Questions tagged [transfer]

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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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Transfer Balance in wei not i

I have this contract which reads the balance , I'm in BNB test , so it reads the BNB balance and then send to another adress half of the balance. The contract executes ok but the balance is sent in ...
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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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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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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 ...
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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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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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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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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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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 ...
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to convert one token to another, is there something as simple and independent methods, or do we necessarily have to use a dex as a swap interface?

I use web3 with nodejs. To transfer the main network token, which we put in the transaction value. To transfer another token to another wallet, we use the smart contract transfer function of the same ...
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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 ...
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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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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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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 =...
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Can ERC-20 token transfers have re-entrancy?

I understand that re-entrance attack can happened when you send ETH, because of fallback() function. But in ERC20 transfer there is no call for fallback, so I wonder if there's a way to make re-...
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What are some APIs that write transactions to the blockchain?

Are there any APIs that write transactions to the blockchain? I am most interested in RESTful versions.
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Invalid amount in MetaMask app on iPhone

I am using Moralis for simple token transfer from one wallet to another. My code: And this works great on desktop (Chrome MetaMask plugin): But when I wanna use this on my phone - iPhone (MetaMask ...
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Contract not applying tax as expected in early sells

I need help with a tax loophole. This is a early sell tax within the first 24 hours of token purchase but when tokens are transferred to a new wallet taxes are not applied. or maybe extend time on ...
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erc20 transfer function not working

i am developing a locking smart-contract where user can add token address, amount and lock time. i imported erc20 standard from openzeplin but when i transfer erc20 tokens to my smartcontract is ...
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How many transferFrom function executions can be done in one transaction? (airdrop use case)

I'm developing a dApp, with an Smart Contract, to be able to send multiple tokens at once, in order to save gas (like https://cryptomultisender.com/). The tasks are pretty simple: Take an array of ...
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How to send ether from smart contract to a particular address

I initially transferred some ether into the smart contract when deployed and in one of the function I should be transferring ether to the address of the msg.sender. Help me out if you can!
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Why ERC721 does not have direct transfer function?

I was researching the ERC721 standard on Openzeppelin and I have noticed that there is not public or external "transfer" function. I see internal "_transfer" function, that is ...
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Trace back an ERC20 token back to its minter

I am creating an ERC20 token. Lets assume once I mint these tokens I transfer them to some buyers. Say, token 1 is minted and transferred to user 1. Again, from user 1 to user 2 and so on to user n. ...
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Solidity get event when NFT is sold on Opensea and distribute across token holders

I'm very new to solidity, blockchain and smart contracts and the whole crypto ecosystem and I can't get my head around how to approach this problem. I'm planning to publish a NFT collection on Opensea ...
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ERC20 how to transfer token from contract to an account?

This contract created token and has stored it in his own address (contract address). I want to implement a function that transfer token from this contract address to an account address. pragma ...
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10 ERC 20 Tokens (2018) Cannot be Accessed

0xa4f6D6484cCCEBf5Ea35159F0D387647b2a3c86A here is our gnosis safe multisig address. 10 panda earth tokens were sent to the address. it is an older contract and they do not show up on etherscan as ...
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transfer money without specifying the amount

I have a list of products, each product has a price. I would like to create a function that can be called by a user and automatically checks whether the user's balance has enough money to buy the ...
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Getting Fail with error 'TransferHelper: TRANSFER_FROM_FAILED' while trying to swap part of tokens during transfer

I have created ERC20 token and want to modify transfer function so that swaps part of transferring amount to another token. I'm using OpenZeppelin ERC20 contract. // SPDX-License-Identifier: MIT // ...
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payments ( pre set value) in solidity

I am developing a movie renting smart contract where the owner can add new movies, clients can search movies and pay for the movies they select. Adding and searching is working to my liking. The ...
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Send Ether from SC to EAO

I came across many blogs saying the defacto standard to send ether from one contract to another and why one is better than the other. However, what is the best practice for sending ether from contract ...
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Subscriptions - Recurring payments (Fiat to Crypto wallet)

I checked several platforms (BitPay, Stripe, Plaid etc..) but none seem to enable me to setup a recurring payment from fiat to a crypto wallet the same way you would do it on Netflix with your bank ...
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I can't implement the transfer function that calls the A contract through the B contract. who can help me

I want to call the function of contract A in my contract B. I call the balanceOf function to display the balance normally, but when I call the transfer function, it does display Note: The called ...
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Calling payable function will directly transfer eth?

It seems that calling a payable function will transfer eth directly even without explicitly calling transfer(). For example: contract Storage { receive() external payable {} // Fallback ...
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Why do I see outgoing ERC20 token transfers from a given address that had no incoming transfers before?

I am trying to compute the balance tokens for some addresses, by taking the sum of tokens in minus the sum of tokens out. This lead me to a weird observation. I'm finding that some addresses have sent ...
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_addr.transfer(amount) dependent on value in message

I am trying to write a simple smart contract that accepts a small constant fee of eth. I am using the _addr.transfer(fee) function and the 'fee' is set in the contract at time of construction. I am ...
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How to parse Ethereum transaction input and get token transfers (ERC20)?

I am parsing Ethereum transactions to get transfers of different (erc20) tokens in Java. I know how to parse transfer, transfer_from, approve function calls, but I have problems with mint and execute ...
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Is "approve" required only for transferring tokens? Not a native coin?

Speaking of Ethereum blockchain, or any other one compatible with it: Polygon, Avalanche and others: is calling the function approve(...) mandatory only, and only, when there's a token involved in ...
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Transferring ERC721 tokens with web3j using an operator

I've been struggling using web3j (the web 3 Java library, not JS) transferring ERC721 tokens from one user to another, using an operator. I get that we need to approve the operator from the user that ...
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Send ERC20 tokens(it is link) from an address to smart contract

I can not transfer ERC20 tokens from my address to the contract. But I can transfer from the contract to other addresses. my account(msg.sender) has 10 link(ERC20) tokens . and i want to send these ...
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How to retrieve Wrapped BNB tokens sent to Ethereum Smart contract instead of Binance Smart Contract address?

Need desperate help from experts here. I swapped my ETH coins to BNB first to buy some pre-ICO coins, but executed a contract in Ethereum network (accidentally forgot to create and transfer Binance ...
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How to restrict ownership of my ERC20 token & allow only whitelisted individuals to trade it on Uniswap

I'm building a Community Token for my community and would like to make it tradeable on Uniswap via a Liquidity Pool. For the time being, I want to only allow my community members to purchase that ...
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Why is the address.call function failing?

Im trying to run the following solidity-by-example on remix: // SPDX-License-Identifier: MIT pragma solidity ^0.8.10; contract Payable { // Payable address can receive Ether address payable public ...
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How to perform an action when receiving tokens in smart contract

So I have some custom Tokens in a smart contract and whenever I receive BUSD in the smart contract I want to be able to send some of the custom Tokens back to the user that paid through a button from ...
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Contract does not accept eth sent from another contract

Hi I try to send ETH from Sender contract to Receiver contract by calling sendPayment function. But I get an error. I know that the issue is the require statement in the fallback function because ...
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Transfer() method with Web3 I got error and didn't transfer

I tried to make a button on we3 when click on it, the transfer method should start after 5 minutes. when I click my button first of all metamask show me this when I click on try it anywhay this error ...
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Withdrawal method is just unwrapping BNB/ETH?

I have found an account on bscscan that first withdraws 100bnb: https://bscscan.com/tx/0x77d4222ecd7f9fc704a34245ef270bebb9b0ece368117fb841108be4dc30726f and then transfers it to another wallet: https:...
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