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https://github.com/Samourai-Wallet/samourai-wallet-android

Bitcoin Wallet strongly focused on privacy when transacting on the bitcoin network
https://github.com/Samourai-Wallet/samourai-wallet-android

android bech32 bip125 bip173 bip39 bip44 bip47 bip49 bip69 bip84 bitcoin bitcoinj cpfp java opendime paynyms rbf segwit stonewall tor

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Bitcoin Wallet strongly focused on privacy when transacting on the bitcoin network

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[![Build Status](https://travis-ci.org/Samourai-Wallet/samourai-wallet-android.svg?branch=develop)](https://travis-ci.org/Samourai-Wallet/samourai-wallet-android)



# Samourai Wallet



### Features:



[Samourai Wallet features list](Samourai-Wallet-features.md)



### Build:



Import as Android Studio project. Should build "as is". PGP signed tagged releases correspond to builds that were issued via Google Play.



### BIP44:



Samourai implementation based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki), extends [bitcoinj](https://bitcoinj.github.io/).



### BIP47:



Samourai implementation based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0047.mediawiki) by Justus Ranvier. Extends BIP44 implementation (above). Further modifications have been made to incorporate Segwit addresses into BIP47.



[Generic source code for BIP47.](https://github.com/SamouraiDev/BIP47_RPC)



[BIP47 test vectors](https://gist.github.com/SamouraiDev/6aad669604c5930864bd)



### BIP49 (Segwit):



Samourai P2SH-P2WPKH implementation based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0049.mediawiki) by Daniel Weigl and includes support for BIP49-specific XPUBs: [YPUB](https://github.com/Samourai-Wallet/sentinel-android/issues/16).



### BIP69:



Samourai implementation based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0069.mediawiki) by Kristov Atlas.



### BIP84 (Segwit):



Samourai implementation based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0084.mediawiki) by Pavol Rusnak.



### BIP125 (Replace-by-fee, RBF):



Samourai implementation based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0125.mediawiki) by David A. Harding and Peter Todd.



### BIP141 (Segwit):



Samourai spends to bech32 addresses P2WPKH based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki) by Eric Lombrozo, Johnson Lau and Pieter Wuille.



### BIP173 (Segwit):



Samourai implementation based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki) by Pieter Wuille and Greg Maxwell.



### BIP174 (Partially Signed Bitcoin Transaction Format, PSBT):



Samourai signing via PSBT implementation based on [original BIP](https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki) by  Andrew Chow.



### Spending:



Samourai spends include the possibility of including custom fees as well as the use of batch spending (build up a list of batched outputs for grouped spend and fee savings).



### Ricochet:



Samourai implementation of multi-hop spend designed to outrun the baying pack of #KYCRunningDogs.



Ricochet using nLockTime (staggered) will spread out hops over different blocks and make sure that hops do not appear all at once in the mempool.



### STONEWALL:



STONEWALL spend is designed to increase the number of combinations between inputs and outputs (transaction entropy). It replaces the previously used BIP126. The objective is to obtain a positive entropy score using [Boltzmann](https://github.com/Samourai-Wallet/boltzmann) evaluation of the transaction.



### Stowaway:



A Stowaway spend, also implemented as [PayJoin](https://joinmarket.me/blog/blog/payjoin/), is a collaborative-spend carried out with another user. UTXOs are joined and the spend amount is cloaked. It is based on an [idea](https://bitcointalk.org/index.php?topic=139581.0) by Gregory Maxwell. 



### Tor:



Includes Tor bundled in-app.



### TestNet3:



MainNet/TestNet selection is displayed when sideloading a new installation. To switch networks, make a backup of your current wallet, uninstall/reinstall (sideload) and select desired network.



### OpenDime:



Plug in your OpenDime using the appropriate OTG (On-The-Go) USB cable and Samourai can be used to view address and balance, validate the private key, and sweep balance to your wallet.



### License:



[Unlicense](https://github.com/Samourai-Wallet/samourai-wallet-android/blob/master/LICENSE)



### Contributing:



All development goes in 'develop' branch - do not submit pull requests to 'master'.



### Dev contact:



[PGP](http://pgp.mit.edu/pks/lookup?op=get&search=0x72B5BACDFEDF39D7)



### What we do:



[Samourai HQ](https://samouraiwallet.com)



[Sentinel](https://play.google.com/store/apps/details?id=com.samourai.sentinel&hl=en)



[PayNym.is](https://paynym.is)



[OXT](https://oxt.me)



[Sovereign.ly](http://sovereign.ly)



[Mule Tools](http://mule.tools)