| Protocol       | Network                               | Path Parameter                   | Get Block By               |
| -------------- | ------------------------------------- | --------------------------------| --------------------------- |
| Algorand       | Mainnet                               | `algorand/mainnet`            | block number                |
| Avalanche      | Mainnet                               | `avalanche/mainnet-c`        | block number or hash        |
|                | Testnet                               | `avalanche/testnet-c`        |                             |
| Bitcoin        | Mainnet                               | `bitcoin/mainnet`            | block number or hash        |
|                | Testnet                               | `bitcoin/testnet`            |                             |
|                | Testnet4                              | `bitcoin/testnet4`          |                             |
| Bitcoincash    | Mainnet                               | `bitcoincash/mainnet`       | block number or hash        |
|                | Testnet                               | `bitcoincash/testnet`       |                             |
| Dogecoin       | Mainnet                               | `dogecoin/mainnet`           | block number or hash        |
|                | Testnet                               | `dogecoin/testnet`           |                             |
| Ethereum       | Mainnet                               | `ethereum/mainnet`           | block number or hash        |
|                | Sepolia                               | `ethereum/sepolia`          |                             |
|                | Hoodi                                 | `ethereum/hoodi`            |                             |
| Litecoin       | Mainnet                               | `litecoin/mainnet`           | block number or hash        |
|                | Testnet                               | `litecoin/testnet`           |                             |
| Near           | Mainnet                               | `near/mainnet`               | block number                |
| Optimism       | Mainnet                               | `optimism/mainnet`           | block number or hash        |
| Polkadot       | Mainnet                               | `polkadot/mainnet`           | block number or hash        |
|                | Westend                               | `polkadot/westend`          |                             |
| Polygon        | Mainnet                               | `polygon/mainnet`            | block number or hash        |
|                | Amoy                                  | `polygon/amoy`               |                             |
| Solana         | Mainnet                               | `solana/mainnet`             | block number                |
|                | Testnet                               | `solana/testnet`             |                             |
|                | Devnet                                | `solana/devnet`              |                             |
| Stellar        | Mainnet                               | `stellar/mainnet`            | block number                |
|                | Testnet                               | `stellar/testnet`            |                             |
| XRP            | Mainnet                               | `xrp/mainnet`                | block number or hash        |
|                | Testnet                               | `xrp/testnet`                |                             |

### API Specifications

**protocol**  
Type: `string`  
Required: Yes  
Default: `bitcoin`  
Options: `algorand`, `avalanche`, `bitcoin`, `bitcoincash`, `dogecoin`, `ethereum`, `litecoin`, `near`, `optimism`, `polkadot`, `polygon`, `solana`, `stellar`, `tezos`, `xrp`

**network**  
Type: `string`  
Required: Yes  
Default: `mainnet`  
Details: Which network to target. Available networks can be found in the above list or with `/{protocol}`.

**block_identifier**  
Type: `string`  
Required: Yes  
Default: `0000000000000000000590fc0f3eba193a278534220b2b37e9849e1a770ca959`  
Details: The block identifier, hash or number.

### Response Codes

- `200`   Block 
- `400`   Invalid Block hash 
- `401`   Invalid or expired token 
- `404`   Not Found 
- `429`   Rate limit exceeded 
- `500`   An internal server error happened 
- `503`   The resource you are trying to access is currently unavailable

---

### Example cURL Command

```bash
curl --request GET \
     --url https://svc.blockdaemon.com/universal/v1/bitcoin/mainnet/block_identifier/0000000000000000000590fc0f3eba193a278534220b2b37e9849e1a770ca959 \
     --header 'X-API-Key: ••••' \
     --header 'accept: application/json'
```

---

The Base URL for requests is:

```
https://svc.blockdaemon.com/universal/v1/{protocol}/{network}/block_identifier/{block_identifier}
```