GetBlock is a Blockchain-as-a-Service platform providing API access to full blockchain nodes. It allows developers to interact with blockchains using JSON-RPC, REST, and WebSocket protocols.

## Why Choose GetBlock?
- **Broad Blockchain Support:** Access Ethereum, Bitcoin, Binance Smart Chain, Solana, and more.
- **High Availability:** Enterprise-grade reliability with 99.95% uptime.
- **Scalable Solutions:** Pay-as-you-go plans tailored to your project size.


## Supported Protocols
GetBlock supports these protocols for interacting with blockchain nodes:
- **JSON-RPC**
- **REST**
- **WebSocket**

## Key Blockchain Networks
- **Ethereum** (`eth-mainnet`, `eth-goerli`)
- **Bitcoin** (`btc-mainnet`, `btc-testnet`)
- **Binance Smart Chain** (`bsc-mainnet`, `bsc-testnet`)
- **Polygon** (`matic-mainnet`, `matic-testnet`)


## **Getting Started with GetBlock API**

### 1. Sign Up and Get an access Token
- Create an account at [GetBlock.io](https://getblock.io).
- Generate an [access token](https://getblock.io/docs/get-started/auth-with-access-token/) from your dashboard.

### 2. Configure Your Endpoint
- Base URL:
  ```
  https://{blockchain}.getblock.io/mainnet/YOUR_API_KEY/
  ```
  Replace `{blockchain}` with the desired blockchain name (e.g., `eth`).


## **Make Your First Call**

1. Use a tool like Postman.
2. Use the Ethereum endpoint as an example:
   ```bash
   https://go.getblock.io/

:::

## **Advanced Features**

### Batch Requests
Send multiple requests in a single API call for efficiency:
```json
[
  { "jsonrpc": "2.0", "method": "eth_blockNumber", "params": [], "id": 1 },
  { "jsonrpc": "2.0", "method": "eth_getBalance", "params": ["0xAddress", "latest"], "id": 2 }
]
```

### Real-Time Updates with WebSocket
Subscribe to Ethereum new block events:
```json
{
  "jsonrpc": "2.0",
  "method": "eth_subscribe",
  "params": ["newHeads"],
  "id": 1
}
```