Cadena de bloques Jobs

Blockchain is a distributed register that is used to maintain a continuously growing list of records, called blocks. It has revolutionary applications in finance (such as cryptocurrencies like Bitcoin) and decentralized applications like online voting.

Contratar a Blockchain Developers

Filtro

Mis búsquedas recientes
Filtrar por:
Presupuesto
a
a
a
Tipo
Habilidades
Idiomas
    Estado del trabajo
    87 trabajados encontrados, precios en USD

    Estoy necesitando desarrollador blockchain, web3, contratos inteligentes a medida. El proyecto esta pensado para armar cumunidad y un ecosistema saludable en el cual interactuen todas sus patrtes y obtengan todos beneficios de distintas maneras. Hay que crear una pagina en la cual se pueda comprar vender NFT y token. Van a haber quemas de token y NFT. Stakin y juegos, etc. Los NFT de la primer serie ya estan creados. igual el token, logo. Tengo pensado armar un gran equipo y comunidad. Tenes ganas de formar parte de algo grande, a largo plazo, sin techo. Ésta es tu oportunidad.

    $2089 (Avg Bid)
    $2089 Oferta promedio
    14 ofertas

    Buenas, queremos crear una sociedad en España, dedicada a la tokenización y fraccionamiento de propiedades, servicios vacacionales y equipamientos deportivos. Necesitamos crear y lanzar nuestro token en una ICO, como utility token para obtener la financiación inicial y posteriormente elaborar y comercializar NFTs que ayuden al desarrollo de cada uno de los proyectos. Nos gustaría poder contar con sus servicios, ya que necesitamos una estructura sólida y confiable, desarrollada por expertos en la formar un equipo de trabajo blockchain que trabaje junto con la dirección de sistemas. Quedamos atentos a cualquier comentario así como a establecer una reunión online en la aclarar los diferentes puntos. Saludos cordiales, English: H...

    $2846 (Avg Bid)
    Acuerdo de Confidencialidad
    $2846 Oferta promedio
    72 ofertas

    The pool already running and config as PROP Auto generator for all coins: Need to BTC Bitcoin Only Config and Set PPS+ or FPPS to at YIIMP POOL . Its not VPS Server. Team viewer remote for doing project require. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 30$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our company. ***

    $40 (Avg Bid)
    $40 Oferta promedio
    4 ofertas

    I already have a blockchain project now. but this have 3 bugs, so I need talented developer. This is made with react. So the developer need to know well in react, web3 integration. If you are interested, please bid with "web3 integration" on topline. After select the freelancer, I will share more details.

    $30 - $250
    Sellado
    $30 - $250
    18 ofertas

    Please use node.js to write a simple script to: 1. Generate infinite numbers of BTC address which is belong to one parent address by using Hierarchical Deterministic wallet Please conduct a transfer test in testnet of Bitcoin. Please also let me know that whether the transfer of bitcoin to any one of the BTC addresses will be consolidated to one BTC parent address.

    $146 (Avg Bid)
    $146 Oferta promedio
    12 ofertas
    Secure IoT blockchain base App. 6 días left
    VERIFICADO

    Secure IoT blockchain base Application Implement and test security architecture For IoT blockchain base using Edge& fog computing and defined software networks ( SDN ) These architectures are divided into the following: • Blockchain Cloud contains a holistic view of all managed IoT that have occurred to the cloud layer.. Blockchain technology enables to provide cryptographically validated transactions and data. and context-aware attributes-based CP-ABE encryption. It receives the user’s authentication & encrypt the data * IoT devices & IoT gateway * Application Analytics •Edge: composed of devices responsible for ensuring access control, secure data communication, and the application with security rules for managing local area networks. •Fog: compos...

    $280 (Avg Bid)
    $280 Oferta promedio
    9 ofertas
    Trading expert 6 días left
    VERIFICADO

    I am looking for an experienced blockchain and trading expert

    $498 (Avg Bid)
    $498 Oferta promedio
    37 ofertas

    The pool already running and config as PROP Auto generator for all coins: Need to BTC Bitcoin Only Config and Set PPS+ or FPPS to at YIIMP POOL . Its not VPS Server. Team viewer remote for doing project require. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 30$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our company. ***

    $31 / hr (Avg Bid)
    $31 / hr Oferta promedio
    3 ofertas

    We want to build a blockchain network on Hyperledger Fabric, a permissioned blockchain, so that it can be implemented for healthcare purposes. We want to build a network on the cloud preferably. And then evaluate its performance in terms of the scalability.

    $2997 (Avg Bid)
    $2997 Oferta promedio
    7 ofertas

    The pool already running and config as PROP Auto generator for all coins: Need to Add and Set Ethereum Coin PPS+ or FPPS to Existing YIIMP POOL . coind-geth & stratum & payments (FPPS or PPS+) need to configure Its not VPS Server. Team viewer remote for doing project require. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 30$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our company. *...

    $25 (Avg Bid)
    $25 Oferta promedio
    1 ofertas

    We are looking for an experienced React developer to join our team, who is excited about our mission to bring Defi primitives to Millions of users. They will be responsible for helping the team in building the most secure, seamless, and high-performance protocol that offers our customers an easy-to-use application for lending and borrowing in the Kadena ecosystem. Responsibilities You will work directly with the core team, where your experience will help the team to build an innovative lending and borrowing platform dapp. You will work to implement new features end to end. Collaborate closely with the team around both the designs and the implementation of the designs. Sense checking with the team and prioritizing work from our backlog. Requirements ● Proven background working as a React ...

    $32 / hr (Avg Bid)
    $32 / hr Oferta promedio
    25 ofertas

    I have an Ethereum EVM compatible type of Blockchain programmed with Proof of Authority (PoA) algorithm and which works very fine but since yesterday my chain suddenly stopped confirming transactions. I would like a blockchain expert to check it for me and fix the issue. Here is one the transaction I made that never got confirmed till now. Please bid only if you are truly blockchain expert otherwise don't waste my time and do not come to break down my service.

    $22 / hr (Avg Bid)
    $22 / hr Oferta promedio
    14 ofertas

    For our upcoming presale Marketing, we need an expert in presale and a good influencer

    $1251 (Avg Bid)
    $1251 Oferta promedio
    17 ofertas

    Need to build an API to interact with Hashgraph SDK for an NFT collection Please get familiar with Hashgraph SDK and Hashconnect. It is built on Hedera Hashgraph chain. Steps: Steps: 1. User Click button and it sends a transaction to my account of 10 HBAR using Hashgraph SDK/HTS 2. Backend api detects that it was successful and that it was 10 HBAR 3. My account ints nft[i] with CID[i] using hashgraph sdk then removes that CID[i] from the array 4. My account sends the NFT[i] to the user who sent the transaction through the use of Hashgraph SDK/ HTS

    $166 (Avg Bid)
    $166 Oferta promedio
    16 ofertas

    The pool already running and config as PROP Auto generator for all coins: Need to Add and Set Ethereum Coin to Existing YIIMP POOL - PPS+ or FPPS payment. coind-geth & stratum & payments (FPPS or PPS+) need to configure Its not VPS Server. Team viewer remote for doing project require. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 20$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our c...

    $15 (Avg Bid)
    $15 Oferta promedio
    2 ofertas

    We're in the planning phase of a new Token which will be connected to hardware in the real world. In our project we have people with experience from Finance, Web development, Hardware development and Design. We are now looking for an expert on developing on the blockchain. Your work will consist of everything from designing the product together with the founding team to deploying a final smart contract. We are looking for someone with experience from real world cases, show us previous smart contracts you've developed and deployed. Looking forward to chat!

    $24942 (Avg Bid)
    $24942 Oferta promedio
    14 ofertas

    Two parts to this request. 1). I need a magic eden sniper bot, web based. Preferably on-chain with wallet connection. A uto Buy/Sell based on Floor price. Magic eden $SOL integration. Rarity based listing and how much for. Search Function Search by X trait. List of Rarities based on NFTs listed. Dynamic buy price based on the floor price. Ex: “50” will buy the listings listed for 50% below the floor price! Auto-sell snipes – you can instantly list for sale in multiple ways! Auto buy when Floorprice reaches X - EX: “0.10” will buy listings for 0.10 or below! Auto Sell when Floorprice reaches Y - EX: “0.10” will sell listings for 0.10” 2). Minting bot that supports Magic Eden + launchmynft. PLEASE NOTE WEB BASED NOT desktop applicati...

    $5708 (Avg Bid)
    $5708 Oferta promedio
    25 ofertas

    I need a working prototype of a private blockchain concept using the hyper ledger, solidity, or other relevant tools which I can demonstrate with real participants and collect some data to include in my dissertation.

    $748 (Avg Bid)
    $748 Oferta promedio
    19 ofertas
    ICO token page setup 5 días left
    VERIFICADO

    Hello, I have an ICO page and need help with connecting my token to the page. If you have experience please bid to help me. It takes few minutes of your time. This is urgent.

    $23 / hr (Avg Bid)
    $23 / hr Oferta promedio
    42 ofertas

    I wanna support of miners who can help me my crypto bot

    $465 (Avg Bid)
    $465 Oferta promedio
    10 ofertas

    Like the title says : I need someone to build an Identity management system on blockchain

    $2947 (Avg Bid)
    $2947 Oferta promedio
    34 ofertas

    Hi we want to develop Android and IOS app using the Api of our crypto exchange we have ux ui designs ready

    $5497 (Avg Bid)
    $5497 Oferta promedio
    48 ofertas
    Blockchain - Fork NFT Lending Site 5 días left
    VERIFICADO

    Project: NFT Lending Site Fork READ FIRST BEFORE BIDDING!!! Please read the entire project description. We will not entertain low bids that are used to kick off conversations and negotiations to increase the price in the project. Please bid on the entire project, and take into consideration your bid price that could focus on profitability for you while staying competitive against other bidders. Also, note that we will be using milestones, and expectations for this project. Bidding: Please bid the total cost of the project, and the timeframe. Also, please take your bid and add 10-15% to the project to allow for a buffer of odds and ends. Project Summary: We are looking to fork a specific crypto project. DM me, and I will share with you the exact project name, website, and smart cont...

    $1703 (Avg Bid)
    $1703 Oferta promedio
    70 ofertas
    Mint Smart Contract (ERC-721) 5 días left
    VERIFICADO

    Hey I need to mint out a 777 supply no traits all the same NFT 777 tokens on the ETH blockchain

    $830 - $1170
    Sellado
    $830 - $1170
    88 ofertas
    I need Rust expert to fix bugs. 4 días left
    VERIFICADO

    Hi freelancers. I need an experienced Rust developer with strong working knowledge and excellent familiarity with blockchain technologies. I have some bugs in project developed by Rust. Budget TBD. Requirements: - Rust developer, ideally 2 years+ - Crypto experience: creation of smart contracts, wallet interactions, code audits. - Specific experience with Rust development for NEAR protocol.

    $170 (Avg Bid)
    $170 Oferta promedio
    12 ofertas
    Lead blockchain engineer 4 días left
    VERIFICADO

    Full stack engineer with experience in Rust programming needed for a long term projects. Should be able to work on independent projects and overseeing other development work. Represent the project as technical lead and communicate with other projects when needed. Extensive knowledge of blockchain needed.

    $54 / hr (Avg Bid)
    $54 / hr Oferta promedio
    13 ofertas

    AYRA ECOSYSTEM APP: AYRA BEP20 TOKEN: I need a withdrawal method for tokens earned by users. They must be able to withdraw Ayra token both in Metamask and in trust wallet as a minimum.

    $763 (Avg Bid)
    $763 Oferta promedio
    37 ofertas

    We have the following token: We have a Metamask removal method implemented but it is failing. We need a valid withdrawal method for all bep20 dapp wallets. Or at least compatible with Metamask and Trust Wallet working 100% for this app:

    $44 (Avg Bid)
    $44 Oferta promedio
    4 ofertas

    We are looking to hire a Lead Solidity Engineer who is self-motivated, goal-orientated, and a strong team player. The perfect candidate takes pride in their work and knows what it means to deliver high-quality products. This position will oversee both internal and external smart contract developers. Responsibilities: Lead development of all of the company’s smart contracts Manage and grow a team of smart contract developers Develop, test, and deploy new smart contracts using Solidity Work with product and design for continued enhancements Keep smart contracts in-sync with developed protocol(s) Monitor the ongoing health of our smart contracts and ensure their security Build and maintain core smart contract technologies ...

    $45 / hr (Avg Bid)
    $45 / hr Oferta promedio
    60 ofertas

    Bitcoin transaction generator app needed for educational purposes.

    $595 (Avg Bid)
    $595 Oferta promedio
    26 ofertas

    The pool already running and config as PROP Auto generator now: FPPS or PPS+ auto generator payments method configure and setup Its not VPS Server. Team viewer remote for doing project req. If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 80$**** Higher BID & Auto bot BID will be removed. If you BID Don't ask for Higher BID in private, your Bid will be removed & and You will get Block by our company. ***

    $80 (Avg Bid)
    $80 Oferta promedio
    7 ofertas

    Hi, I am looking for a Blockchain / solidity developer to Create a Bot to execute Flash loan operations. Looking for a long-term working relationship. Regards

    $718 (Avg Bid)
    $718 Oferta promedio
    52 ofertas

    Being a part of UpRizeNow, you will be able to aligned to get niche skills technology projects at anytime. While our mobile application facilitates sometime extras that increase extra earning: • Avail IT projects faster and at your rates • Communicate more effectively with company • Share real-time information & timesheet for faster approval • Get Instant payments & ratings That being said, if I can provide more insight or support on how to leverage UpRizeNow to get into new way of work, I am happy to help. Do you mind taking 20 seconds time to download our app? Explore Mobile App Now: App Store: Play Store: Register through Web: I look forward to talking with you.

    $39 / hr (Avg Bid)
    $39 / hr Oferta promedio
    5 ofertas

    I want to mine eitherium with Google colab python script in free

    $14 / hr (Avg Bid)
    $14 / hr Oferta promedio
    12 ofertas
    NeoEden´s Realm 4 días left

    NeoEden´s Realms origins are inspired from a utopic fantasy world, brought to life with a modern twist involving tangible blockchain solutions, each NFT asset is carefully hand drawn and programed by our brilliant world wide team! Born from fantasy, brought to reality, Neo Edens Realm aims to be a standard for future communities by having impactful decisions driven by its members through NFT technology & DAO solutions, having the project a life of its own thanks to the members that compose and support it. Owners of each Neocard will be able to claim 5 lovely $Roses a day for a period of 5 years , bringing with it new era of “Rosenomics” to the Realm. These $ROSES will be used for various utilities, such as NFT breeding, onchain metadata changes or implemented DAO vot...

    $675 (Avg Bid)
    $675 Oferta promedio
    20 ofertas

    Looking for a good NFT developer who holds good experience in NFT development especially from India

    $662 (Avg Bid)
    $662 Oferta promedio
    19 ofertas
    Crypto Content Writer 4 días left
    VERIFICADO

    I'm looking for a writer with a passion for crypto to write articles for a new blog project... This will be focusing on just one new area of blockchain only, a new protocol that could revolutionalize the industry. This is very much a testbed opportunity and time would be dedicated to researching and writing blog posts on just one up-and-coming protocol This would be an entry-level position that could turn into something long-term and pretty lucrative for the right candidate. Required is a high-level understanding of blockchain and the ability to explain technical complexities. PLEASE ONLY APPLY - If you have a good understanding of blockchain as this particular protocol is so new it will go over your head. On the other hand, if you have a passion for web3 and the future of block...

    $4 / hr (Avg Bid)
    $4 / hr Oferta promedio
    56 ofertas

    A Cryptocurrency technical advisor for my BEP20 Token - I need general assistance to learn how to build and implement : - Reflections - How token holders are issued these reward tokens 4% is Redistributed to all existing holders - Liquidity Pool Acquisition 3% is added to liquidity -Token Burn 2% of tokens are burned -Growth Fund 1% is added to the SafeMoon Ecosystem Growth Fund - You need to advise how my new BEP20 token will build and implement these requirements. No coding is required.. Just technical advise.

    $14 / hr (Avg Bid)
    $14 / hr Oferta promedio
    29 ofertas

    I want to make a lotto game and users can play with picture below is just a rough design, just to explain the principle of how to play. If you are interested in doing this project, please contact me.

    $3145 (Avg Bid)
    $3145 Oferta promedio
    28 ofertas
    Complete my NFT marketplace 4 días left
    VERIFICADO

    I would like to finish developing my NFT marketplace which was left undone.

    $1158 (Avg Bid)
    $1158 Oferta promedio
    35 ofertas

    I need a smart contract expert to build a smart contract similar to another existing smart contract's decompiled bytecode. Let me know if you previously have worked woth decompiled bytecode.

    $225 (Avg Bid)
    $225 Oferta promedio
    28 ofertas

    I am looking for a blockchain developer who can code smart contracts, web3 ability and is able to create valid APIs

    $169 (Avg Bid)
    $169 Oferta promedio
    63 ofertas

    I am interested in developing a project( real estate ) tokenization platform and decentralized, send me a message if you have experience and can handle the smart contract.

    $1299 (Avg Bid)
    $1299 Oferta promedio
    67 ofertas

    Solutions to some significant challenges of payment transactions for electric batteries, charging points queuing, and charging process;

    $256 (Avg Bid)
    $256 Oferta promedio
    17 ofertas

    The project is to build a simple betting website in which users can register with their MetaMask wallet and bet on available sports events. After an event outcome is decided by admin, users who predicted the result correctly get rewards proportional to their betting amount and the house gets 5% of the total sum. -Events are created by admin. Each event has two competing teams each with its own photo. There can be 4 possible outcomes for each event (win, loss, draw, cancelled). - Each user can have simple profile (avatar and bio and showing his betting history) - User also have settings options to be notified about their betting outcomes and newly published bets. - Each event has a deadline to bet, amounts betted on each result and the list of participants on each event. Each event also ...

    $63 / hr (Avg Bid)
    $63 / hr Oferta promedio
    42 ofertas

    We have a ERC-20 based token, which needs a pre-launch audit. Scope of work - code accuracy - proof of stake readiness - code fulfills development requirements -correction of errors -confirm launch readiness We assume 2-3days work the max. Please share previous experience

    $2355 (Avg Bid)
    $2355 Oferta promedio
    19 ofertas

    A configured and functional blockchain infrastructure based on Hyper-ledger or ethereum , demonstrates the traceability of transactions and the conversion of points into a kind of currency that can be used within the platform. VM , code sources , documents....etc will be provided . i need an expert that can do that quick. ( two developers failed on this project for lack of competency, if you don't know anything about Blockchain ,there's no reason to contact or to accept this job) . Reach out to me if you have the necessary skills and please stop asking me to increase the budget !

    $278 (Avg Bid)
    $278 Oferta promedio
    30 ofertas

    We are providing a code signing service for various platforms. For macOS, we plan to provide a CryptoTokenKit provider that can be used by Xcode, Xcodebuild and codesign, and that talks to our backend service for actual signing operations. We also need an installer that does not require user interaction. We already provide a cross-platform C++ library that connects to the backend, which does the actual crypto operations. A few modifications might be necessary on our side. You will need basic applied cryptography knowledge. You must understand the concepts of code signing, certificate management, and smart card key access in macOS (although no physical smart cards will actually be used). You will contribute platform-specifc knowledge to a team of experienced software developers. P...

    $39 / hr (Avg Bid)
    Acuerdo de Confidencialidad
    $39 / hr Oferta promedio
    16 ofertas
    Build me decentralised platform 3 días left
    VERIFICADO

    We need a decentralised eSports platform combined with fantasy tournaments,only teams with good experience in blockchain technology may bid, companies near NCR region should bid

    $10882 (Avg Bid)
    $10882 Oferta promedio
    24 ofertas

    I want to create and deploy smart contract to ETH

    $508 (Avg Bid)
    $508 Oferta promedio
    49 ofertas