Questions tagged [transfer]
The transfer tag has no usage guidance.
224
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Why does Uniswap V2 use `_safeTransfer` to transfer tokens?
I'm looking into Uniswap V2 code and found that it uses _safeTransfer function to transfer ERC20 tokens in the Pair contract.
function _safeTransfer(address token, address to, uint value) private {...
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1
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54
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I didnt recieve ETH transferred from my coinbase wallet
I've made 2 withdrawals from my coinbase account to transfer my ETH coins to Bybit wallet.
Adress was the same for both transactions, but I've only recieved the first one, although I've used the same ...
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0
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100
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I am unable to transfer an ERC721 token that is owned by the wallet calling the function to the contract address the function belongs to
This is the start of a contract i'm writing, to enable two parties to trade ERC721 tokens via an escrow service.
The first step in the contract is that the trade initiator will deposit a token to the ...
3
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2
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754
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Why does SafeERC20 assume that the token's transfer and transferFrom return value is optional?
In openZeppelin's SafeERC20, the functions safeTransfer and safeTransferFrom call an internal function called _callOptionalReturn, which makes a low-level call to the token's transfer and transferFrom ...
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213
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How to send tokens to a wallet without exposing your Private Key (ethers.js)?
Intro: I am trying to create a web app where I can send some tokens from my personal account to another. I found out a possible way to achieve my goal using ethers.js in the following way:
// connect ...
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1
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116
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0
votes
1
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85
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Withdrawn ETH gets sent as internal transaction to black hole address
I'm trying to withdraw from this contract after funding it. After funding it, i checked the balance on goerli etherscan and there was goerliETH in it that i sent but i noticed that once i called ...
1
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1
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62
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how can i check hashcode and th amount
I'm new in Solidity, therefore if I have a wrong concept of anything kindly do explain.
I'm working for a personal escrow smart contract that should include these functions:
1- function deposit from ...
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1
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36
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How can I know wether a token can be transfered before aping in?
Other than some speficif tools (tokensniffer, honeypot, poocoin...) and project-related websites, how can I spot in a smart contract whether a token has any restriction (lock-up period, volume etc...) ...
1
vote
1
answer
67
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Cannot sell more than 1% of a token on a single transaction (BSC)
I bought this token 0x096901cE2C5501eAE23AF2D3F6e465dE98BFc645 but it seems that I cannot sell more than 1% of it on a single transaction while a lot of adresses performed bigger transactions. I am ...
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313
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Possible to send ether to another smart contract without function call?
I've created a contract, let's call it Contract A that mints an NFT when it receives .001 Ether.
This is the receive() function in Contract A:
receive() external payable {
require(
...
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2
answers
348
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transfer/deposit ether on contract fails
I am trying to deposit Ether on a smart contract. Looking at the documentation
my approach first looked like this:
// SPDX-License-Identifier: MIT
pragma solidity ^0.0.8;
contract SendEther {
...
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2
votes
1
answer
82
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Solidity Clones Contracts: How to save deployer as a storage variable which can be called in created clones?
I am using the OpenZeppelin Clones Library so that users of my dapp can create clones of my implementation contract. My dapp will be following the EIP-1167 standard.
For functionality, I will need to ...
- 110
1
vote
1
answer
36
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modifiers overriding simple question with inheritance
just wanting to be sure of this. If I have a contract that inherits from another contract and overrides a function of that contract with NonReentrant modifier on it. Will that NonReentrant modifier ...
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2
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1k
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Front End: Transfer (send) your NFTs (ERC-721) using Ethers.js or Wagmi.sh
I'm a front-end dev getting my feet wet in the crypto nft space.
I built a simple site for displaying all the NFTs in your wallet. Users can connect to the page using Rainbowkit (built on top of WAGMI,...
- 165
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0
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how to fix "ERC20: insufficient allowance" error? [duplicate]
I wrote a very simple contract to use the erc20 functions in another contract and the first thing I tried was transferFrom function, which works perfectly when I'm sending tokens from msg.sender(which ...
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391
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How is transferring to payable(msg.sender) costing less gas than transferring to an address?
Consider the contract:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
contract Test {
address payable public owner;
constructor() {
owner = payable(msg.sender);
}
...
- 978
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1
answer
46
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How can I provide a user with an unsigned transaction that, when signed, sends their ether/ERC-20 tokens to another address?
I would like to create a dapp that provides an invoice like work flow. For example: Alice would like to buy 1 apple from Bob for 2DAI. How can Bob programmatically provide Alice a way to send the 2DAI?...
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1
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26
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EIP4626 Vault Deposit "SafeERC20: low-level call failed"
I am trying to write a foundry script that deposits the asset token into a newly deployed EIP4626 Yearn vault. However, when I try to call the EIP4626 "deposit(uint256)" function on the ...
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96
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How to differentiate between ERC1155 fungible token transfers and non fungible token transfers
I am new to erc-1155. I am trying to track erc-1155 NFT transfers and mints by suscribing to the TrasferSingle and TransferBatch events. However I am not sure how to differentiate between fungible ...
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39
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transfer wbnb from contract to metamask
i transferred wbnb from my deployed contract to metamask using python. The transaction was not executed. However, when checking later the wbnb balance of my contract was 0, my wbnb was stolen. i have ...
1
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1
answer
281
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How is this scam code transferring tokens to the unspecified wallet within?
Below is the exact solidity code that the scammer were manipulating people to run by themselves. I checked that there is no wallet address specified within the code but this code will transfer the ...
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176
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How i can send my Ethereum from kovan test network to Ethereum main network
I have Ethereum in metamask which is in kovan test network so now I want to withdraw them so I want send Ethereum in Ethereum main network so I send to any crypto application
0
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1
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146
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transaction fail after calling transfer to the contract itself
I have this line in some function in an ERC721 contract:
IERC20 instance = IERC20(token_address);
instance.transfer(address(this),1);
And when deploying the contract I make sure the caller of the ...
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1
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15
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How to ensure the security of computation and transmition on Smart Contracts?
Suppose there is a smart contract with a bidding function, and the bidder can send the bid price to the smart contract after encrypting it. When the auction is over, a trusted third party sends the ...
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757
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Why ether transfer sometimes use more that 21000 gas?
I noticed that some ether transfers use more that 21000 gas. Here is an example which transferring ether from an UOA to a contract used 21033 gas:
unusual transaction
While another transfer with same ...
1
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2
answers
284
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Is there any way to transfer ETH in a contract function just like transferFrom for ERC20 tokens?
I know that you can request an authorization and the transfer of ERC20 tokens from a contract user to another address with approval() and transferFrom().
But it here any equivalent to do the same for ...
2
votes
1
answer
620
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Fetch last 10 blocks using Alchemy Transfers API
could someone please elaborate on:
fromBlock: the starting time range we want to fetch NFT mints over (defaults to latest)
I tried to pass a block but its not working... I have also seen fromBlock&...
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406
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Cannot get deposit() working in simple wETH contract
I am trying to test the deposit() function of the WETH9 contract in Remix. I compiled and deployed a simplified WETH9 contract:
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.7.1;
contract ...
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3
answers
640
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Transfer all NFTs in a single transaction
I'm trying to develop a dApp where I need to be able to transfer all of a user's NFTs to another wallet.
As I see it, this can be accomplished by looping through each smart contract the user owns NFTs ...
0
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0
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97
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IERC20 safeTransfer sender issue
0
I need to transfer some amount of an especific token (100) when the "father"(TTDT01) token is used.It is some kind of tax on a "child" token (ttdttoken) when the "father&...
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2
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527
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Send ETH using ethersjs without private key
Most tutorials I googled need wallet's private key to send ETH, such as this. How can we send ETH without knowing the private key using ethersjs? So, that user can just call their MetaMask and send.
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Transfer all eth from a wallet to another wallet [duplicate]
Can I transfer the entire amount of eth of a wallet to another wallet?
0
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0
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16
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IERC20Upgradeable.transfer fails without error messages while direct function call works fine
I cant figure out why calling a function from web app fails while calling from Polygonscan works...
Does anyone know why?
I am trying to call the function with the same args and condition yet calling ...
0
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1
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197
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Transfer someone else's NFT asset with an approve
I got this NFT marketplace smart contract. Still at the proof of concept stage, so I got 2 options to go with, I was just wondering if someone tried, or has knowledge about it:
Here is the deal, I was ...
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is pull over push pattern recommended for erc20 withdrawal too?
I had a chance to read the pull over push pattern for transferring/withdrawing ethers, but i'm not sure if i need to apply this for erc20 transfers.
i.e.
function buy(uint256 _someId, uint256 _price)...
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execution reverted: "ERC20: insufficient allowance" on transfer method (not transferFrom)
I'm developing a Smart Contract that transfer tokens that are owned by the Smart Contract itself. The function to do that is pretty simple:
pragma solidity 0.8.1;
import "@openzeppelin/contracts/...
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21
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Creating / Tracking ERC20 Transfers on Chain
I am creating a contract where users can come and deposit a certain stable coin to the contract.
Let's say using these invested funds, the contract owner can use it and be given a certain interest for ...
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219
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Different gas amount for erc20 Transfer functions
I have used Transfer function for an erc20 in different contracts with the same codes. The point is here, in different times there was different gas while the function was the same. The input of the ...
0
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2
answers
81
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Funds stucked in smart contract
I have a question.
So there is a project named StarsLab that had it's mint live in the beginning of this year. They started first the WL sale. I wasn't WL but was able to mint so reported it to the ...
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371
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What are these 2 transactions with the same hash and different values?
I am browsing some erc20 transactions from a given ethereum address on the Etherscan API module account and action tokentx.
Example here :
Sometime I observe 2 consecutive identical result except ...
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can we transfer custom token from one contract function to another contract?
can we transfer custom token from one contract function to another contract ? I want to transfer some custom tokens to another contract whilst using a contract function. Is this possible ?
e.g:
...
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1
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39
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ERC20 TRANSFER function error error = false transaction [duplicate]
Want to use erc20 function transfer to transfer erc20
Made contract referring this video
https://youtu.be/-5j6Ho0Bkfk
function transfererc()payable public{
Token token = Token(address);
token....
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3
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1k
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Transfer ERC721 tokens in BULK to single address
I want to know what is the gas effective manner to code to transfer many (e.g 1000) ERC721 tokens to a single address.
I have tried the way below but I want something more efficient.
function ...
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2
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46
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How can I get my money back if I have made a transaction from my bank account to Metamask and cancelled it but my money if gone from the bank account?
I have made a transfer from my bank account to metamask. Minutes later, I cancelled the transaction. The next morning I saw that my money if gone from my bank account and the money is not in my ...
0
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1
answer
125
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Transfer function not changing custom token(ERC20) balance after successful transfer from transfer function?
Transfer function not changing custom token(ERC20) balance after successful transfer from transfer function ?
The transaction is successfully performed but the amount of custom token in my wallet does ...
0
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2
answers
887
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Is it possible to send testnet eth from one testnet network to another?
Is it possible to send testnet eth from one testnet network to another? Curious because ain't getting much testnet eth these days.
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Send msg.value to another address immediately
Is it possible to implement a payable function and transfer msg.value to another address immediately?
function purchase() payable public {
//transfer msg.value
}
I'm thinking this wouldn't work ...
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0
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40
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ERC721 transferring NFTs and currency
I have a contract that I want to use as an NFT marketplace. It extends ERC721URIStorage
contract NftMarketplace is ERC721URIStorage ...
In on function I use _transfer() to move an NFT from the seller ...
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19
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How can I transfer this ROI value inside RateOI function value to the contract itself and the contract Balance gets updated
contract RATE {
function contractBalance() public returns(uint){
return address(this).balance ;
// store = address(this).balance;
// console.log(store);
// store =...
