sources</a>, they say "When run for the first time, the block chain needs to be downloaded".</p>

<p>I'd be optimistic and <strong>guess</strong> they download all headers, and fully check the transactions regarding the local wallet, ignoring the unrelated transactions. However this is just a guess and I'd like to know which checks does it actually do client side, and how much does it instead "just trust" <a href="https://blockchain.info/" rel="nofollow">blockchain.info</a> (which is very reputable anyway, but still I'd rather know).</p>

<thin-clients><blockchain.info><android>
What client-side checks does blockchain's android client do?
o0'.
# What client-side checks does blockchain's android client do?

(Asked by: username_0 on 2012-03-27)

Blockchain just came out with a great [Android client](https://play.google.com/store/apps/details?id=piuk.blockchain), based on [bitcoin-wallet](https://code.google.com/p/bitcoin-wallet/).

In the description it says "No blockchain downlaod [sic.]". However, in the documentation of [their sources](https://github.com/zootreeves/My-Wallet-Android), they say "When run for the first time, the block chain needs to be downloaded".

I'd be optimistic and **guess** they download all headers, and fully check the transactions regarding the local wallet, ignoring the unrelated transactions. However this is just a guess and I'd like to know which checks does it actually do client side, and how much does it instead "just trust" [blockchain.info](https://blockchain.info/) (which is very reputable anyway, but still I'd rather know).

**Tags:** thin-clients, blockchain.info, android


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