Altana is a Bitcoin Wallet for Android provided inbitcoin and powered by Blockstream

What is Altana?

Altana is a fork of Blockstream Green.

Blockstream Green is a non-custodial Bitcoin wallet - it allows you to safely store, send, and receive your Bitcoin. It's a mobile app available for Android and iOS, based on gdk, our cross-platform wallet library.

They offer a variety of advanced features, such as letting our users set their own spending limits, watch-only access for observers, and our unique multisig security model. All of these (and more) are explained in more detail here.

Build

For instructions on how to build the wallet please refer to BUILD.md

Contributing

Guidelines for contributions can be found in CONTRIBUTING.md

Translations

You can help translating this app here

Support

Need help?

Read our FAQ or contact us at info@greenaddress.it.

License

Altana/Blockstream Green is released under the terms of the GNU General Public License. See LICENSE for more information or see https://opensource.org/licenses/GPL-3.0

Authenticity

Verifying the APK signing certificate fingerprint is very important for you own security - please follow this steps to make sure the APK you've downloaded is authentic.

Unzip the APK and extract the file /META-INF/CERT.RSA; then run:

keytool -printcert -file CERT.RSA

You will get the certificate fingerprints; verify it matches with:

Certificate fingerprints:
	 SHA1: 32:14:9A:78:E4:73:7C:FB:EC:0D:6D:98:3D:07:5F:75:AD:75:AB:16
	 SHA256: F2:07:80:81:79:B0:F6:5B:58:D1:F7:51:D1:17:59:1B:80:93:D5:75:2F:35:0A:DD:C8:E1:E6:23:31:B3:51:B6
	 Signature algorithm name: SHA256withRSA
	 Version: 3

Acknowledgements

Thanks to Bitcoin Wallet for Android for their QR scanning activity source code!

Thanks to Blockstream team