Questions tagged [airdrop]

An airdrop is a distribution of a token or coin, usually for free, to numerous wallet addresses. Airdrops are primarily implemented as a way of gaining attention and new followers, resulting in a larger user-base and a wider disbursement of coins.

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Solidity contract - Best way to airdrop a single time a user

I've got this very simple Airdrop contract below: contract ERC20 { function transfer(address _to, uint256 _value)public returns(bool); function balanceOf(address tokenOwner)public view ...
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Bulk transfers ETH or token - gas price

If I make a bulk transfer with multi sender apps or an array in a smart contract or airdrop apps - will this be one time the gas price only?
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how can I query to find all NFT token holders?

For preparing an Airdop, for example, I want to find all owners of a specific NFT contract at a set date (today is OK, just actual hodlers, not all previous owners). In doing some digging most APIs ...
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Trying to give tokens the new users on my Dapp

pragma solidity ^0.8.0; contract Coin is ERC20{ mapping(address => uint256) private _balances; mapping(address => bool) private _airdrop; uint private _totalSupply; string ...
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Claim Airdrop doesn't add another claim reward value to existing value, the value will change but will add to existing reward

Source code link: https://github.com/BIMPFinance/ClaimAirdrop/blob/main/claimPrize.sol This contract send token to address/addresses, and the user will redeem the airdrop token of this contract ...
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119 views

Transaction has been reverted by the EVM, Error from Binance Smart Chain Airdrop Contract

I am creating a DAPP website for my Smart Chain token Airdrop, I have copied 1 running Smart Contract, compile it on remix and deploy on smart chain testnet. Below is the code of Smart Contract and ...
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1answer
111 views

How to register addresses for airdrop?

I am creating an NFT game and I want to create an airdrop for other token holders. I have the addresses of holders, it's more than 20 thousand addresses. Now my question is, how do I make the ...
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403 views

Creating multiple accounts in metamask automatically

Say I could travel back in time, and wanted to take advantage of the uniswap airdrop. Would it be possible to create multiple adresses on my metamask account through the web console of my pc, instead ...
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719 views

Airdrop without Gas Fees

I'm new to smart contracts. is it possible to credit ethereum addresses with ERC20 tokens? basically "write" the balance instead of airdropping them via transactions. asking because gas-fees ...
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150 views

ERC20 Contract transfer call failed multiple times, no idea why

I found this token that got airdropped on me a while ago, and I don't want it. It was valued at $18 or so. I decided to sell it, but the exchange had a minimum amount, so I simply bought more so I ...
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Please Help! I have an big airdrop to claim but lost my

I lost my metamask seed but i have the wallet address to that account that will be able to make the claim. Is there anyway possible to recover an account using the wallet address only? Can it be found ...
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1answer
398 views

Out of gas problem on contract call

Here ether scan links to failed transactions : last failed attempt : etherscan link others : etherscan link traced view of contract calls etherscan link (you may just change the tx hash on the URL to ...
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Feedback on Implementing Merkle Airdrop for Rug Pull Victims

Summary: Developed a smart contract that enables the GovernorDAO Community to un-rug the CBDAO Rug Pull victims by providing them with a Merkle Distribution Airdrop. Over 1/3 of an already-minted ...
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123 views

Difference between types of sale activities for tokens

I want to underatand whats the difference between a crowdsale, airdrop, ICO, ILO, ipo and presale. Are all these types of presale activities?
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Closed, Creating a method to airdrop ERC20 Token B to the holders of ERC20 Token A [closed]

I've been attempting some form of solidity code to automate the airdropping of Token B to the holders of Token A almost all day, but I still couldn't find much that works. How could I do this?
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Airdrop generated token to multi address by contract failed

Below is my operation steps: I create a token 0x260c4b1cd063599949b530454d22081b94c170ef whose owner is 0xAbA5862c54254750b2EFe8BEB72f528DAF73547F You can check this token's code by https://...
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Ethereum - Exporting Accounts/Balances from full node

I have a Ethereum full node that I will be using to take a snapshot for an airdrop for a project I am working on. The node is running and syncing. The issue currently is that there doesn't seem to ...
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Is it likely to receive more token airdrops to one of the original Ethereum addresses from the crowdsale?

Is it likely to receive more token airdrops to one of the original Ethereum addresses from the crowdsale? Hi there, I participated in the original Ethereum crowdsale and I used to store a certain ...
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60 views

What does this following entity exactly means in this PolyMath contract?

Here I've added code snippet which is I'm learning right now. The following terms/ entities/ variable are not understandable why exactly it means and why it is used. - Founder, Advisor, Bonus1/2/3, ...
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271 views

Will 'x.send(amount)' revert if 'x' is a contract with a fallback function which reverts?

I know that x.transfer(amount) reverts if either one of the following two scenarios takes place: There is not enough ether in the calling contract, i.e., amount > address(this).balance Variable x ...
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1answer
140 views

Burn the rest of the token after airdrop is complete

I have started to develop blockchain and learn solidity. I tried making a smart contract with the 200M supply, the creator only held 50M of the total supply and the rest was in the smart contract for ...
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Which ways of distribution of Tokens are being used beside ICO/STO?

Assume, I've created my own ERC-20 Token and published it to the Ethereum Blockchain. By doing so I also got access to all of the initially created tokens. If I'd like to distribute them, the only ...
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313 views

Supply amount exceed total supply! Why the quantity supply shown 1.00 E+59

the quantity amount over the total supply, shown 1E +59 Airdrop solidity code maybe got something problem, does someone had idea?? Can't check for token Holder, "Sorry, We Are Unable To Generate The ...
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How to save and retrieve the investors address in a crowdsale contract

I am writing a ICO code which should have the following functionalities To save the address of every investor and To retrieve all the investors address and the amount invested Question What is the ...
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106 views

Token transfer is not working

I am trying to transfer a token from a token contract. the control reaches till the point where I have the transfer statement later it fails. I do not understand why it is failing. I made sure the ...
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Any quick, easy ways to convert ERC-20 tokens?

Are there any quick ways to convert my Airdrop ERC-20 tokens from various old ETH wallets to ETH/BTC...? Looks like I've got a few hundred $ kicking around in old Airdrop tokens. I've seen a few ...
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Is there a more elegant way to do an aggressive multi-send?

I understand there are many approaches to do multisend but for me timing is a priority and I do not want to stop the transaction if a address.send fails. function multiSend() internal isAdmin { ...
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246 views

What should be optimal gas limit and gas price for 80 addresses airdrop?

This is my airdrop function: mapping (address => bool) public airdrops; function airdropTokens(address[] _recipient, uint256[] _tokens) public onlyOwner{ uint airdropped; for(uint256 i = 0; i< ...
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152 views

"Error: gas required exceeds allowance or always failing transaction" for simple AirDropper contract

I try to use simple AirDrop contract taken from https://github.com/omisego/airdrop/blob/master/contracts/Airdropper.sol - https://gist.github.com/Gim6626/083d556e0a41da5172de0c49ffd64577 . It ...
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4k views

ERC20 transfer reverts when called from one smart contract

I have an ERC20 token MyToken which seems to be working fine. I have another smart contract AirDrop, that is supposed to distribute MyToken. The sendTokens() method takes an array of addresses, and an ...
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Is http://zrx.plus a legit site to claim my 0x exchange tokens? [closed]

Is http://zrx.plus/ a legit site to claim my 0x coins? What are some precautions to have before claiming my air drop?
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Gas Estimation Failed for Airdrop for sending Tokens to Multiple Addresses using Remix

I have deployed a Crowdsale contract and now I need to send my Tokens to a list of addresses using remix and injected web3. I am using below code for Airdrop but when I send tokens to multiple ...
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327 views

How to send multiple ERC20 tokens

There are about 2k ethereum addresses I'm supposed to send my ERC20 token to. Doing this manually is a no no. I've searched to and fro to no but most of the tutorials are not detailed enough. So can ...
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1answer
348 views

Solidity airdrop exiting with REVERT opcode

I work on solidity airdrop contract. I tested the contract in ropsten testnet https://ropsten.etherscan.io/address/0xc91cc586a0f4b08df677b0b0ef3e1e96cea9a1b2#tokentxns Our goal is working multisend ...
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Who has access to ethereum 0x0000000000000000000000000000000000000000 address?

Who own ethereum 0x0000000000000000000000000000000000000000 address? I have received some 0Chain token from this address. I know this is a genesis address but who can access it?
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141 views

Do I need different ethereum adresses for every airdrop?

I want to register in some airdrops. I need to type same ethereum address in all airdrops or I need to create new account in metamask so I have different ethereum address for every airdrop ?
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280 views

Airdrop Gas Considerations

Let's say I want to airdrop various amounts of an ERC20 token to 10,000 different wallets. How/Why is a smart contract that handles the airdrop in batches (as described here) is cheaper in gas than ...
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600 views

Thoughts about implementing masternodes in a ERC20 Token

I am developing a cryptocurrency on top of ethereum blockchain that will have some sort of rewarding features for the large hodlers of the coin. I know two ways of doing that: Airdrop - like Pundi X ...
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4k views

how to implement an airdrop function inside a smart contract

I have a Erc20 token X and an Smart Contract A Smart Contract A contains 1000 X Tokens. How can an User get an defined amount of X Tokens from this Smart Contract? (something like an Airdrop) So ...
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164 views

Airdrop function executing but balances not updating

I created the following code for token generation and airdrop. The token generation is working. I am able to execute the Drop() function (and got confirmations of contract execution) but the token ...
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2answers
168 views

Airdrop token code not working

I have this code to send a multi-transaction of token in a short airdrop pragma solidity ^0.4.18; contract ERC20 { function transfer(address _recipient, uint256 _value) public returns (bool ...
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1answer
121 views

Spoon vs fork vs airdrop

Can someone explain the exact differences between the three? I'm most familiar with the fork, where the rules of generating blocks change creating a fork where miners can choose to follow the old ...
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3answers
2k views

HOW TO AIRDROP TOKENS SUCCESSFULLY

Hi guys quick and simple question.... i have the script for airdropping tokens, all i need is to know what and how to input these value on the drop section of remix script:token,recipient,values. ...
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1answer
214 views

airdrop functionality

what is the functionality of use of "Airdrop" in smart contract, have seen many where result pop-up "adding airdrop in already deployed smart contract" as far as my knowledge once smart contract is ...
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142 views

my solidity airdrop contract don't works

I works in a last 3 days on solidity airdrop smart contract , i tried it on rinkeby but don't work. i try several time but fail and i dont know why. Here my last fail TX A total of 86 steps found. ...
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2k views

What is a Erc20 (UBT) token I received in my wallet according to EtherScan?

I look in my EtherScan and it says that 5 days ago and 10 in value I received a token called Erc20(UBT) and I click on it, it's a Universal Bonus Token that came from an address = 0x00000000000... ...
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2k views

Script to Airdrop ERC-20 token [duplicate]

I've created a token on testnet out of curiosity. Token was created I'm able to transfer token to other testnet wallet I created. I'm interest to run an airdrop to all of this testnet wallet but I'm ...
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1answer
1k views

Parsing Ethereum Blockchain into SQL

We're looking to do an airdrop to all Ethereum wallets with a balance of .1 ETH or greater, but are having a hard time capturing the balances of every wallet in a quick fashion. We're trying to use ...
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1answer
796 views

Airdrop cost optimization

I am planning an airdrop of an ERC20 mintable token created through a crowdsale contract based on Open Zeppelin. Now what I am wondering, is what would be the cost effective way of adding an airdrop ...
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756 views

Do we have an API for airdrop

I am creating an news app which will show the ICO and Airdrop details. Is there is any API for Airdrop news ?