Transfer

L3 transfer

Name	Type	Required	Description
type	String	yes	The value is "Transfer"
accountId	AccountId	yes	Account ID of the from_account
fromSubAccountId	SubAccountId	yes	Subaccount ID of the from_account
toSubAccountId	SubAccountId	yes	Sub-account ID of the to_account
to	String	yes	Account address of the to_account, if the account does not exist, a new account will be automatically created on zkLink Layer3 for this address
token	TokenId	yes	Token ID
amount	BigUint	yes	Token amount, the value must be packable
fee	BigUint	yes	Fee returned by estimateTransactionFee API, the value should be packable
nonce	Nonce	yes	Current nonce of the account |
signature	ZkLinkSignature	yes	the public key hash corresponding to the signature must be aligned with the from_account
ts	u32	yes	Timestamp of the API call, used as front-end request id to generate transaction hash

For example:

{
  "type": "Transfer",
  "accountId": 8,
  "fromSubAccountId": 3,
  "toSubAccountId": 3,
  "to": "0xbfDa941Bd2a0eddB57b10f8E8d3486A738B92cCC",
  "token": 3,
  "amount": "998000000000000000",
  "fee": "3000000000000000",
  "ts": 1646101085,
  "nonce": 1,
  "signature": {
    "pubKey": "0x0dd4f603531bd78bbecd005d9e7cc62a794dcfadceffe03e269fbb6b72e9c724",
    "signature": "892c622afac908201df54a3cfdecf8eba46d5411bdc29365f5536f024c195f2893d6313a6371fe1659830e2560c1eaedbafcc835837593d017cd557074f0bb03"
  }
}

sign Transfer

Golang

import (
	"math/big"
	"fmt"
	sdk "github.com/zkLinkProtocol/zklink_sdk/go_example/generated/uniffi/zklink_sdk"
)
func SignTransfer() {
    privateKey := "0xbe725250b123a39dab5b7579334d5888987c72a58f4508062545fe6e08ca94f4"
    address := sdk.ZkLinkAddress("0xAFAFf3aD1a0425D792432D9eCD1c3e26Ef2C42E9")
    builder := sdk.TransferBuilder {
        sdk.AccountId(1),
        address,
        sdk.SubAccountId(1),
        sdk.SubAccountId(1),
        sdk.TokenId(18),
        *big.NewInt(100000),
        *big.NewInt(100),
        sdk.Nonce(1),
        sdk.TimeStamp(1693472232),
    }
    tokenSymbol := "DAI"
    tx := sdk.NewTransfer(builder)
    signer, err := sdk.NewSigner(privateKey)
    if err != nil {
        return
    }
    txSignature, err := signer.SignTransfer(tx, tokenSymbol)
    if err != nil {
        return
    }
    fmt.Println("L1 signature: %s", txSignature.Layer1Signature)
    fmt.Println("signed Tx: %s", txSignature.Tx)
    submitterSignature, err := signer.SubmitterSignature(txSignature.Tx)
    fmt.Println("submitter signature: %s, %s", submitterSignature.PubKey, submitterSignature.Signature)
}

For more details please refer to Golang example in SDK

Javascript

import init, *  as wasm  from "./web-dist/zklink-sdk-web.js";

async function main() {
    await init();
    const to_address = "0x5505a8cD4594Dbf79d8C59C0Df1414AB871CA896";
    const ts  = Math.floor(Date.now() / 1000);
    try {
        let amount = wasm.closestPackableTransactionAmount("1234567899808787");
        let fee = wasm.closestPackableTransactionFee("10000567777")
        let tx_builder = new wasm.TransferBuilder(10, to_address, 1,
            1, 18, fee, amount, 1,ts);
        let transfer = wasm.newTransfer(tx_builder);
        let signer = new wasm.JsonRpcSigner();
        await signer.initZklinkSigner();
        let signature = await signer.signTransfer(transfer,"USDC")
        console.log(signature);

        let submitter_signature = signer.submitterSignature(signature.tx);
        console.log(submitter_signature);
        let rpc_client = new wasm.RpcClient("testnet");
        let l1_signature = new wasm.TxLayer1Signature(wasm.L1SignatureType.Eth,signature.eth_signature);
        let tx_hash = await rpc_client.sendTransaction(signature.tx,l1_signature,submitter_signature);
        console.log(tx_hash);

    } catch (error) {
        console.error(error);
    }

}