> For the complete documentation index, see [llms.txt](https://docs.bifrostnetwork.com/bifrost-network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bifrostnetwork.com/bifrost-network/developer-documentations/client-api/json-rpc-api/childstate.md).

# childstate

###

### **getKeys(childKey: `PrefixedStorageKey`, prefix: `StorageKey`, at?: `Hash`): `Vec<StorageKey>`**

* **interface**: `api.rpc.childstate.getKeys`
* **jsonrpc**: `childstate_getKeys`
* **summary**: Returns the keys with prefix from a child storage, leave empty to get all the keys

### **getKeysPaged(childKey: `PrefixedStorageKey`, prefix: `StorageKey`, count: `u32`, startKey?: `StorageKey`, at?: `Hash`): `Vec<StorageKey>`**

* **interface**: `api.rpc.childstate.getKeysPaged`
* **jsonrpc**: `childstate_getKeysPaged`
* **summary**: Returns the keys with prefix from a child storage with pagination support

### **getStorage(childKey: `PrefixedStorageKey`, key: `StorageKey`, at?: `Hash`): `Option<StorageData>`**

* **interface**: `api.rpc.childstate.getStorage`
* **jsonrpc**: `childstate_getStorage`
* **summary**: Returns a child storage entry at a specific block state

### **getStorageEntries(childKey: `PrefixedStorageKey`, keys: `Vec<StorageKey>`, at?: `Hash`): `Vec<Option<StorageData>>`**

* **interface**: `api.rpc.childstate.getStorageEntries`
* **jsonrpc**: `childstate_getStorageEntries`
* **summary**: Returns child storage entries for multiple keys at a specific block state

### **getStorageHash(childKey: `PrefixedStorageKey`, key: `StorageKey`, at?: `Hash`): `Option<Hash>`**

* **interface**: `api.rpc.childstate.getStorageHash`
* **jsonrpc**: `childstate_getStorageHash`
* **summary**: Returns the hash of a child storage entry at a block state

### **getStorageSize(childKey: `PrefixedStorageKey`, key: `StorageKey`, at?: `Hash`): `Option<u64>`**

* **interface**: `api.rpc.childstate.getStorageSize`
* **jsonrpc**: `childstate_getStorageSize`
* **summary**: Returns the size of a child storage entry at a block state