Bitcoin Wallet Hexalatest release: 1.4.5 last analysed 21st January 2021
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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.
The page footer on their website answers most of our questions:
Bitcoin Only Wallet | Best Android Bitcoin Wallet | IOS Bitcoin Wallet | Non Custodial Bitcoin Wallet | Simple Bitcoin Wallet | Multisig wallet | Stack Sats | Donate Bitcoin | Bitcoin Donation | Buy bitcoin in UK | Crypto wallet | Send bitcoin | Beginners bitcoin wallet | Shamir Secret Sharing Bitcoin Wallet
So it’s “Non Custodial Bitcoin Wallet”. There is also a link to their Github and while not equipped with a FOSS license, it is public source code of a wallet.
So the build instructions looked lacking from the start as there is no word about building the apk but only about running the app, we tried it nevertheless:
$ git clone https://github.com/bithyve/hexa $ cd hexa/ $ git checkout v1.4.1 $ docker run --rm -v$PWD:/mnt --workdir=/mnt -it walletscrutiny/android bash root@af2c99dc5b57:/mnt# apt update root@af2c99dc5b57:/mnt# apt install curl npm rubygems -y root@af2c99dc5b57:/mnt# curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - root@af2c99dc5b57:/mnt# echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list root@af2c99dc5b57:/mnt# apt update root@af2c99dc5b57:/mnt# apt install yarn -y root@af2c99dc5b57:/mnt# npm install npm@latest -g root@af2c99dc5b57:/mnt# npm install -g rn-nodeify root@af2c99dc5b57:/mnt# gem install cocoapods ... Building native extensions. This could take a while... ERROR: Error installing cocoapods: ERROR: Failed to build gem native extension. ... root@7a3a4f43290e:/mnt# yarn install ... patch cocoapods ./setup.sh: 14: pod: not found Done in 132.25s.
and as the above is only the good guesses out of 35 commands typed so far, this is where we give up and consider the app not verifiable due to lacking build instructions.
The app provider also shares code but we could so far not verify that the published code matches the published app!
This verdict means that the provider did share some source code but that we could not verify that this source code matches the released app. This might be due to the source being released later than the app or due to the provided instructions on how to compile the app not being sufficient or due to the provider excluding parts from the public source code. In any case, the result is a discrepancy between the app we can create and the app we can find on GooglePlay and any discrepancy might leak your backup to the server on purpose or by accident.
As we cannot verify that the source provided is the source the app was compiled from, this category is only slightly better than closed source but for now we have hope projects come around and fix verifiability issues.
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.
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