namillum/docs/api/contract-related-methods/api-contract-get-state-proof.md

Bubble Protocol SDK

---
id: api-contract-get-state-proof
title: GetStateProof
---

---

Returns the state proof for the corresponding TxBlock for a smart contract. Please note that this API only serve state proof for the last 50 TxBlock.

This API is available from Zilliqa `V8.1.0` onwards.

### Example Request

=== "cURL"

    ```shell
    curl -d '{
        "id": "1",
        "jsonrpc": "2.0",
        "method": "GetStateProof",
        "params": ["6d84363526a2d764835f8cf52dfeefe80a360fac","A0BD91DE66D97E6930118179BA4F1836C366C4CB3309A6B354D26F52ABB2AAC6","39"]
    }' -H "Content-Type: application/json" -X POST "https://api.zilliqa.com/"
    ```

=== "Node.js"

    ```js
    const stateProof = await zilliqa.blockchain.getSmartContractSubState(
      "fe001824823b12b58708bf24edd94d8b5e1cfcf7"
    );
    console.log(stateProof.result);
    ```

=== "Go"

    ```go
    func GetStateProof() {
        provider := NewProvider("https://dev-api.zilliqa.com")
        response, _ := provider.GetStateProof("6d84363526a2d764835f8cf52dfeefe80a360fac", "A0BD91DE66D97E6930118179BA4F1836C366C4CB3309A6B354D26F52ABB2AAC6","39")
        result, _ := json.Marshal(response)
        fmt.Println(string(result))
    }
    ```

### Example Response

```json
{
  "accountProof": [
    "F851808080A0C7083D05AC726A32DC3313B5CA7526449EFCADAB51179A47B60901C63B108E908080A0BC76B4E969C8214F2DF641D3F387AA35CDBF17EEB54D23F5F01B4E688AB2A21980808080808080808080",
    "F871808080A0D5FE2E3CEA6C64AD708DFAD93B79FC9894C5A5AE59372D3C3872C1C8143CD749A087B1E084016657B3F8D32B429AE8055A63F12811DDFDC3AA8E863F25A03781F4A0AEDA08F7295A9E63544F9EAE728EBF98D571A07757E4BD95C91749CE9CC40B858080808080808080808080",
    "F887A820376538396338303535623466306165633037376235396535646461326662346331346638313466B85C080112120A10000000000000000000000000000000001800222045EEB1C2D2462F819E2CA893329EEB25FA29199160C28C8DDF30A10E04CCF05D2A20DDD90D4C45815116C8F23802FC3E5ED0B6D8B6A2A25EAF63680A406A33094A85"
  ],
  "stateProof": [
    "E213A01CE797360949BDEBE357D68D54CD592D300084732CEE4F93A4ED41BDDBACD016",
    "E216A042A6C50E3845BDB58866500B65D1721DD45AC4E8BE0A4FEE6AEB4E0140D9E4E3",
    "F841B83E203533393936303466316439303130376230396232393832326630643534636638633038656532623931663165353062316435363336643331393062376532",
    "F851808080A04569AAF476CCD06BA5F31049E02C00C6FD1B6AF44C90F9EF139F6DA919B0D1FA8080A0F27A4D7A3733D624A18316E4F9D1785349462FE39EA3842A62CDF2B4D7A29B8880808080808080808080",
    "F8518080A0CA36C33D7030330EA93A73F03A8E8B05F3661C268D79184168BA5D93B0F91009808080A053C216D9015F58FF44AC4984F2482A4B06E27B7284680D9DF0BDF5494F0048EF80808080808080808080",
    "F85180A0F61D98347C0929D0A2F9354110BB4FD2F0DE083AE1B1D8AEDAA961FA5D7803108080A0F637E8D9A259DF234DB75FF9983B10D57C8B0B8015D07003F0EB6C86732465DF808080808080808080808080",
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
  ]
}
```

### HTTP Request

| Chain(s)              | URL(s)                                                                                       |
| --------------------- | -------------------------------------------------------------------------------------------- |
| **Zilliqa mainnet**   | [https://api.zilliqa.com/](https://api.zilliqa.com/)                                         |
| **Developer testnet** | [https://dev-api.zilliqa.com/](https://dev-api.zilliqa.com/)                                 |
| **Local testnet**     | [http://localhost:4201/](http://localhost:4201/)                                             |
| **Isolated server**   | [https://zilliqa-isolated-server.zilliqa.com/](https://zilliqa-isolated-server.zilliqa.com/) |

### Arguments

| Parameter | Type   | Required | Description          |
| --------- | ------ | -------- | -------------------- |
| `id`      | string | Required | `"1"`                |
| `jsonrpc` | string | Required | `"2.0"`              |
| `method`  | string | Required | `"GetStateProof"`    |
| `params`  | array  | Required | `"Proof Parameters"` |

### Proof Parameters

| Parameter       | Type   | Required | Description                                                     |
| --------------- | ------ | -------- | --------------------------------------------------------------- |
| `Address`       | string | Required | A smart contract address of 20 bytes.                           |
| `Variable Hash` | string | Required | SHA256 hash of the state variable                               |
| `TxBlock`       | string | Required | Can be a valid number or `latest` if looking for latest TxBlock |