Questions tagged [erc-20]
The ERC20 Token Standard is a set of 8 functions to be included (in an agreed upon language) in a smart token contract in order to enable interoperability across multiple interfaces and dapps. These functions relate to (1) how tokens can be transferred (2) how to access data about the token, and (3) how to format key events like transfers and approvals. ERC stands for Ethereum Request for Comments.
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Is there a performance penalty towards creating the maximum number of tokens with ERC-20 etc?
I saw this link:
Max possible ERC20 Tokens allowed with 18 decimals?
Is there a performance penalty for creating so many tokens? Obviously the number of storage capacity needed for mining will be ...
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How to make transactions without metamask
My account has enough ether to make a transaction. How do i call a payable function that is written in solidity? I tried by calling like this
const Web3 = require('web3');
const HDWalletProvider ...
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What is the best way of token redemption by user?
Background
RETN Deals offers discount coupons from global brands and in addition, offers generous cashback in Cryptocurrency (RETN). The web application automatically tracks consumer purchases at ...
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createPayment method from solidity contract: This transaction is excepted to fail
I'm trying to implement and use the Solidity claimPayment function so my users(client) can claim a defined amount of tokens on my website (i want them to pay the fees and my server decide how much ...
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Is ERC20 Token Contracts the Only Way to Create Custom Tokens?
Is the only way to create your own tokens/cryptocurrency on Ethereum by deploying a Smart Contract following the ERC20 standard?
After deploying the token contract, is the only way to transfer the ...
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My Token erc20 does not issue tokens
Here is my code:
pragma solidity ^0.5.0;
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
...
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How to call a function from deployed contract to another contract? [duplicate]
I created a basic ERC20 token contract and deployed in rinkeby testnet and I got the contract address now I want to call transfer() function from this deployed contract to another contract without ...
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Uniswap Price Feed.- Get price of a Token in a Solidity contract
I am looking to retrieve the current price of a token from Uniswap. I have successfully used the ChainLink oracle api to get the price of BTC/USD, but I want to now integrate Uniswap price feeds.
I ...
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create ERC-20 token from a contract function
I would like to do a function create contract with ERC-20 interface.
But I have a few problems.
If anyone help me I’ll be appreciated.
Here’s the code :
pragma solidity ^0.5.0;
import 'https://...
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