childstate_getStorage - JSON-RPC Method

Description

Fetches the SCALE-encoded value stored at a given key inside a child trie. Child tries are used by pallets that isolate per-account state, such as managed wallets or contracts modules.

Parameters

Parameter	Type	Required	Description
childStorageKey	string	Yes	Hex-encoded child trie identifier
storageKey	string	Yes	Hex-encoded key inside the child trie
blockHash	string | null	No	Optional block hash for historical reads

Request Example

{
  "jsonrpc": "2.0",
  "method": "childstate_getStorage",
  "params": [
    "0x3a6368696c645f73746f726167653a5f6578616d706c65",
    "0x6b65795f3031",
    null
  ],
  "id": 1
}

Response Example

{
  "jsonrpc": "2.0",
  "result": null,
  "id": 1
}

A null response indicates that the key currently has no value in the child trie or that child storage access is disabled on the queried endpoint.

Notes

• Use childstate_getKeys or pallet metadata to discover child storage keys.
• Values must be decoded with the SCALE codec corresponding to the child trie owner pallet.
• Access to child storage is often restricted to collators or trusted API keys for security reasons.