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Bitcoin Wallet Blockchain

latest release: 2.2.5 last analysed  30th November 2020
4.5 ★★★★★
3292 ratings
1st May 2019


Our last analysis is based on data found in their Play Store description and their website and their source repository. We discuss issues with the provider here.
details below 

Older reviews (show 0 of 1 reproducible)

Do your own research!

Try out searching for "lost bitcoins", "stole my money" or "scammers" together with the wallet's name, even if you think the wallet is generally trustworthy. For all the bigger wallets you will find accusations. Make sure you understand why they were made and if you are comfortable with the provider's reaction.

If you find something we should include, you can create an issue or edit this analysis yourself and create a merge request for your changes.

The Analysis

Something shady is going on here. This wallet looked like a wallet when we tried to reproduce it from the provided source a year ago and we failed to do that. Check “Older reviews” above for details. Now (ok, a while ago: 2020-09-16), user “alex Kijvanit” commented on the wallet:

What a crazy app! I install then open the app. First thing came up was “we no longer support this app. Please backup”. What the hell!!

We tried to start the app as it is installed on our device (after all it might contain funds) and do not even get this message. Just an instant close or crash.

Other users report the same.

After deleting the app’s data (or re-installing it), the app starts without any such symptoms but for example the backup appears to not get written to the sdcard.

Upon further investigation of their app, we find it is obfuscated. This is a big red flag for a wallet that claims to be open source. We put those wallets in their own category as they clearly are worse than closed source. Do not trust this wallet!


Verdict Explained


The app's binary contains active obfuscation which makes it significantly harder to analyze what it is doing.

This verdict means that the app could not be decompiled. In benign cases code symbols are replaced by short strings to make the app smaller but for the sake of transparency this should not be done for non-reproducible Bitcoin wallets. (Reproducible wallets could obfuscate the app for size improvements as the reproducibility would assure the auditability.)

The app cannot be independently verified. If the provider puts your funds at risk on purpose or by accident, you will probably not know about the issue before people start losing money. If the provider is more criminally inclined he might have collected all the backups of all the wallets, ready to be emptied at the press of a button. The app might have a formidable track record but out of distress or change in management turns out to be evil from some point on, with nobody outside ever knowing before it is too late.