Openzeppelinpekerjaan

I've successfully created an ERC-20 token on the Ethereum network, utilizing the OpenZeppelin Contracts Wizard and the Remix IDE for its development. The token is live, but I'm encountering issues with its representation on Etherscan.io. Specifically, I'm facing challenges with the ABI details and updating the token's image on Etherscan. It seems there's a mismatch or an incorrect setup that's preventing these elements from being correctly recognized or displayed. I'm looking for an Ethereum and Etherscan expert who can: Quickly diagnose the issue with the ABI and token image update on Etherscan. Provide a detailed solution and assistance in implementing the necessary adjustments to resolve these issues. Advise on best practices for token manage...

I've successfully created an ERC-20 token on the Ethereum network, utilizing the OpenZeppelin Contracts Wizard and the Remix IDE for its development. The token is live, but I'm encountering issues with its representation on Etherscan.io. Specifically, I'm facing challenges with the ABI details and updating the token's image on Etherscan. It seems there's a mismatch or an incorrect setup that's preventing these elements from being correctly recognized or displayed. I'm looking for an Ethereum and Etherscan expert who can: Quickly diagnose the issue with the ABI and token image update on Etherscan. Provide a detailed solution and assistance in implementing the necessary adjustments to resolve these issues. Advise on best practices for token manage...

I am seeking a talented blockchain expert who can assist me with the creation of a contract that I can use for deploying ERC20 tokens on Remix. In order to keep project costs down, we can use the openzeppelin base contract and then just customize it by adding 3 distinct key functionalities. 1. **Tax Collection:** - The contract should be designed to collect taxes on buys and sells. - You must have the capacity to manually set taxes on transactions. Optional: - When taxes are cleared by the contract every sale, there is too much red on the chart. To minimize this, taxes should only be cashed in once every 5 sale transactions, 2. **Marketing Wallets:** - The contract must enable the creation of at least three marketing wallets. These wallets will be used f...

We have a openzepplin hardhat upgradable contract deployed using with the hardhat plugin. We are trying to deploy this on Polygon Mumbai (testnet) For testing purposes. we plan to use the fireblocks plugin to sign the transaction which needs us to manualy provide gas parameters via the proxy const gasBuffer = 20e8; = gasLimit: 4e6, //based on max gas per block maxFeePerGas: Number() + gasBuffer, maxPriorityFeePerGas: Number() + gasBuffer, the gas values are retrived from the network from the previous block for estimation.. Our transaction is consistently always dropped. I am looking for some one to guide us with the correct

I am looking for a developer who can help me wrap my ERC 20 token to ERC 777 ideally using OpenZeppelin. I am open to suggestions as I am not sure what custom features I may need. The ideal candidate should have experience with ERC 20 and ERC 777 token standards, as well as knowledge of OpenZeppelin level of standards.

Using openzeppelin on ethereum blockchain. Looking to be able to have owners sell fractional pieces of their real estate assets using smart contracts

We need a solidity expert to add feature to our smart contract before we deploy it to mainnet (currently MATIC), we need a feature that has capability to lazy mint (gas free mint) in our site. and we do also need to optimize our current contracts to reduce it's contract size. We are using ERC721 and openzeppelin library contract upgradable. You also need to discuss how you will plan this setup.

This task involves the following - 1. reading the attached contract 2. identifying the failure in the contract (allowance and approve part fails) 3. working out a solution using remix and the contract for USDC on Polygon (0x0FA8781a83...version 0.8.0 2. remix IDE - compiling contracts 3. ERC20 token logic - need to understand approve and allowance in an ERC20 contract 4. Metamask - need to understand how to approve txns 5. testing solidity code in remix 6. understanding how escrow works with buyers and sellers 7. understanding how addresses work in ethereum and solidity, including importing tokens into Metamask 8. understand OpenZeppelin standards No UI implementation is needed (just remix) but the final code needs to be in a state so it can be transferred later so that a UI can e...

We need a solidity expert to add feature to our smart contract before we deploy it to mainnet (currently MATIC), we need a feature that has capability to lazy mint (gas free mint) in our site. and we do also need to optimize our current contracts to reduce it's contract size. We are using ERC721 and openzeppelin library contract upgradable. You also need to discuss how you will plan this setup.

I want someone who can help me build Smart Contract for NFT minting in Ethereum network. I want to mint 10k NFTs to the network now. All the art collections are ready. If you've got a good experience with ERC-721 and openzeppelin library and IPFS, it's the job for you. Thanks.

We are hiring a Crowdfunding Smart Contract on BSC (Binance Smart Chain) and it's integration on the website. Example of base code: starter/blob/master/contracts/ Documentation:

I need someone who can help me make this code work. Visual Source Code + Solidity 0.8.13 + Truffle 4.6 + Openzeppelin 4.x + Contracts-Upgradeable. Details: ^^ for details.

...month. These are some of the topics we’d like to cover: - Blockchain - Key difference of blockchain apps - SwiftUi vs IiKit - Deep dive on crypto libraries (for developing on web3auth) You can have a look at some of our latest technical articles to get a sense of the type of articles we’d like for you to write: Thanks! ...

DO NOT JUST GIVE GENERIC RESPONSE - Please Answer the questions I'm looking to create Dynamic NFTs - that have multiple creators associated with them. These creators need to share royalties for both the original sale (i.e. when minted) and ALL subsequent sales (i.e. when people sell to each other on a marketplace). With that said I really need help with the multi-creator royalty split for all marketplace sales (I know the solidity contract can handle the royalty split on the initial sale/minting) Again, my main issue is finding a solution where I can have multiple creators/wallets share in the royalties of ALL subsequent (subsequent = all sales that happen between people/wallets on a marketplace) sales associated with the Dynamic NFTs. Therefore, I'm looking for either: ...

Deliverable is FILE - use OpenZeppelin imports ERC 721 - Must be able to make dynamic (i.e., I can change the URI Metadata) o Only my wallet can make the changes - Need a variable to hold a points balance o Since this is used as a loyalty card I need to add points based on what the user does in the physical world - Need a function that can add points and transfer points - Must be able to add wallets or another contract to handle the splitting of payments o Initial Sales o Secondary sales (Royalties) - I need a function that I can call that will get the TokenID

Deliverable is FILE - use OpenZeppelin imports ERC 721 - Must be able to make dynamic (i.e., I can change the URI Metadata) o Only my wallet can make the changes - Need a variable to hold a points balance o Since this is used as a loyalty card I need to add points based on what the user does in the physical world - Need a function that can add points and transfer points - Must be able to add wallets or another contract to handle the splitting of payments o Initial Sales o Secondary sales (Royalties) - I need a function that I can call that will get the TokenID

I need someone to create a ERC 1155 smart contract that mints 7000 nfts upon deployment. It needs to use solidity, openzeppelin and remix. No mnemonic phrase will be given, it needs to use web 3 injection. Please message and explain how you plan to accomplish this, thank you. NOTE: Collection and meta data has already been created and added to ipfs.

Cordial saludo buscamos desarrolladores de contratos inteligentes Blockchain Pruebas unitarias de contratos inteligentes, Integración de contratos inteligentes CON EXPERIENCIA con las siguientes habilidades: -Creación de tokens -ERC721A Contratos inteligentes NFT de contr...Integración de contratos inteligentes CON EXPERIENCIA con las siguientes habilidades: -Creación de tokens -ERC721A Contratos inteligentes NFT de contrato inteligente optimizado -en la red de Polygon, Solana, BSC -Nft en el sitio web inmutable de X -creación de marketplace -Nft con botón Mint y botón Connect Wallet -Contratos inteligentes personalizados -Integración de Web3 -Sitio web de acuñación -OpenZeppelin - contratos: ERC20 | ERC223 | ...

Cordial saludo buscamos desarrolladores de contratos inteligentes Blockchain Pruebas unitarias de contratos inteligentes, Integración de contratos inteligentes CON EXPERIENCIA con las siguientes habilidades: -Creación de tokens -ERC721A Contratos inteligentes NFT de co...Integración de contratos inteligentes CON EXPERIENCIA con las siguientes habilidades: -Creación de tokens -ERC721A Contratos inteligentes NFT de contrato inteligente optimizado -en la red de Polygon, Solana, BSC -Nft en el sitio web inmutable de X -creación de marketplace -Nft con botón Mint y botón Connect Wallet -Contratos inteligentes personalizados -Integración de Web3 -Sitio web de acuñación -OpenZeppelin - contratos: ERC20 | ERC223 | ER...

We need a solidity expert to add feature to our smart contract before we deploy it to mainnet, we need a feature that has capability to lazy mint (gas free mint) in our site. and we do also need to optimize our current contracts to reduce it's contract size. We are using ERC721 and openzeppelin library contract upgradable. You also need to discuss how you will plan this setup.

I am looking for a handful of developers that would participate in a group audit of a simple smart contract. It is identical to the erc20 open zeppelin. The idea is we can piggy back the actual openzeppelin audit by New Alchemy and have you submit your findings that the contracts are the same.

We need a fungible token smart contract with: And please try to use as base token and add feature on top of that. 1. Image 2. Royalties 3. Whitelisting (whitelisting the address on-chain) 4. Memo on txn

...challenges the status quo and champion agile working and continuous improvement Deliverables 2+ years of experience with Solidity or other smart contract language String knowledge of TypeScript (we use it to test smart contracts) Understanding of the Ethereum Virtual Machine Prior experience in deploying smart contract systems to the Ethereum mainnet Familiar with Web3 frameworks and tools such as OpenZeppelin (), Infura (), () is a plus Understanding of various DeFi protocols Experience in communicating with users, other technical teams, and product management to understand requirements, describe software product features, and technical designs Ability to derive the information from a research paper, whitepaper

Available now for 1 hr. I just have questions about the openzeppelin contract. Please have extensive experience in solidity and have launched mainnet token before, not just testnet. Thanks.

implementing a an RC20 token smart contract developing the basics functions and some other funcionality, specific functions eg. antibot. programming language required: Solidity, openzeppelin libraries.

Es un proyecto de un juego NFT en la red de binance smart chain, en el cual, la gente podra ganar dinero por medio de una inversion. Precisamos de: - Blockchain developers (experience in solidity, Erc721, Erc20, openzeppelin and upgradable contracts) que nos ayude en el desarrollo de los contratos inteligentes y sirva tambien como un mentor en el desarrollo del mismo.

Hello fellow developers, we are a group of professionals working on our disruptive NFT Project. We are looking for a website with the following capabilities: - Simple landing page with dynamic content, showcasing our art - Presale, whitelist, giveaway features - Smart Contract Deployment (With wh... - Public/Private Minting - Wallet Integration (Metamask) - Open Sea Integration - Random Token Mint - Dynamic Metadata URL ( Reveal NFT ) - Store on IPFS - Scalable, resilient website hosting (To handle the peak when the sale launches) We are all computer engineers, with average programming knowledge, but with only a basic knowledge of blockchain and NFT engine development (Solidity, OpenZeppelin etc.). Thank you all in advance for the help. Looking forward to working wi...

I recently launched a NFT collection at OpenSea through a Smart Contract following some tutorials, however the total number of NFTs were not published. Out of 3000 only 100 were uploaded. I did some research and you can modify using the OpenZeppelin Upgrades Plugins. I would like to update the Smart Contract to have the full collection.

I recently launched a collection of NFTs in OpenSea through a Smart Contract following some tutorials, however the total number of NFTs were not published. Out of 3000 only 100 were uploaded. I did some research and you can modify using the OpenZeppelin Upgrades Plugins. I would like to update the Smart Contract to have the full collection.

Looking for Hardhat developer with skills of Solidity, Hardhat and OpenZeppelin. Experience in remix is not required. You should be able to write smart contract and testing script. Summary of requirements Need testing script of IronChef. IronChef is folk of MiniChef in sushiswap. So you can start from testing script of MiniChef. I want you to understand the difference between Minichef and Ironchef and write testing script of IronChef. There is no testing script of Ironchef. Totally I want testing script of Ironchef

Looking for Hardhat developer with skills of Solidity, Hardhat and OpenZeppelin. Experience in remix is not required. You should be able to write smart contract and testing script. Summary of requirements Need testing script of IronChef. IronChef is folk of MiniChef in sushiswap. So you can start from testing script of MiniChef. I want you to understand the difference between Minichef and Ironchef and write testing script of IronChef. There is no testing script of Ironchef. Totally I want testing script of Ironchef

I recently launched a collection of NFTs in OpenSea through a Smart Contract following some tutorials, however the total number of NFTs were not published. Out of 3000 only 100 were uploaded. I did some research and you can modify using the OpenZeppelin Upgrades Plugins. I would like to update the Smart Contract to have the full collection.

Looking for Hardhat developer with skills of Solidity, Hardhat and OpenZeppelin. Experience in remix is not required. You should be able to write smart contract and testing script. Summary of requirements Need testing script of IronChef. IronChef is folk of MiniChef in sushiswap. So you can start from testing script of MiniChef. I want you to understand the difference between Minichef and Ironchef and write testing script of IronChef. There is no testing script of Ironchef. Totally I want testing script of Ironchef

...minus the tax function I can't make but I hope is very simple for a good programmer. I want the tax to be taken every time someone buys tokens from an exchange and when is making a payment // SPDX-License-Identifier: MIT pragma solidity ^0.8.2; import "@openzeppelin/contracts-upgradeable/token/ERC20/"; import "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/"; import "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/"; import "@openzeppelin/contracts-upgradeable/proxy/utils/"; contract TestNet is Initializable, ERC20Upgradeable, ERC20PermitUpgradeable, ERC20VotesUpgradeable { /// @custom:oz-upgrades-unsafe-allow constructor constructor() initializer {} function

Looking for Solidity developer with skills of Solidity, Hardhat and OpenZeppelin. Experience in remix is not required. You should be able to write smart contract and test script. Summary of requirements Take a look at this contract: I want to make a test script of this contract. There is no test script in this repository. This contract is quite similar to MiniChef of Sushiswap. Totally, I want to make a test script of IronChef. If you have experience in sushiswap, you can do this in couple of hours.

Looking for Solidity developer with skills of Hardhat and OpenZeppelin in Solidity. You should be able to write smart contract and test script. Don't apply if you don't have similar experience or previous work. Please apply with your brief note about your previous work of Smart Contract in DeFi project. Summary of requirements Take a look at this contract: I want to create a test script of this smart contract. There is no test script in this repository. This contract is quite similar to MiniChef of Sushiswap. If you

Looking for Solidity developer with skills of Hardhat and OpenZeppelin in Solidity. You should be able to write smart contract and test script. Don't apply if you don't have similar experience or previous work. Please apply with your brief note about your previous work of Smart Contract in DeFi project. Summary of requirements Take a look at this contract: I want to create a test script of this smart contract. There is no test script in this repository. This contract is quite similar to MiniChef of Sushiswap. If you

Looking for Solidity developer with skills of Hardhat and OpenZeppelin in Solidity. You should be able to write smart contract and test script. Don't apply if you don't have similar experience or previous work. Please apply with your brief note about your previous work of Smart Contract in DeFi project. Summary of requirements Take a look at this contract: I want to create a test script of this smart contract. There is no test script in this repository. This contract is quite similar to MiniChef of Sushiswap. If you

As the title say Create token locker for BEP-20 token vesting using openzeppelin libraries. We will provide a schedule for the token release dates. Contract should have the following properties 1. The owner should be able to unlock the locked tokens 2. The owner should be able to transfer ownership of the contract 3. Specified amount of tokens should be released to specified wallets once the vesting timings are met.

Looking for Solidity developer with skills of ERC20 Token and OpenZeppelin in Solidity. You are able to write smart contract with simple staking function. Don't apply if you don't have similar experience or previous work. Please apply with your brief note about your previous work of Staking Smart Contract.

Looking for Solidity developer with skills of ERC20 Token and OpenZeppelin You should use all openZeppelin. Smart contract should be - Mintable - Burnable - Ownable - Pausable - ERC20Votes - Roles: Pausable admin, Mint admin, Burn admin Also, I want test scripts by mocha. I've attached some files, you can use.

...which have reached Binance Launchpad. The best candidate must know how to create a Token contract with Solidity and Remix, based on various parameters provided by us, must have the competence to evaluate and secure the contract, know how to deploy it first on testnet and than on the mainnet and how to launch it successfully on Binance Launchpad. Certainly a solid knowledge of Solidity, Remix and OpenZeppelin is required. The candidate will NOT have to create the Token for us, nor will he have access to the source code of the same! Rather, he will have to play the role of GUIDE for our developers, knowing how to explain well every step that must be taken, from the creation of the contract to its distribution on the mainnet, but also knowing how to manage the Token in production, ...

Introducción: un contrato con 3 fases d...cantidad de tokens fungibles que se van a poner a la venta * Se debe poder actualizar el precio de preventa sólo por el owner * No se puede comprar antes de habilitar cada fase * Tras terminar las fases el owner debe ser capaz de retirar los tokens sobrantes y el acumulado de la preventa. (Dicha preventa será usada para futura liquidez en una dex) * El contrato debe de heredar de upgradable de openzeppelin * Versión de solidity mayor a 8 * El contrato debe aceptar busd (para el caso de bsc) cómo medio de pago. * Extra: realizar una cotización sin este feature y especificar cuánto podría subir de precio si además se incluye El pago con BNB (requiere poder consultar el precio de ...

Hello, we are looking for a developer to create an ERC721 NFT contract Using OpenZeppelin library. We only have 4 Images to mint. Rules: Minting fee: is in USDC Network: Polygon Each address can only mint (2) NFT. Sale Must have a Start date and End Date. And could only mint While sale is ongoing.. USDC sales will then be sent to our address. Unsold nfts Should be burned.

...ERC-721 contract must be able to integrate all items to our OpenSea collection using the Metadata we will provide. Store tokenID URL Metadata in IPFS system. Ability to connect Wallet on browser. Join our Discord server link. Description Rarity Index Roadmap FAQs Link to Twiter, Discord, Opensea Tokenomics Utility info Blockchain Network: Ethereum All baseline Solidity code must come from OpenZeppelin Nice to have is set up a Dutch crowd initial sale on OpenSea for our collection for presale. We will provide main graphics for website. Sample sites: h

...Contract - Refundable ICO where any tokens that are left unsold after the time expires return to deployers wallet - Token distribution and lockers for different Token amounts with an option to unfreeze from the owner of the contracts and the ability to transfer the ownership of each of the lockers if he chooses so. - The contract should be able to be verified on BSC scan - The contract should use openzeppelin libraries - Preferably built with truffle for easier deployment and verification from our end Once the contract is done by you we will deploy it on testnet and then hand it over for an audit to techrate, if there are any issues found you are obligated to fix them. No milestones will be released until an audit has been conducted. Code commenting for easier identification i...

...Contract - Refundable ICO where any tokens that are left unsold after the time expires return to deployers wallet - Token distribution and lockers for different Token amounts with an option to unfreeze from the owner of the contracts and the ability to transfer the ownership of each of the lockers if he chooses so. - The contract should be able to be verified on BSC - The contract should use openzeppelin libraries - Preferably built with truffle for easier deployment and verification from our end - Integration of smart contract functionality in our website so it can be interacted with via user friendly environment/interface Once the contract is done by you we will deploy it on testnet and then hand it over for an audit, if there are any issues found you are obligated to fix th...

I am looking for someone to develop an ERC20 token with some small extra functionality. I am looking for an ERC20 smart contract (this should implement the openzeppelin ), a presale smart contract, the logic of a presale website in React.js (no design needed), a basic Node.js script that interacts with the smart contract. I have a PDF outlining all of the requirements in more detail. Please let me know if this is something you might be interested in.

Hi Logan, I am looking for someone to develop an ERC20 token with some small extra functionality. I am looking for an ERC20 smart contract (this should implement the openzeppelin ), a presale smart contract, the logic of a presale website in React.js (no design needed), a basic Node.js script that interacts with the smart contract. I have a PDF outlining all of the requirements in more detail. Please let me know if this is something you might be interested in.

Hi Vahid D. I am looking for someone to develop an ERC20 token with some small extra functionality. I am looking for an ERC20 smart contract (this should implement the openzeppelin ), a presale smart contract, the logic of a presale website in React.js (no design needed), a basic Node.js script that interacts with the smart contract. I have a PDF outlining all of the requirements in more detail. Please let me know if this is something you might be interested in.