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https://github.com/demining/btcwallet-google-colab

A secure bitcoin wallet daemon written in Go (golang) Google Colab
https://github.com/demining/btcwallet-google-colab

bitcoin bitcoin-api bitcoin-core bitcoin-payment bitcoin-payments bitcoin-transaction bitcoin-wallet colab colab-notebook colab-notebooks colab-tutorial colaborador colaboration colaboratory google-colab google-colab-gpu google-colab-notebook google-colab-tutorial google-colaboratory google-colaboratory-notebooks

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A secure bitcoin wallet daemon written in Go (golang) Google Colab

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README 

        



[![Build Status](https://travis-ci.org/btcsuite/btcwallet.png?branch=master)](https://travis-ci.org/btcsuite/btcwallet)

[![Build status](https://ci.appveyor.com/api/projects/status/88nxvckdj8upqr36/branch/master?svg=true)](https://ci.appveyor.com/project/jrick/btcwallet/branch/master)



-------------------------

### Run btcwallet-Google-Colab



https://colab.research.google.com/drive/1OShIMVcFZ_khsUIBOIV1lzrqAGo1gfm_?usp=sharing



-------------------------



btcwallet is a daemon handling bitcoin wallet functionality for a

single user.  It acts as both an RPC client to btcd and an RPC server

for wallet clients and legacy RPC applications.



Public and private keys are derived using the hierarchical

deterministic format described by

[BIP0032](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki).

Unencrypted private keys are not supported and are never written to

disk.  btcwallet uses the

`m/44'/'/'//
`

HD path for all derived addresses, as described by

[BIP0044](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki).



Due to the sensitive nature of public data in a BIP0032 wallet,

btcwallet provides the option of encrypting not just private keys, but

public data as well.  This is intended to thwart privacy risks where a

wallet file is compromised without exposing all current and future

addresses (public keys) managed by the wallet. While access to this

information would not allow an attacker to spend or steal coins, it

does mean they could track all transactions involving your addresses

and therefore know your exact balance.  In a future release, public data

encryption will extend to transactions as well.



btcwallet is not an SPV client and requires connecting to a local or

remote btcd instance for asynchronous blockchain queries and

notifications over websockets.  Full btcd installation instructions

can be found [here](https://github.com/btcsuite/btcd).  An alternative

SPV mode that is compatible with btcd and Bitcoin Core is planned for

a future release.



Wallet clients can use one of two RPC servers:



  1. A legacy JSON-RPC server mostly compatible with Bitcoin Core



     The JSON-RPC server exists to ease the migration of wallet applications

     from Core, but complete compatibility is not guaranteed.  Some portions of

     the API (and especially accounts) have to work differently due to other

     design decisions (mostly due to BIP0044).  However, if you find a

     compatibility issue and feel that it could be reasonably supported, please

     report an issue.  This server is enabled by default.



  2. An experimental gRPC server



     The gRPC server uses a new API built for btcwallet, but the API is not

     stabilized and the server is feature gated behind a config option

     (`--experimentalrpclisten`).  If you don't mind applications breaking due

     to API changes, don't want to deal with issues of the legacy API, or need

     notifications for changes to the wallet, this is the RPC server to use.

     The gRPC server is documented [here](./rpc/documentation/README.md).



## Requirements



[Go](http://golang.org) 1.12 or newer.



## Installation and updating



### Windows - MSIs Available



Install the latest MSIs available here:



https://github.com/btcsuite/btcd/releases



https://github.com/btcsuite/btcwallet/releases



### Windows/Linux/BSD/POSIX - Build from source



- Install Go according to the installation instructions here:

  http://golang.org/doc/install



- Ensure Go was installed properly and is a supported version:



```bash

$ go version

$ go env GOROOT GOPATH

```



NOTE: The `GOROOT` and `GOPATH` above must not be the same path.  It is

recommended that `GOPATH` is set to a directory in your home directory such as

`~/goprojects` to avoid write permission issues.  It is also recommended to add

`$GOPATH/bin` to your `PATH` at this point.



- Run the following commands to obtain btcwallet, all dependencies, and install it:



```bash

$ cd $GOPATH/src/github.com/btcsuite/btcwallet

$ GO111MODULE=on go install -v . ./cmd/...

```



- btcwallet (and utilities) will now be installed in ```$GOPATH/bin```.  If you did

  not already add the bin directory to your system path during Go installation,

  we recommend you do so now.



## Updating



#### Windows



Install a newer MSI



#### Linux/BSD/MacOSX/POSIX - Build from Source



- Run the following commands to update btcd, all dependencies, and install it:



```bash

$ cd $GOPATH/src/github.com/btcsuite/btcwallet

$ git pull

$ GO111MODULE=on go install -v . ./cmd/...

```



## Getting Started



The following instructions detail how to get started with btcwallet connecting

to a localhost btcd.  Commands should be run in `cmd.exe` or PowerShell on

Windows, or any terminal emulator on *nix.



- Run the following command to start btcd:



```

btcd -u rpcuser -P rpcpass

```



- Run the following command to create a wallet:



```

btcwallet -u rpcuser -P rpcpass --create

```



- Run the following command to start btcwallet:



```

btcwallet -u rpcuser -P rpcpass

```



If everything appears to be working, it is recommended at this point to

copy the sample btcd and btcwallet configurations and update with your

RPC username and password.



PowerShell (Installed from MSI):

```

PS> cp "$env:ProgramFiles\Btcd Suite\Btcd\sample-btcd.conf" $env:LOCALAPPDATA\Btcd\btcd.conf

PS> cp "$env:ProgramFiles\Btcd Suite\Btcwallet\sample-btcwallet.conf" $env:LOCALAPPDATA\Btcwallet\btcwallet.conf

PS> $editor $env:LOCALAPPDATA\Btcd\btcd.conf

PS> $editor $env:LOCALAPPDATA\Btcwallet\btcwallet.conf

```



PowerShell (Installed from source):

```

PS> cp $env:GOPATH\src\github.com\btcsuite\btcd\sample-btcd.conf $env:LOCALAPPDATA\Btcd\btcd.conf

PS> cp $env:GOPATH\src\github.com\btcsuite\btcwallet\sample-btcwallet.conf $env:LOCALAPPDATA\Btcwallet\btcwallet.conf

PS> $editor $env:LOCALAPPDATA\Btcd\btcd.conf

PS> $editor $env:LOCALAPPDATA\Btcwallet\btcwallet.conf

```



Linux/BSD/POSIX (Installed from source):

```bash

$ cp $GOPATH/src/github.com/btcsuite/btcd/sample-btcd.conf ~/.btcd/btcd.conf

$ cp $GOPATH/src/github.com/btcsuite/btcwallet/sample-btcwallet.conf ~/.btcwallet/btcwallet.conf

$ $EDITOR ~/.btcd/btcd.conf

$ $EDITOR ~/.btcwallet/btcwallet.conf

```



## Issue Tracker



The [integrated github issue tracker](https://github.com/btcsuite/btcwallet/issues)

is used for this project.



## GPG Verification Key



All official release tags are signed by Conformal so users can ensure the code

has not been tampered with and is coming from the btcsuite developers.  To

verify the signature perform the following:



- Download the public key from the Conformal website at

  https://opensource.conformal.com/GIT-GPG-KEY-conformal.txt



- Import the public key into your GPG keyring:

  ```bash

  gpg --import GIT-GPG-KEY-conformal.txt

  ```



- Verify the release tag with the following command where `TAG_NAME` is a

  placeholder for the specific tag:

  ```bash

  git tag -v TAG_NAME

  ```



----



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