> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bloodydash.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Explanation

### What is Bloodline?

First of all: Bloodline allows you to select RPCs for specified RPC calls

<Note>
  **For example** you have 2 RPCs - `A and B`.

  * `A` is good for data fetch but not for sending transactions.
  * `B` has good landing rate but can't properly fetch needed data.

  Using bloodline you can assign `sendTransaction` call for B RPC and `getBalance` call for A RPC. All methods (calls) can be found at [https://solana.com/docs/rpc/http](https://solana.com/docs/rpc/http)
</Note>

<Note>
  **For example** you don't have RPC but you know BLOOD has RPCs with limitations (some calls are banned) - how do I setup then?

  * Buy Helius developer plan for 50\$ a month
  * Modify your Bloodline config with the following fields
</Note>

```toml theme={null}
defaults = ['blood_node_us']

# RPC name to URL mapping
[rpcs]
blood_node_us = 'http://ny.rpc.bloodydash.xyz:11123/'
blood_node_eu = 'http://fra.rpc.bloodydash.xyz:11123/'
hel = 'https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY'

# Method name to RPCs mapping
[methods]
sendTransaction = ['hel']
getTokenAccountsByOwner = ['hel']
getTokenLargestAccounts = ['hel']
getProgramAccounts = ['hel']
getBlock = ['hel']
getTransaction = ['hel']
getSignaturesForAddress = ['hel']
getMultipleAccounts = ['hel']
```

Moreover: Using Bloodline allows you to change / edit RPCs in the real time, without closing the bot or stop tasks

<Note>
  **For example** you are running tasks and after some time you see that one of your RPCs is dead. If you use Bloodline you can close it, replace dead RPC with a good one and open it again without a need to restart bot / tasks
</Note>

### How to use Bloodline?

1. Download file from `bloodline` channel in discord.
2. Place it in empty folder and open it, config file will be created.
3. Fill your [Config](/addons/bloodline/config) file and start bloodline again.
4. You will see `Address` on first line, copy it and paste in Blood bot `RPC` file and assign name (no need to paste WS there).
5. Use this RPC name in task.

<Danger>
  Once you have opened executive file you must NOT close it. You can hide it, but if you close bloodline won't work
</Danger>