# Deposit

Deposit from Layer 1 to [zkLink layer](/developer/api-and-sdk/transaction/deposit.md).

<table><thead><tr><th width="20">Name</th><th width="20">Type</th><th width="10">Required</th><th width="250">Description</th></tr></thead><tbody><tr><td></td><td></td><td></td><td></td></tr><tr><td>type</td><td>String</td><td>yes</td><td>The value is "Deposit"</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>fromChainId</td><td><a href="/pages/9wsGjTwfpfc2nyUJWAzS#chainid">ChainId</a></td><td>yes</td><td>The chain id defined by zkLink, the chain that the deposit is initiated on</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>from</td><td>String</td><td>yes</td><td>The initiator address of the deposit</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>to</td><td>String</td><td>yes</td><td>The recipient of the deposit. An account will be created if it does not exist on zkLink Layer3</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>subAccountId</td><td><a href="/pages/9wsGjTwfpfc2nyUJWAzS#subaccountid">SubAccountId</a></td><td>yes</td><td>The subaccount id of the recipient</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>l1SourceToken</td><td><a href="/pages/9wsGjTwfpfc2nyUJWAzS#tokenid">TokenId</a></td><td>yes</td><td>The token deducted from the initiator on Layer 1</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>l2TargetToken</td><td><a href="/pages/9wsGjTwfpfc2nyUJWAzS#tokenid">TokenId</a></td><td>yes</td><td>The token received by the recipient on zkLink Layer 3</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>amount</td><td><a href="/pages/BDCFoF8VRxOutzyi5iLV">BigUint</a></td><td>yes</td><td>The amount of deposit</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>serialId</td><td>u64</td><td>yes</td><td>The serial number of the event, used as nonce</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>l2Hash</td><td><a href="/pages/9wsGjTwfpfc2nyUJWAzS#txhash">TxHash</a></td><td>no</td><td>Transaction hash of linea/zksync/starket</td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>ethHash</td><td><a href="/pages/9wsGjTwfpfc2nyUJWAzS#txhash">TxHash</a></td><td>no</td><td>Transaction hash of ethereum, exist when deposit from Ethereum bridge to linea/zksync/starket</td></tr></tbody></table>

For example:

```json
{
    "type": "Deposit",
    "fromChainId": 1,
    "from": "0x76920dfacad4f28f97d6209977c1057b9e3e5cad",
    "subAccountId": 1,
    "l1SourceToken": 18,
    "l2TargetToken": 1,
    "amount": "4000000000000000000000",
    "to": "0x76920dfacad4f28f97d6209977c1057b9e3e5cad",
    "serialId": 53,
    "l2Hash": "0xaaa1e7a5bc48e7cfaa562a4d1a5abc1d6dc5e7f7683e89eb00e895d438f0acab"
}
```


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