Make Transaction
In the following article, we will use this wallet as example:
Address: 0x026A25EfbcEFb2e481d005E4F00Ccced0AF511FF
Private Key: 0x1c1a49fea9a4ede1dc8e582639f498d41fa3c4a9e2ab2b9d740a4a3ec14e1cbf
The only transaction that made on Layer-1 is deposit. It has two sub-types which are
DepositETH and DepositERC20.[
{
"constant": false,
"inputs": [
{
"internalType": "contract IERC20",
"name": "_token",
"type": "address"
},
{
"internalType": "uint104",
"name": "_amount",
"type": "uint104"
},
{
"internalType": "address",
"name": "_franklinAddr",
"type": "address"
}
],
"name": "depositERC20",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"internalType": "address",
"name": "_franklinAddr",
"type": "address"
}
],
"name": "depositETH",
"outputs": [],
"payable": true,
"stateMutability": "payable",
"type": "function"
}
]
​
Example Code:
import { Wallet, Contract, utils } from 'ethers'
​
const contract = new Contract('0x8ECa806Aecc86CE90Da803b080Ca4E3A9b8097ad', ABI, wallet)
const wallet = new Wallet('0x1c1a49fea9a4ede1dc8e582639f498d41fa3c4a9e2ab2b9d740a4a3ec14e1cbf')
​
async function depositETH(amount) {
const tx = await contract.depositETH(wallet.address, {
value: utils.parse(amount)
})
return tx
}
​
// deposit 1 ETH
depositETH('1').then(console.log)
Like other projects, you must approve ZKSwap's main contract address to spend your ERC20 tokens in order to deposit. Be careful for those tokens that has limit on changing allowance (See https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729).
Example code:
import { Wallet, Contract, utils } from 'ethers'
​
const contract = new Contract('0x8ECa806Aecc86CE90Da803b080Ca4E3A9b8097ad', ABI, wallet)
const wallet = new Wallet('0x1c1a49fea9a4ede1dc8e582639f498d41fa3c4a9e2ab2b9d740a4a3ec14e1cbf')
​
async function depositERC20(amount, tokenAddress) {
const tokenContract = new Contract(tokenAddress, ERC20_ABI, wallet)
// check allowance
const allowance = await tokenContract.allowance(wallet.address, MAIN_CONTRACT_ADDRESS)
let nonce
if (allowance.lt(utils.parse(amount)) {
// approve
const MAX_AMOUNT = '0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'
const approveTx = await tokenContract.allow(MAIN_CONTRACT_ADDRESS, MAX_AMOUNT)
nonce = approveTx.nonce + 1
}
const tx = await contract.depositERC20(tokenAddress, utils.parse(amount), wallet.address, {
nonce
})
return tx
}
​
// deposit 100 ZKS
depositERC20('100', '0xe4815ae53b124e7263f08dcdbbb757d41ed658c6').then(console.log)
When submitting transaction to ZKSwap, the API requires 3 fields:
tx, signature and fastProcessing.In the following docs, Signed Transaction refers to the tx field and ETH Signature refers to the signature field.Sign the following message with Layer-1's private key to get Layer-2's seed. And use zkSync's crypto libraries to get private key.
Plain Text
JavaScript
Access ZKSwap account.
​
Only sign this message for a trusted client!
const msg = 'Access ZKSwap account.\n\nOnly sign this message for a trusted client!'
import { Wallet, Contract, utils } from 'ethers'
import { privateKeyFromSeed, private_key_to_pubkey_hash } from 'zksync-crypto'
​
const wallet = new Wallet('0x1c1a49fea9a4ede1dc8e582639f498d41fa3c4a9e2ab2b9d740a4a3ec14e1cbf')
​
async function getPrivateKey() {
const msg = 'Access ZKSwap account.\n\nOnly sign this message for a trusted client!'
const signature = await wallet.signMessage(msg)
const seed = utils.arrayify(signature)
​
// Get private key
const privateKey = privateKeyFromSeed(seed)
return privateKey
}
​
getPrivateKey().then(console.log)
After getting private key, you will need to register you publick key hash to ZKSwap so that it can verify transations that you sent.
import { utils } from 'ethers'
import { private_key_to_pubkey_hash } from 'zksync-crypto'
​
const pubKeyHash = `sync:${utils.hexlify(private_key_to_pubkey_hash(privateKey)).substr(2)}`
Before submit transaction to ZKSwap, you need to sign the the transaction data.
import { utils } from 'ethers'
import { sign_musig } from 'zksync-crypto'
​
function signMessage(privateKey, msgBytes) {
const signaturePacked = sign_musig(privateKey, msgBytes)
const pubKey = utils.hexlify(signaturePacked.slice(0, 32)).substr(2)
const signature = utils.hexlify(signaturePacked.slice(32)).substr(2)
return {
pubKey,
signature
}
}
​
const msgBytes = utils.concat([type, accountId, ...etc])
const signature = signMessage(privateKey, msgBytes)
​
After the account has been "registered" on ZKSwap (via transfer or deposit), you can change the account's
pubKeyHash in order to make any transaction on Layer-2. This is a special transaction that you don't need to sign it with Layer-2's private key.Transaction Fields
Field | Type | Comment |
type | string | ChangePubKey |
accountId | number | Your account ID. |
account | address | Your address. |
newPkHash | number | The public key hash. |
nonce | number | Your current nonce. |
ethSignature | string | Layer-1 signature |
Signed Transaction Example
{
"type": "ChangePubKey",
"accountId": 83670,
"account": "0x026A25EfbcEFb2e481d005E4F00Ccced0AF511FF",
"newPkHash": "sync:83f62ba777515089eb905a375f77f59ddfada116",
"nonce": 0,
"ethSignature": "0x66c1ef3611a634e400301375b291a0835b0e31237273e1bdab45acc3ef27c761674fd5e5a706566e5175e8e18306f5b8d1d36016f3894e84d527c3c97e92bcf71c"
}
ETH Signature
Message Template
Message to sign
Signature
Register ZKSwap pubkey:
​
{pubKeyHash}
nonce: {hexlifiedNonce}
account id: {hexlifiedAccountId}
​
Only sign this message for a trusted client!
Register ZKSwap pubkey:
​
83f62ba777515089eb905a375f77f59ddfada116
nonce: 0x00000000
account id: 0x000146d6
​
Only sign this message for a trusted client!
0x66c1ef3611a634e400301375b291a0835b0e31237273e1bdab45acc3ef27c761674fd5e5a706566e5175e8e18306f5b8d1d36016f3894e84d527c3c97e92bcf71c
Transaction Fields
Bytes Order | Field | Type | Bytes Length | Comment | Bytes Example |
0 | type | string | 1 | Transfer | 0x05 |
1 | accountId | number | 4 | Your account ID. | 0x0000053a |
2 | from | address | 20 | Your address. | 0x026a25efbcefb2e481d005e4f00ccced0af511ff |
3 | to | address | 20 | The target address you want to transfer. | 0x961b513dfd3e363c238e0f98219ee02552a847bd |
4 | token | number | 2 | The ID of the token. | 0x000a |
5 | amount | string | 5 | The packed amount you want to transfer. | 0x4a817c8008 |
6 | feeToken | number | 1 | The ID of fee token. | 0x0a |
7 | fee | string | 2 | ​ | 0x0000 |
8 | chainId | number | 1 | 11 for mainnet, 128 for ropsten. | 0x0b |
9 | nonce | number | 4 | Your current nonce. | 0x00000001 |
- | signature | object | ​ | Contains your pubKey and signature. | ​ |
Full Bytes Example
0x050000053a026a25efbcefb2e481d005e4f00ccced0af511ff961b513dfd3e363c238e0f98219ee02552a847bd000a4a817c80080a00000b00000001
Signed Transaction Example
{
"type": "Transfer",
"accountId": 1338,
"from": "0x026A25EfbcEFb2e481d005E4F00Ccced0AF511FF",
"to": "0x961b513dfd3e363c238e0f98219ee02552a847bd",
"token": 10,
"amount": "1000000000000000000",
"feeToken": 10,
"fee": "0",
"chainId": 11,
"nonce": 1,
"signature": {
"pubKey": "110ffd569daaee30068fc3c85922d1237f63a41d4749d464b883131e92369204",
"signature": "7db4f4ce33abf89cbccaff96ae0651c79043dcf965893de71e7388163ec57883b2d4ef9bf264346ceff69f9ba8dfe8624d1fad9a452acf10a5d15f956a0a7b03"
}
}
ETH Signature
Message Template
Message Example
Signature
Transfer {readableAmount} {tokenSymbol}
To: {to}
ChainId {chainId}
Nonce: {nonce}
Fee: {readableFee} {feeTokenSymbol}
Account Id: {accountId}
Transfer 1.0 ZKS
To: 0x961b513dfd3e363c238e0f98219ee02552a847bd
Chain Id: 11
Nonce: 1
Fee: 0.0 ZKS
Account Id: 1338
{
"type": "EthereumSignature",
"signature": "0xbf8fa93e7da866aa3acb07a6a826e5e61195eba04e3c72a4f02b8fc8221da1f764363817968576013ca515ffe5e1104b5890937150883f3304d0738777af915b1c"
}
Transaction Fields
Bytes Order | Field | Type | Bytes Length | Comment | Bytes Example |
0 | type | string | 1 | Withdraw | 0x03 |
1 | accountId | number | 4 | Your account ID. | 0x0000053a |
2 | from | address | 20 | Your address. | 0x026a25efbcefb2e481d005e4f00ccced0af511ff |
3 | to | address | 20 | The target address you want to withdraw to. | 0x026a25efbcefb2e481d005e4f00ccced0af511ff |
4 | token | number | 2 | The ID of the token you want to withdraw. | 0x000a |
5 | amount | string | 16 | The amount you want to withdraw. | 0x00000000000000000de0b6b3a7640000 |
6 | feeToken | number | 1 | The ID of fee token. | 0x0a |
7 | fee | string | 2 | ​ | 0x4bf0 |
8 | chainId | number | 1 | 11 for mainnet, 128 for ropsten. | 0x0b |
9 | nonce | number | 4 | Your current nonce. | 0x00000002 |
- | signature | object | ​ | Contains your pubKey and signature. | ​ |
Full Bytes Example
0x030000053a026a25efbcefb2e481d005e4f00ccced0af511ff026a25efbcefb2e481d005e4f00ccced0af511ff000a00000000000000000de0b6b3a76400000a4bf00b00000002
Signed Transaction Example
{
"type": "Withdraw",
"accountId": 1338,
"from": "0x026A25EfbcEFb2e481d005E4F00Ccced0AF511FF",
"to": "0x026a25efbcefb2e481d005e4f00ccced0af511ff",
"token": 10,
"amount": "1000000000000000000",
"feeToken": 10,
"fee": "6070000000000000000",
"chainId": 11,
"nonce": 2,
"signature": {
"pubKey": "110ffd569daaee30068fc3c85922d1237f63a41d4749d464b883131e92369204",
"signature": "68bb8413edc0182812aa90481ff46f0514df9d5d6b5703338f1a292682caad9b04cac623f95b9d26fa31d4a9330ba35b5746fd697853a0512f92b00692fe6d00"
}
}
ETH Signature
Message Template
Message Example
Signature
Withdraw {readableAmount} {tokenSymbol}
To: {to}
ChainId {chainId}
Nonce: {nonce}
Fee: {readableFee} {feeTokenSymbol}
Account Id: {accountId}
Withdraw 3.4226556417 ZKS
To: 0x026a25efbcefb2e481d005e4f00ccced0af511ff
ChainId 10
Nonce: 2
Fee: 1.577 ZKS
Account Id: 83670
{
"type": "EthereumSignature",
"signature": "0x0440667d6a694b76e5f3a51fa3981a3db95bfc7d3feeb301f403ea6f3bef01d32c9e06920f7b13edd92a6cb22f49d6709fb4f9d41efc09b0a094173b6bbb4f121b"
}
Let's take swap token A for token B as example. There are two cases:
- 1.If A is a fee token, the fee token of swap is A. The number of fee is calculated by
amountIn * 5 / 9995 - 2.If A is not a fee token, the fee token of swap is B. The number of fee is
amountOut * 5 /10000. It's notamountOutMin.amountOutequalsamountOutMinthen slipplage is 0.
Transaction Fields
Bytes Order | Field | Type | Bytes Length | Comment | Bytes Example |
0 | type | string | 1 | Swap | 0x0b |
1 | accountId | number | 4 | Your account ID. | 0x0000053a |
2 | from | address | 20 | Your address. | 0x026a25efbcefb2e481d005e4f00ccced0af511ff |
3 | to | address | 20 | The pair's address. | 0xaa45c964e21eafb38574e9d000adbaf85acfbb80 |
4 | tokenIn | number | 2 | The ID of the token you want to swap in. | 0x000a |
5 | amountIn | string | 5 | The amount you want to swap in. | 0x94efe63009 |
6 | tokenOut | number | 2 | The ID of the token you want to swap out. | 0x0000 |
7 | amountOutMin | string | 5 | The minimum amount you want to swap out. | 0x25004d47c6 |
8 | feeToken | number | 1 | The ID of fee token. | 0x0a |
9 | fee | string | 2 | ​ | 0x7d0d |
10 | chainId | number | 1 | 11 for mainnet, 128 for ropsten. | 0x0b |
11 | nonce | number | 4 | Your current nonce. | 0x00000003 |
- | signature | object | ​ | Contains your pubKey and signature. | ​ |
Full Bytes Example
0x0b0000053a026a25efbcefb2e481d005e4f00ccced0af511ffaa45c964e21eafb38574e9d000adbaf85acfbb80000a94efe63009000025004d47c60a7d0d0b00000003
Signed Transaction Example
{
"type": "Swap",
"accountId": 1338,
"from": "0x026A25EfbcEFb2e481d005E4F00Ccced0AF511FF",
"to": "0xaa45c964e21eafb38574e9d000adbaf85acfbb80",
"tokenIn": 10,
"tokenOut": 0,
"amountIn": "19990000000000000000",
"amountOutMin": "4966214206000000",
"feeToken": 10,
"fee": "10000000000000000",
"chainId": 11,
"nonce": 3,
"signature": {
"pubKey": "110ffd569daaee30068fc3c85922d1237f63a41d4749d464b883131e92369204",
"signature": "3c6c2059ab0e929ed18d6ad4fbbf1cddce0e84b0cb9537069456b16cd01f33a2bc5391f8f7e1b9ae8fdff4c5d05856709e6bfd0e9200f5293386cf1aa6b39c00"
}
}
ETH Signature
Message Template
Message Example
Signature
Swap {readableAmontIn} {tokenInSymbol}
Minimum: {readableAmontOutMin} {tokenOutSymbol}
To: {pairAddress}
ChainId {chainId}
Nonce: {nonce}
Fee: {readableFee} {feeTokenSymbol}
Account Id: {accountId}
Swap 19.99 ZKS
Minimum: 0.004966214206 ETH
To: 0xaa45c964e21eafb38574e9d000adbaf85acfbb80
Chain Id: 11
Nonce: 3
Fee: 0.01 ZKS
Account Id: 1338
{
"type": "EthereumSignature",
"signature": "0x66ca505f09e2dbd2aaaa809cac3ec7085ea7831ec58c695566190588a2ced45c0d7e1c235840dd3f547d54ad87e6740bb3d299a89d36460b9eb1e56b25456ef41b"
}
Transaction Fields
Bytes Order | Field | Type | Bytes Length | Comment | Bytes Example |
0 | type | string | 1 | AddLiquidity | 0x09 |
1 | accountId | number | 4 | Your account ID. | 0x0000053a |
2 | from | address | 20 | Your address. | 0x026a25efbcefb2e481d005e4f00ccced0af511ff |
3 | to | address | 20 | The pair's address. | 0xaa45c964e21eafb38574e9d000adbaf85acfbb80 |
4 | tokenA | number | 2 | The ID of token A. | 0x0000 |
5 | amountADesired | number | 5 | The amount of token A you want to add to the pair. | 0xc2cf6f3245 |
6 | amountAMin | string | 5 | The minimum amount of Token A you want to add to the pair. | 0xb911dcd625 |
7 | tokenB | number | 2 | The ID of the token B. | 0x000a |
8 | amountBDesired | string | 5 | The amount of token B you want to add to the pair. | 0x4a817c8009 |
9 | amountBMin | string | 5 | The minimum amount of Token B you want to add to the pair. | 0x46c7cfe009 |
10 | tokenLiquidity | number | 2 | The pair ID. | 0x4002 |
11 | feeToken | number | 1 | The ID of fee token. | 0x0a |
12 | fee | string | 2 | ​ | 0x0000 |
13 | chainId | number | 1 | 11 for mainnet, 128 for ropsten. | 0x0b |
14 | nonce | number | 4 | Your current nonce. | 0x00000004 |
- | signature | object | ​ | Contains your pubKey and signature. | ​ |
Full Bytes Example
0x090000053a026a25efbcefb2e481d005e4f00ccced0af511ffaa45c964e21eafb38574e9d000adbaf85acfbb800000c2cf6f3245b911dcd625000a4a817c800946c7cfe00940020a00000b00000004
Signed Transaction Example
{
"type": "AddLiquidity",
"accountId": 1338,
"from": "0x026A25EfbcEFb2e481d005E4F00Ccced0AF511FF",
"to": "0xaa45c964e21eafb38574e9d000adbaf85acfbb80",
"tokenA": 0,
"tokenB": 10,
"tokenLiquidity": 16386,
"amountADesired": "2614699457800000",
"amountBDesired": "10000000000000000000",
"amountAMin": "2483964484900000",
"amountBMin": "9500000000000000000",
"feeToken": 10,
"fee": "0",
"chainId": 11,
"nonce": 4,
"signature": {
"pubKey": "110ffd569daaee30068fc3c85922d1237f63a41d4749d464b883131e92369204",
"signature": "3506a865b8a0871b706a620abbf7978760f76670c2d563f059d217890349988dd7a37d1cea3f67d5ca691453dd45d282141acac3f4dafb9f7a44b1dda3e0ca00"
}
}
ETH Signature
Message Template
Message Example
Signature
AddLiquidity {pairSymbol}
Desired: {readableAmontA} {tokenASymbol} {readableAmontB} {tokenBSymbol}
Minimum: {readableAmontAMin} {tokenASymbol} {readableAmontBMin} {tokenBSymbol}
To: {pairAddress}
ChainId {chainId}
Nonce: {nonce}
Fee: {readableFee} {feeTokenSymbol}
Account Id: {accountId}
AddLiquidity liquidity_0_10
Desired: 0.0026146994578 ETH 10.0 ZKS
Minimum: 0.0024839644849 ETH 9.5 ZKS
To: 0xaa45c964e21eafb38574e9d000adbaf85acfbb80
Chain Id: 11
Nonce: 4
Fee: 0.0 ZKS
Account Id: 1338
{
"type": "EthereumSignature",
"signature": "0x20c1c26e8f678220189f0a4a444e1686e969faa536a17abc1a30a113d6e4bfc12aa88a2075693857ea410f439d28467b01666bcb01d1b6bb7b8ce3641bd6daea1b"
}
Transaction Fields
Bytes Order | Field |