Payer can pay some tokens to the payee for the first updateAccount
fee when transferring, including ERC20 transfer and NFT transfer.
Set payPayeeUpdateAccount
as true in ERC20 transfer and NFT transfer can pay the payee updateAccount
fee.
1. Checking whether the payer can pay the payee updateAccount fee
Get the payee account info via api/v3/account .
If the response is account not found, or nonce is 0 and tags do not contain "FirstUpdateAccountPaid", the payer can pay the updateAccountFee
Below are some examples that the payer can pay the updateAccount fee for the payee
1.1 Account not found
Copy https://uat2.loopring.io//api/v3/account?owner=0x60d2D76ed6E07a9F46EEe7d444257148E08B7bbb
respone:
{"resultInfo":{"code":101002,"message":"account not found"}}
1.2 Account nonce is 0 and tag does not contain FirstUpdateAccountPaid
Copy https://uat2.loopring.io//api/v3/account?owner=0x1111111111111111111111111111111111111111
respone:
{
"accountId": 10500,
"owner": "0x1111111111111111111111111111111111111111",
"frozen": false,
"publicKey": {
"x": "",
"y": ""
},
"tags": "",
"nonce": 0,
"keyNonce": 0,
"keySeed": ""
}
2. ERC20 transfer
2.1 Get fee
GET api: api/v3/user/offchainFee
transfer: requestType is 15 (TRANSFER_AND_UPDATE_ACCOUNT)
Copy header:
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF
request:
https://uat2.loopring.io/api/v3/user/offchainFee?accountId=11329&requestType=15
response:
{
"gasPrice": "2194508101",
"fees": [{
"token": "ETH",
"fee": "1920000000000",
"discount": 1
}, {
"token": "LRC",
"fee": "4770000000000000",
"discount": 0.8
}, {
"token": "USDT",
"fee": "2190",
"discount": 0.8
}, {
"token": "DAI",
"fee": "2730000000000000",
"discount": 1
}]
}
2.2 get storageID
GET api: api/v3/storageId
Copy header:
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF
request:
https://uat2.loopring.io/api/v3/storageId?accountId=11329&sellTokenId=0
response:
{
"orderId": 0,
"offchainId": 1
}
2.3 submit transfer
POST api: api/v3/transfer
storageId: the response in get storageID
maxFee: the response in get fee
payeeId: set to 0 is ok
Copy https://uat2.loopring.io/api/v3/transfer
header:
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF
X-API-SIG = 0xf4f902bffcdc2e640efe8f86ef970b65bea4ad1312e8ab33b200852d87a0fd881a584e201b52d768f333eb39b084ccde42dfe110fb683b81319837c6e92fa2691c03
request:
{
"ecdsaSignature": "0x09975137d489dcc8616b90b3ba4ea81b8f2eb6d93324255f38f077bee11b568960997054b31ac6b33f4609ebed72fa85808b8928ce6be42aa98d83da938859ad1c03",
"eddsaSignature": "0x14e9d6ba841634810ef8c893446eae514ef0e7443ec2db9ca6d4347eb82f586c196d9dabb3f72afb2ff1e8580ce35e6674dbcc42ed40cd908846e8aef009b75b0577e7a9c0e107ad3dfa4bd180b720a19be6e56fe64206624a531d16ea909b90",
"exchange": "0x2e76EBd1c7c0C8e7c2B875b6d505a260C525d25e",
"hashApproved": "0x1876c9f920fa78a91a56755d845c33964111d6f932767cf71f47efd87ef176a8",
"maxFee": {
"volume": "2190",
"tokenId": 2
},
"memo": "",
"payPayeeUpdateAccount": true,
"payeeAddr": "0xbb6924b24ba5c6ece81f056cf54e5d720846c188",
"payeeId": 0,
"payerAddr": "0x53f879debad6d97371bfd45875a2ec689d6af798",
"payerId": 11554,
"storageId": 17,
"token": {
"volume": "1000000",
"tokenId": 2
},
"validUntil": 1646747756
}
response:
{
"hash": "0x099301b1acb2634f1ea3f15e14ab078a054a1dee69c60b2f60ce7350eccd217b",
"status": "processing",
"isIdempotent": false
}
3. NFT transfer
3.1 Get fee
GET api: api/v3/user/nft/offchainFee
transfer: requestType is 19
Copy header:
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF
request:
https://uat2.loopring.io/api/v3/user/nft/offchainFee?accountId=11329&requestType=19&tokenSymbol=0x0000000000000000000000000000000000000000&amount=2000000000000
response:
{
"gasPrice": "1500000007",
"fees": [{
"token": "ETH",
"fee": "25100000000000",
"discount": 1
}, {
"token": "LRC",
"fee": "146800000000000000",
"discount": 1
}, {
"token": "USDT",
"fee": "105300",
"discount": 1
}, {
"token": "DAI",
"fee": "105300000000000000",
"discount": 1
}]
}
3.2 get storageID
GET api: api/v3/storageId
Copy header:
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF
request:
https://uat2.loopring.io/api/v3/storageId?accountId=11329&sellTokenId=0
response:
{
"orderId": 0,
"offchainId": 1
}
3.3 submit nft transfer
POST api: api/v3/nft/transfer
Copy request:
{
exchange: '0x2e76EBd1c7c0C8e7c2B875b6d505a260C525d25e',
fromAccountId: 11120,
fromAddress: '0x25B51D4c01c974f8f725be5c8ca5ccF5537f3e85',
toAccountId: 0,
toAddress: '0x35405E1349658BcA12810d0f879Bf6c5d89B512C',
token: {
tokenId: 32773,
nftData: '0x012b2fe4dd01019bbe456379ca4c0c174064f7fa321d42ef9373cd58dda92fbc',
amount: '1'
},
maxFee: { tokenId: 0, amount: '25100000000000' },
storageId: 17,
validUntil: 1667396982,
payPayeeUpdateAccount: true
}
response:
{
hash: '0x1df910bc73f2e90d71fdcd8fc1301c70184c62d866cb2e56871db6d16af838f9',
raw_data: {
hash: '0x1df910bc73f2e90d71fdcd8fc1301c70184c62d866cb2e56871db6d16af838f9',
status: 'processing',
isIdempotent: false
}
}