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://zil.nownodes.io/"
```

=== "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

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

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