This event is triggered when a blockchain reorganization (reorg) occurs on a given chain. This can happen for several reasons, including:

- A different block replaces the latest block at the chain's height.
- Multiple blocks are produced simultaneously due to a bug or a malicious attack.

## Supported Protocols

- `base/mainnet`
- `base/sepolia`
- `bitcoin/mainnet`
- `bitcoin/testnet`
- `bitcoin/testnet4`
- `bitcoincash/mainnet`
- `bitcoincash/testnet`
- `bnb/mainnet`
- `bnb/testnet`
- `dogecoin/mainnet`
- `dogecoin/testnet`
- `ethereum/mainnet`
- `ethereum/sepolia`
- `ethereum/hoodi`
- `kaia/mainnet`
- `kaia/testnet`
- `litecoin/mainnet`
- `litecoin/testnet`
- `monad/mainnet`
- `monad/testnet`
- `polkadot/mainnet`
- `polkadot/westend`
- `polygon/mainnet`
- `polygon/amoy`
- `tron/mainnet`
- `tron/nile`

## Schema

JSON

```json
{
  "data": {
    "block_number": "integer",
    "block_hash": "string",
    "block_timestamp": "integer"
  }
}
```

The table below shows the schema breakdown:

| Field | Type | Description |
| --- | --- | --- |
| `block_hash` | string | ( **Required**) The block hash. |
| `block_number` | integer | ( **Required**) The block number. |
| `block_timestamp` | integer | ( **Required**) The UNIX timestamp when the block was mined/validated. |

## Examples

```json
{
    "protocol": "bitcoin",
    "network": "mainnet",
    "event_type": "unified_reorg",
    "chain_id": "bip122:000000000019d6689c085ae165831e93",
    "data": {
        "block_hash": "0000000000000000000278b53131091627eaa00f772f3c7b2a59c374666520d7",
        "block_number": 831663,
        "block_timestamp": 1708679008
    }
}
```

```json
{
		"protocol": "dogecoin",
		"network": "mainnet",
		"event_type": "unified_reorg",
		"chain_id": "bip122:1a91e3dace36e2be3bf030a65679fe82",
		"data": {
			"block_hash": "0000000000000000000278b53131091627eaa00f772f3c7b2a59c374666520d7",
			"block_number": 831663,
			"block_timestamp": 1708679008
  }
}
```

```json
{
    "protocol": "polkadot",
    "network": "mainnet",
    "event_type": "unified_reorg",
    "chain_id":"polkadot:91b171bb158e2d3848fa23a9f1c25182",
    "data": {
        "block_number": 19583058,
        "block_hash": "0x5763259919f255eb0330a9820182edabe42e5de4297ad7b49824f9a591d8a8a8",
        "block_timestamp": 1708529886
    }
}
```