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doc: update README.md

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# lbcwallet
lbcwallet is a daemon, which provides lbry wallet functionality for a
single user.
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.
lbcwallet uses the `m/44'/<coin type>'/<account>'/<branch>/<address index>`
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,
lbcwallet 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.
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.
lbcwallet implements HD Wallet functionality which conforms to
[BIP0032](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki),
[BIP0043](https://github.com/bitcoin/bips/blob/master/bip-0043.mediawiki),
and [BIP0044](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki).
## Security
We take security seriously. Please contact [security](mailto:security@lbry.com) regarding any security issues.
Our PGP key is [here](https://lbry.com/faq/pgp-key) if you need it.
## Requirements
## Build from Source Code
- [Go](http://golang.org) 1.16 or newer.
- `lbcwallet` is not an SPV client and requires connecting to a local or remote
`lbcd` for asynchronous blockchain queries and notifications over websockets.
Full installation instructions can be found [here](https://github.com/lbryio/lbcd).
## To Build lbcwallet, lbcd, and lbcctl from Source
Install Go according to its [installation instructions](http://golang.org/doc/install).
Build `lbcwallet`
Requires [Go](http://golang.org) 1.19 or newer. Install Go according to its [installation instructions](http://golang.org/doc/install).
``` sh
git clone https://github.com/lbryio/lbcwallet
@ -55,112 +20,62 @@ cd lbcwallet
go build .
```
To make the quick start guide self-contained, here's how we can build the `lbcd` and `lbcctl`
## **lbcd** & **lbcwallet**
``` sh
git clone https://github.com/lbryio/lbcd
cd lbcd
`lbcwallet` is not an SPV client and requires connecting to a `lbcd` node for asynchronous blockchain queries and notifications over websockets.
# build lbcd
go build .
lbcwallet can serve wallet related RPCs and proxy lbcd RPCs to the assocated lbcd. It's sufficient for a user to connect just the **lbcwallet** instead of both.
# build lbcctl
go build ./cmd/lbcctl
``` mermaid
sequenceDiagram
actor C as lbcctl
participant W as lbcwallet (port: 9244)
participant D as lbcd (port: 9245)
rect rgb(200,200,200)
Note over C,W: lbcctl --wallet balance
C ->>+ W: getbalance
W -->>- C: response
end
rect rgb(200,200,200)
Note over C,D: lbcctl --wallet getblockcount (lbcd RPC service proxied by lbcwallet)
C ->>+ W: getblockcount
W ->>+ D: getblockcount
D -->>- W: response
W -->>- C: response
end
```
## Getting Started
The first time running the `lbcwallet` we need to create a new wallet.
Create a new wallet with a randomly generated seed or an existing one.
``` sh
./lbcwallet --create
lbcwallet --create
Do you have an existing wallet seed you want to use? (n/no/y/yes) [no]: no
Your wallet generation seed is: 3d005498ad5e9b7439b857249e328ec34e21845b7d1a7d2a5641d4050c02d0da
```
Start a local instance of `lbcd` and have the `lbcwallet` connecting to it.
The created wallet protects the seed with a default passphrase (`"passphrase"`), which can be override with `-p` option:
``` sh
# Start a lbcd with its RPC credentials
./lbcd --txindex --rpcuser=rpcuser --rpcpass=rpcpass
# Start a lbcwallet with its RPC credentials along with the lbcd's RPC credentials
# The default lbcd instance to conect to is already localhost:9245 so we don't need to specify it explicitly here.
./lbcwallet --rpcuser=rpcuser --rpcpass=rpcpass # --rpcconnect=localhost:9245
#
# rpcuser/rpcpass rpcuser/rpcpass
# lbcctl <-------------------> lbcwallet <--------------------> lbcd
# RPC port 9244 RPC port 9245
#
lbcwallet --create -p my-passphrase
```
Start wallet server, and connect it to a lbcd instance.
``` sh
./lbcd --txindex --rpcuser=rpcuser --rpcpass=rpcpass
./lbcwallet --rpcuser=rpcuser --rpcpass=rpcpass
#
# rpcuser/rpcpass rpcuser/rpcpass
# lbcctl <-------------------> lbcwallet <--------------------> lbcd
# RPC port 9244 RPC port 9245
#
lbcwallet --rpcuser=rpcuser --rpcpass=rpcpass # --rpcconnect=localhost:9245
```
Note:
At startup, the wallet will try to unlock itself with the default passphrase (`passphrase`) or an user provided one (using `-p` option).
- `lbcd` and `lbcwallet` implements two disjoint sets of RPCs.
- `lbcd` serves RPC on port 9245 while `lbcwallet` on port 9244.
- `lbcwallet` can proxy non-wallet RPCs to its associated `lbcd`.
Examples of using `lbcctl` to interact with the setup via RPCs:
1. Calling non-wallet RPC directly on lbcd:
If the passphrase does not match, the wallet remains locked. User can lock/unlock the wallet using `walletlock` and `walletpassphrase` RPCs.
``` sh
./lbcctl --rpcuser=rpcuser --rpcpass=rpcpass getblockcount
#
# lbcctl <-- getblockcount() --> lbcd
# RPC port 9245 (handled)
#
```
2. Calling wallet RPC on lbcwallet (using `--wallet`)
``` sh
./lbcctl --rpcuser=rpcuser --rpcpass=rpcpass --wallet getbalance
#
# lbcctl <-- getbalance() --> lbcwallet
# RPC port 9244 (handled)
#
```
3. Calling non-wallet RPC on lbcwallet, which proxies it to lbcd:
``` sh
./lbcctl --rpcuser=rpcuser --rpcpass=rpcpass --wallet getblockcount
#
# lbcctl <-- getblockcount() --> lbcwallet <-- getblockcount() --> lbcd
# RPC port 9244 (proxied) RPC port 9245
#
```
## Default Network and RPC Ports
| Instance | mainnet | testet | regtest |
| ------------- | ------- | ------ | ------- |
| lbcd Network | 9246 | 19246 | 29246 |
| lbcd RPC | 9245 | 19245 | 29245 |
| lbcwallet RPC | 9244 | 19244 | 29244 |
Examples
``` sh
./lbcctl getblockcount # port 9245
./lbcctl --wallet getblockcount # port 9244
./lbcctl --testnet getblockcount # port 19245
./lbcctl --wallet --regtest getblockcount # port 29244
lbcwallet --rpcuser=rpcuser --rpcpass=rpcpass -p my_passphrase
```
## Contributing