---
title: getLatestBlockhash
hideTableOfContents: true
h1: getLatestBlockhash RPC Method
---

Returns the latest blockhash

<Callout type="warn" title={"Version Restriction"}>
  This method is only available in `solana-core` v1.9 or newer. Please use
  [getRecentBlockhash](/docs/rpc/http/getrecentblockhash) for `solana-core` v1.8
  and below.
</Callout>

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### Parameters

<Parameter type={"object"} optional={true}>

Configuration object containing the following fields:

<Field
  name="commitment"
  type="string"
  optional={true}
  href="/docs/rpc/index.mdx#configuring-state-commitment"
/>

<Field name="minContextSlot" type="number" optional={true}>
  The minimum slot that the request can be evaluated at
</Field>

</Parameter>

### Result

`RpcResponse<object>` - RpcResponse JSON object with `value` field set to a JSON
object including:

- `blockhash: <string>` - a Hash as base-58 encoded string
- `lastValidBlockHeight: <u64>` - last
  [block height](/docs/references/terminology#block-height) at which the
  blockhash will be valid

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### Code sample

```shell
curl https://api.devnet.solana.com -s -X POST -H "Content-Type: application/json" -d '
  {
    "id":1,
    "jsonrpc":"2.0",
    "method":"getLatestBlockhash",
    "params":[
      {
        "commitment":"processed"
      }
    ]
  }
'
```

### Response

```json
{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "slot": 2792
    },
    "value": {
      "blockhash": "EkSnNWid2cvwEVnVx9aBqawnmiCNiDgp3gUdkDPTKN1N",
      "lastValidBlockHeight": 3090
    }
  },
  "id": 1
}
```

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