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    102 jobs found, pricing in USD
    NFT monitoring 6 days left

    Looking for help building a script that: 1) Monitoring & ranking of NFT collection - constant monitor of smart contract for changes regarding metadata (setBaseURI, etc) - check whole collection once metadata available - rank items (rarity tools algorithm or something similar) - list items with marketplaces links (list per any order specified by the user) - allow filtering for buy only option in marketplaces and limit of eth to be paid. 2) Actions - option to buy certain item based on filters (rarity, gas, eth price) The whole idea is to monitor one (or more contracts) for metadata update and once the metadata is available, then rank each NFT based on its rarity and provide the ability to buy it based on certain inputs, or manually at a later stage. You would help me with the framew...

    $652 (Avg Bid)
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    We need a blockchain developer to develop a blockchain wallet for us. let me know if you can we can discuss more

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    27 bids

    We are startup company and got couple of questions on Blockchain and how we can get started to launch our project. This is going to be CALL based project , so the conversations will take place on google meet This is an hourly job and probably more collaboration in future. if you are expert in Blockchain , Smart Contarct and cryptocurreny please do apply. Your knowledge would need to be around : Blockchain person validation. Smart Contract detailing. denetralization. PLEASE ONLY APPLY IF YOU CAN SPEAK ENGLISH VERY WELL ON A CALL

    $45 / hr (Avg Bid)
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    Hello, In order to trade more efficiently, i need a GUI which is connected to my wallet and sells my holdings/tokens in different ways. There should be an autosell if price drops x% (f.e. 50%) from my entry price or if it rises 400% it should sell 1/3 of all ABC tokens.

    $411 (Avg Bid)
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    Solidity Expert 6 days left
    VERIFIED

    I am looking for smart contract developer. you have to master solidity and contract.

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    41 bids

    Need ecosystem as farmers world I have 3 tokens

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    I am looking for a person who can help on launching the coin on pinksale and pancakeswap.

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    Hello! We have a new project which is going to launch on different exchanges at the end of the year. Until then we need blockchain developer who can help us with our current smart contract (TRC-20). Best regards Chris Lemkemeier Utopia Community

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    Somos una startup tecnológica que ofrece una suite CRM y ERP basada en Blockchain. Buscamos un product owner conocedor de las tecnologías Blockchain y smart contracts para culminar la finalización del MVP.

    $16 / hr (Avg Bid)
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    Update smartcontract 6 days left
    VERIFIED

    Hello need update one smartcontract .. fastly expert only AND need developer for continúe work in my project

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    Looking for a blockchain expert who is familiar with Solidity, Meta Transaction, Polygon server and etc.. This is an urgent project and also an ongoing project. If you are the right person, please send me proposals. I will share more details via chat.

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    I need an blockchain expert who is very familiar with Solidity. This project is for only right candidate. This is urgent project and once you deliver the good result, you will work on ongoing project. Let's discuss more details via chat.

    $8 - $15 / hr
    Sealed
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    27 bids

    I'd like a robust Bep20 smart contract with taxes and burning capabilities.

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    Looking for someone who can build using React - for a NFT Minting project website. The website should support metamask and web 3, and should support the minting function directly from the website. We have already got arts and web design ready.

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    TOKEN FEATURES o Defi NFT Metaverse Project o Binance Smart Chain o There will be pre-sales on our own website o Whitelist will be made both for the sale on our site and for the ICO sale o %3 of total token amount will be sold on own website pre-sale (1 LASM = 0,035 USD) o ICO will be done on launchpads, IDO will be done PancakeSwap v2 o ICO price will be 1 LASM = 0,05 USD o Only 12% of total token amount will be on ICO sale o Tokens sold in ICO will remain locked for 3 months o 40% of total token amount will be locked for 2 years o NFT items will be minted on our own website. (metamask wallet connection) o Minted NFT items can be sold on the 3rd party NFT marketplace. Also NFT items can be bought and sold in the LasMeta marketplace o NFT Pre-sale will be done for 666 Whitelisted address a...

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    we need a bep20 smart contract, some issues need to be fixed then deployed code has to be well commented and clean for the contract. lets talk in chat for more info and discuss it solidity contract experts only with experience.

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    When people purchase my NFT they are rewarded my coin. Also when this happens a certain amount of our coin is burned. My coin is on the Binance smart chain while my NFT is on the Ethereum network.

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    That Task includes the following: Main (Landing) Page contains comprehensive, presentable information about SVET Platform's System, Vision, Team and Token (according to the SVET Platform Pitch Deck); New reviews and reports must appear on the Main Page as they are posted by its authors. Users might sort reviews and reports according to projects' platform, chronology, industry and ranking. There must be the functionality to algorithmically archive / retrieve old reports. The SVET Rating Page must allow for user-friendly experience of filling in reports & rating Forms. Ratings must be alternatively (depending on users' selection) presented in the Rating Table by their designators (letters or icons); On Users' individual page (to be made) there must be included a f...

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    SafeCharity -- 2 5 days left

    The first part of the project requires your team to write, compile, deploy a smart contract that assumes the basic role of a charitable organization (eg Non Profit Organizaition (NGO)). A charitable organization must be able to detect suspicious transactions and the suspects involved, as well as report them. 1. There are sets of Actors (donatee, donor & charitable organization). 2. How this system works: i. The needy people would upload their data on the portal connected to the Blockchain system ii. The community can access their data from the Blockchain and would be able to help them directly and safely. iii. Implementation of this system would help in providing help to needy people and will ensure transparency in the transactions. 3. The charitable organization (ie NGO) will perform ...

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    Good Evening! I am looking to have a business software; web—based-app created.

 Titled: Crypto Mining Payment Utility
 
 Proposal:
 This software will enable our crypto-mining-farm to automated the payout process for our clients machines and generating reports. 

 In the future, after we thoroughly test it, we would like to offer this software as a product for other crypto-mining-farms with our business model. 

 If you are interested; we are open to working out a {dev fee partnership} for the creation and maintenance upkeep on this software; the dive we will be taking into the web3 environment will not be stopping here. 

 Overview: The Software we are currently using to control our mining operation provides an Api that can provide necessary machine information (ie: Hashrate...

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    Want to launch some new NFTs. Need help with NFTs and setup on marketplace as well as personal site. Please give me an overview of what you think it will take to accomplish this, give me any relevant examples of past work, and try to estimate cost. (After asking any questions you might need!)

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    I need Wax wallet login page creation and some basic smart contracts. check this out for more details List of game-based NFT's the user has in his wallet, as shown in the frontend .This is ready. Only its creation on AtomicHub remains. Example of what we are trying to implement. I think this can be implemented faster than developing a NFT staking platform from ground. Atomichub gives wax as fees so the users will also get 50% fees share would be given to those who hold our Zombie Scientist Badge according to different rarities. To get us whitelisted which will require wax login page and smart contract for 50%fees being redistributed,Before 10/12/2021,the day our first sale occurs,To be completed. If you are interested in this, please bid with 'success'. Thanks.

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    Nft project 5 days left

    The Goal is to create a plataform and wallet with direct connection to a Blockchain network with cheap and fast transactions, that also enables to deposit directly into a built wallet system. Building and creating Nft Blockchain services for restaurants,bars and customers that don't know how to interact with this tech

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    IDO Platform on BSC network 5 days left
    VERIFIED

    We want to build a new IDO platform which includes; *Staking feature, rewarded with OUR token with %x APR *Investors stake OUR token and they have whitelisted for the IDO (able to participate IDO sale) if they staked the required amount of OUR token * Different allocations according to their stake amount of OUR token We need a full stack developer with the contract creation also. The platform will be on BSC network example:

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    Looking to hire an expert in all things blockchain. Preferred candidate will be part builder, part consultant. Our project will combine NFTs with real-world sporting event tickets (similar to eventbrite). One specific use-case already planned - looking for this candidate to guide decisions such as best chain to build on, timeline, etc.

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    Hello every one i need smart contract blockchain application below reff site :

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    Looking for a Solana Expert 5 days left
    VERIFIED

    Hello I have a built smart contract for staking NFTs on Solana. I am looking for a web3 & react expert for the smart contract. The candidate have to build frontend for staking page and connect smart contract in to frontend. Required skills: -Phantom Wallet knowledge -Solana/ -React Please bid if you are an expert. ***Don't waste time for bidding*** Please bid with "Solana Expert" Thank you

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    PLEASE READ FULLY BEFORE BIDDING This is for a NFT series of 10,000. Servicing the smart contract, backend, and front end of site. On ethereum blockchain. In need of a blockchain web developer who can build an NFT site with a similar front end to this: (With simple color changes. I'll provide the "llama replacements". No in need of a fancy illustrator. Also you'll need just a few extra buttons such as countdown timer and "connect your metamask") And I'd like the backend like this: *Ability to launch NFT for sale on site, including mint tickets ("early bird" option, sold as nft as well), and whitelisting. *Ability to mint the NFTs with rules I request (ie: amount of royalties, auto load up on OpenSea upon launch, give the 10,000 images...

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    i need to fork (change old brand variable.) I need to modify a smart contract bep20 in solidy for disable the sell of token when the marketcap or price fall under 5% of the market cap or price and reactivated after the marketcap or price recovered the 5 %. example you start at 0$ and in hight 1$ the marketcap or price decrease for 5% so here the marketcap or price is 0,95$ at this marketcap or price the sell is disable you need to rebuy the dip until 1$ when we have recovered the 5% the sell is enable I need you for fix this problem.

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    Hi, all. I look forward to the freelancer who can build the imx smart contract and integration on our website. I already have website for integraion. You will build the smart contract for minting and implement the integration on current website. Please apply me if you can do the project. Cheers.

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    Looking for someone to help me start an Nft project from scratch. This will be the first project I have started for NFTs, and need someone with experience in the field. I will post a separate post for blockchain developers as well.

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    We are looking to bring on a developer for more than this initial project. Must be experienced in Rust, have past NFT smart contract experience, with examples of work. We are launching an access token to a community. There will be additional layers and releases. One time fee + profit share is available to the developer we choose to bring in.

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    create an nft auction page 4 days left
    VERIFIED

    Hello, I'm looking for a solidity developer to create a simple nft auction page - no need of minting or anything; functions needed; add any nft token id and contract address, add time duration, base price, price increment % for next bid. Cancel function of auction Bidding function NFT token approval function (for owners to make it available to put it for auction) no other functions are needed, just three page UI, display all auctions, display single auction, add token pages

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    Hello, We are working on a new NFT project with the sale of NFT visuals. We plan to drop our first collection ASAP, during December. We are currently working on our designs and our communication strategy. Our strategy will be to allow people to mint our wide collection directly from the website and this repeatedly for every drop For that reason, we need someone capable to technically implement a minting capability to our website. Are you familiar with this process ? Every Week we need people to come to our website to mint our NFT’s (5 different categories/1K NFT’s) Between every drop we will need to release 1NFT to auction (unlockable). Concretely it will works like this: 1st week: Whitelist of 1K NFT’s available for mint on our website 2nd week: 1 NFT available fo...

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    I need a professional smart contract developer for a project, I will be forward the project details as soon as you bid this project.

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    I want to develop click-to-earn game and it's basically going to be very similar to this game In this game you just click on "Mine", and it gives you a result. If you are expert in this field, please bid with 'crypto'. Only chat with expert here. Thanks.

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    NFT minting website 4 days left
    VERIFIED

    Hello, we are working on a new NFT project with the sale of NFT visuals. We plan to drop our first collection ASAP, during December. We are currently working on our designs and our communication strategy. Our strategy will be to allow people to mint our wide collection directly from the website and this repeatedly for every drop For that reason, we need someone capable to technically implement a minting capability to our website. Are you familiar with this process ? Every Week we need people to come to our website to mint our NFT’s (5 different categories/1K NFT’s) Between every drop we will need to release 1NFT to auction (unlockable). Concretely it will works like this: 1st week: Whitelist of 1K NFT’s available for mint on our website 2nd week: 1 NFT available for auct...

    $15 - $25 / hr
    Sealed
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    8 bids

    We are looking for someone with experience in web and/or smart contract development for an NFT project. - Web design and deployment for metamask wallet, NFT marketplace connection - Smart contract (ETH blockchain) for NFT uploading, staking etc. If you are interested, please feel free to get in touch to find out more.

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    Create a Solidity Contract 4 days left
    VERIFIED

    Create a solidity Contract - Should be able to disburse fund to survey takers after successfull completion of survey - Should be able to hold funds by survey creaters - refund left over money to Survey Creater after expiration of Survey - Should accept $amount as a parameter and # of users as a parameter - Divide $amount/#of users to know what exactly to distribute to each survey taker -payout using metamask and deposit using metamask -Integrate the contract with our survey taking application -> Only people 2 years of solidity experience apply to this -> Don't apply if you don't know solidity and MERN

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    I have two smartcontracts that I would like to interact with, however their interface is not public. Need someone who will play with them and then write me the interface.

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    Need a reliable developer to create crypto NFT, Smart contract with Solidity + validation.

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    Blockchain game developer 4 days left
    VERIFIED

    We are going to build a new blockchain game and details is ready, so will share it via PM

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    Need someone who has experience as a smart contract developer for the NFT games. Contact me for details?

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    Erc 721 smart contract with following functions : - minting - whitelist sale - public sale possible public sale no2 - nft on stored on blockchain not on ipfs - minting for founder and for airdrop ( specific number of nft) - ability to trade nft on website - connection with all possible wallets integration not only metamask - royalty fee for each transaction including transfer ( trade) - ability to trade different number of nft to different number ( expl i will give you 2 nfs for 1 of yours)( exhange) - random mint, ( not one after another) i will provide similar contracts to have references - all you need is to pu it in one contract and integrate with my website to create mint button and launch on live net. Please keep in Budget lines. and deadline deadline is 3 days from award. ...

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    ? YittBox is looking for a qualified Blockchain developer to join our team. You will be working with our clients for Blockchain projects. ? -------------------------------------------------------------------------------------------------- ? IF YOU CONTACT US OUTSIDE OF UPWORK, YOU WILL BE AUTOMATICALLY DISQUALIFIED! PERIOD, NO EXCEPTIONS.? ------------------------------------------------------------------------------------------ We're looking for a Blockchain Developer to join our team: - Proven experience as a blockchain developer. - Advanced proficiency in programming languages, such as C++, Java, and Python. - Extensive experience in back-end development, algorithms, and data structures. - Knowledge of cryptography and blockchain protocols. - In-depth knowledge of best practice...

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    We need a Solidity developer with a strong React foundation to help us deploy a GameFi project on the Binance Smart Chain. Our go to example currently is Crypto Mines, a space fleet management project, which also implements a Chainlink Oracle to offer true randomization in their calculations and stability across their marketplace. We would like to fork this project's smart contracts, deploy them and connect them to our frontend.

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    Ido launchpad 4 days left
    VERIFIED

    I need a decentralized launchpad on the binance smartchain Deadline: 2 Days

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    We want to create several smart contract on Solana. All the code will be review by our team.

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    I am trying to develop an NFT marketplace with Solana.

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    We must to realize new token, this token will be used in the our web site for pay the service inside and for pay the services in the web sites of our partners, this token must to have some important features: Auto Burn; Low fee Limit number token in 1 wallet Limit maximum number of tokens sell every hour Token swap High-level safety & security protocols and some other features.

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