# Bitcoin Safe

### Long-term Bitcoin savings made Easy

## Currently ALPHA -- Use only on regtest / testnet / signet

#### Features

- **Easy** Bitcoin wallet for long-term cold storage
  - **Best practices** built into the wallet setup
  - **Easier** address labels by using categories (e.g. "KYC", "Non-KYC", "Work", "Friends", ...)
    - Automatic coin selection within categories
  - **Easier** fee selection for non-technical users
  - Automatic UTXO management as much as possible to prevent uneconomical UTXOs in the future
    - Opportunistic merging of small utxos when fees are low
  - **Collaborative**: 
    - Wallet chat and sharing of PSBTs (via nostr)
    - Label synchronization between trusted devices (via nostr)
  - **Multi-Language**: 
    - 🇺🇸 English, 🇨🇳 Chinese - 简体中文, 🇪🇸 Spanish - español de España, 🇯🇵 Japanese - 日本語, 🇷🇺 Russian - русский, 🇵🇹 Portuguese - português europeu, 🇮🇳 Hindi - हिन्दी, Arabic - العربية, (more upon request)
- **Fast**: Electrum server and upgrade to **Compact Block Filters** for the Bitcoin Safe 2.0 release 
- **Secure**: No seed generation or storage (on mainnet). 
  - A hardware signer/signing device for safe seed storage is needed (storing seeds on a computer is reckless)
  - Powered by **[BDK](https://github.com/bitcoindevkit/bdk)**

## Installation from Git repository

### Ubuntu, Debian, Windows

- Install `poetry` and run `bitcoin_safe`
  
  ```sh
  git clone https://github.com/andreasgriffin/bitcoin-safe.git
  cd bitcoin-safe
  pip install poetry  && poetry install && poetry run python -m bitcoin_safe
  ```

### Mac

- Run `bitcoin_safe`
  
  ```sh
  git clone https://github.com/andreasgriffin/bitcoin-safe.git
  cd bitcoin-safe
  python3 -m pip install poetry && python3 -m poetry install && python3 -m poetry run python3 -m bitcoin_safe
  ```

- *Optional*: dependency  `zbar` 
  
  ```sh
  xcode-select --install
  /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
  brew install zbar 
  ```

#### Preview

##### Sending

![screenshot0](docs/send.gif)

##### Setup a multisig wallet

![screenshot1](docs/multisig-setup.gif)

##### PSBT sharing with trusted devices

![psbt-share.gif](docs/psbt-share.gif)

##### Label Synchronization with trusted devices

![label-sync.gif](docs/label-sync.gif)

#### More features

* Import export
  
  * csv export of every list
  
  * Label import and export in [BIP329](https://github.com/bitcoin/bips/blob/master/bip-0329.mediawiki) 
  
  * Label import of Electrum wallet

* 

#### Goals (for the 2.0 Release)

- **Compact Block Filters** by default
  - Compact Block Filters are **fast** and **private**
  - Compact Block Filters (bdk) are being [worked on](https://github.com/bitcoindevkit/bdk/issues/679), and will be included in bdk 1.1. For now RPC, Electrum and Esplora are available, but will be replaced completely with Compact Block Filters.

#### TODOs for beta release

- [ ] Add more pytests
- [ ] [bbqr code](https://bbqr.org/) 

## Development

* Run the precommit manually for debugging

```shell
poetry run pre-commit run --all-files
```

#### Regtest docker environement with electrs and mempool

* install docker

```shell
# see https://docs.docker.com/engine/install/ubuntu/
```

* setting up a regtest environment in docker + mempool instance

```shell
curl https://getnigiri.vulpem.com | sudo bash # see https://nigiri.vulpem.com/#install
sudo nigiri start
xdg-open http://localhost:5000/
```

* This creates
  * esplora localhost:3000
    electrs localhost:50000 
  * and a gui block explorer at http://localhost:5000
* Setup mempool instance

```shell
sudo apt install docker-compose
git clone https://github.com/ngutech21/nigiri-mempool.git

pushd nigiri-mempool
sudo docker-compose up -d
sleep 10
# this is needed because the database needs time to start up 
sudo docker-compose up -d
popd
xdg-open http://localhost:8080/

# if the mempool is endlessly loading, then get the debug output with
sudo docker-compose logs -f mempool-api
```

* this opens a mempool at http://localhost:8080/

#### Control the Regtest environment

* get coins to an address

```shell
nigiri rpc generatetoaddress 1 bcrt1qgsnt3d4sny4w4zd5zl9x6jufc5rankqmgphyms9vz0ds73q4xfms655y4c # mine blocks

# or use the internal faucet
nigiri faucet bcrt1qgsnt3d4sny4w4zd5zl9x6jufc5rankqmgphyms9vz0ds73q4xfms655y4c 0.01
```

* ## Installation from PyPi

### Ubuntu, Debian, Windows

- Install `poetry` and run `bitcoin_safe`
  
  ```sh
  pip install bitcoin-safe
  python -m bitcoin_safe
  ```

### Mac

- Run `bitcoin_safe`
  
  ```sh
  python3 -m pip install bitcoin-safe
  python3 -m bitcoin_safe
  ```
