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. Ansæt Blockchain Developers

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    55 jobs fundet, i prisklassen EUR
    Test and Audit Smart Contracts 6 dage left
    VERIFICERET

    We will be awarding this project to multiple developers. We want developers to rigorously test and audit a few smart contracts. For every loop hole or security issue found, a bonus will be released. To be awarded this project find at least one security issue in the files attached and send it in as a message.

    €111 (Avg Bid)
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    5 bud

    I need to upgrade this fork of Litecoin: [log ind for at se URL] A new repository with new github account needs to be created. THIS PROJECT REQUIRES ALL WALLET VERSIONS TO BE UPGRADED to reflect the most recent changes to the Litecoin Core. In addition to upgrading ALL wallet versions to reflect the most stable version of Litecoin, I will need a blockchain explorer and a basic website completed. ...

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    14 bud

    I want to hire an expert who well versed at Blockchain and Bitcoin...

    €349 (Avg Bid)
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    14 bud

    Hello, i want a decentralized peer to peer exchange done based on Ethereum. I want custom design,charts,good interface done and some other special features.

    €2226 (Avg Bid)
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    22 bud
    ICO Quora Posts 5 dage left
    VERIFICERET

    Need a mass Quora posts that links back to a project. I'll pay 30 seconds per post.

    €300 (Avg Bid)
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    3 bud
    Open Blockchain 5 dage left

    We are a blockchain for Global Traders Agreement and Deliveries. We are starting ICO by October We Need Experienced community manager and telegram moderators for our Korea, Chinese and Japanese communities. Basic skills: Telegram Add Users based on your location Good interaction and conversation with community in your language and English Availability

    €570 (Avg Bid)
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    8 bud
    Confidence Coin 5 dage left

    I am a professional java developer, and I need help with my Java project. I created many tasks on my Github repo. Please take a look and tell me what of them you would like to do. If I like your work, I will hire you again. Repo: [log ind for at se URL] Website: [log ind for at se URL]

    €206 (Avg Bid)
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    4 bud
    Crypto QT wallet Re-design 5 dage left
    VERIFICERET

    We are looking for someone that can do a full wallet re-design of a qt wallet to look something similar to this. [log ind for at se URL]

    €488 (Avg Bid)
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    16 bud
    Masternode Listing Script 5 dage left
    VERIFICERET

    I need masternode listing script it will get infos from back end and will show on front end. You can see here ex: [log ind for at se URL], mnrank.com. If you dont know anything about masternode please dont bid

    €147 (Avg Bid)
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    7 bud

    background:The BON introduces a new blockchain architecture designed to achieve vertical and horizontal scaling of distributed applications. Open networks provide account, authentication, database, asynchronous communication, and application scheduling across multiple CPU cores or clusters. The resulting technology is a blockchain architecture that eliminates user fees and allows developers to qui...

    €142 (Avg Bid)
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    10 bud

    Hi, We need a white paper written for a crypto currency project which we are in a half way, Rewrite of our content to Perfect Whitepaper. Project will include pre-sale and project support working system. Looking for someone to take my concept and create a white paper including market research, references and relevant related charts. We are looking for a professional who have experience in writ...

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    15 bud
    Trophy icon Design a Blockchain Logo 28 dage left

    Design a sleek and minimalist logo for CryptoJobs: [log ind for at se URL]

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    60 indlæg

    i need a blockchain and a cryptocurrency like [log ind for at se URL] But my coin will have extra functionality

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    12 bud

    Hi. I am a university student I have to do a Decentralized Voting System using blockchain. System should includes the following components. *Firstly, Registration model is a service for authenticating and registration of legitimate voters. This can be done by online registration, And also, the system includes a registration system for candidates. This can be done at the Election Department. ...

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    15 bud

    I need a blog writer who has intermediate to professional knowledge in the ‘Bitcoin and Cryptocurrency’ niche. I am looking for a strong long-term relationship and a dedicated writer for our website. Long-term would mean, writing 8-10 articles per month, maybe more. Before going ahead with the long-term work, I would like to award a small project of 3 articles. This project will help m...

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    6 bud
    Translate homepage to Japanese 4 dage left
    VERIFICERET

    we need to translate text related to block chain from EN to JP

    €60 (Avg Bid)
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    39 bud

    we have a research article to be written for which we need a freelancer who should be technicaly sound in blockchain/crypto domain.

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    5 bud

    I need a professional expert to setup bitcoin auto mining By applying this, you are agreed that you will deliver proposal, attend interview and need to sign NDA about not reuse or publish or share the code or part of the code to others. ---------------------------------------------------------------------------------------------------------------------- Please develop proposal (max 3 pages) sho...

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    14 bud

    Hello all , I have some cryptos ( bitcoin,eth ) which I want to invest in business to earn more cryptos or money. I need ideas from the right freelancer who would help me and guide me in the right direction. Please if u know about cryptocurrency business , then apply.

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    21 bud
    ICO CryptoCurrency - White Paper 3 dage left
    VERIFICERET

    Looking for expert white paper writer who has technical skills and knowledge and experience to write white papers for different ICO's If you have written whitepaper for an exchange website it will be a plus Must have good knowledge on blockchain, whitepaper, bitcoin, ICO and crpytocurrency

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    17 bud

    We are looking for web dev with experience in Binance API.

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    24 bud

    Looking for a very experienced developer for a project. you will work with our team to design the Multichain blockchain for our remittances business. We would also want a UI developed as well as and app for mobile users. We have full details about the project that we are willing to share upon reques

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    59 bud

    I am looking for senior smart contract developer having experience in ICO, token and smart contract, dapp development This will be the long term position. We are building e-sports platform and we are going to integrate blockchain technologies to our platform. You should answer our some questions, this is for selecting right candidate. please have a look our questions and bid here with answers I...

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    38 bud

    Hello. I want a dice game website based on crypto as well as fiat currency. Requirement 1) Dice Game 2) List number of cryptocurrency in payment mode as well as VISA & Mastercard also

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    21 bud

    I am in search of a new freelancer who has extensive knowledge about Blockchain as my previous freelancer has left. Most of our article are related to Token-Curated Registries. Since I have interviewed many candidates, but they don't have good skills, I have posted this on Freelancer. The selected freelancer will have to write a small sample of 300-350 words before I hire him permanently for...

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    20 bud
    Pbot for bitmex 3 dage left

    I want to create a pbot for bitmex

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    3 bud

    Basically, What I am looking for is someone who knows the ethereum blockchain (i don't mean the ideas, I mean the code). It's so complex and maybe there exists someone who understands how to modify ethereum code .

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    7 bud

    I live in Dubai. I have a great online business Idea that is in the stage of development. Looking for a developer who is knowledgeable in building websites and have some basic knowledge in blockchain technology for a small part of the project.

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    64 bud

    You know what is MNO well! You must be a blockchain guru! this is in need of simple masternode mornitoring build like masternodes.online. if you have experiences with masternodes monitoring already, then it's so easy. as I have said on my description, this is very simple website building. we have our own blockchain platform, and startup company who is looking forward to create a nice ROI. If...

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    30 bud
    ICO Dashboard 3 dage left

    ICOForo's state of the art ICO Dashboard is well defined & customizable. Also had multi-wallet integration, KYC Documentation & multilevel secure Features. [log ind for at se URL]

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    16 bud
    getwork/proxy setup for cryptopool 2 dage left
    VERIFICERET

    We need some assistance in setting up the getwork/proxy for our mining pool. We need to setup the workers to connect to nicehash and slushpool api to send and receive shares from the miners from our pool. We also need some expert assistance in tweaking/optimizing the config for json files for the CoiniumServ mining pool software and the coins that are in use.

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    5 bud
    Build a BitKong Type Website 2 dage left
    VERIFICERET

    I would like a developer to build a bitcoin gambling website similar to [log ind for at se URL] . Previous experience in gambling development and bitcoin / blockchain projects is a must! Generic responses will not be considered.

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    39 bud

    Talented crypto developer wanted for s revolutionary project. Please note the team will get paid with our company token. We are looking for ONLY 2 more developers to be part our team.

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    15 bud
    Help me build a new blockchain 2 dage left
    VERIFICERET

    Hello everyone. I want to make my own coin and my own blockchain. I'd love to hear your ideas and suggestions. IF you're well experienced, I will hire you. we will talk about the prices in private. I need someone remotely working and helping me understand more and more. I'm stuck about what to do.

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    15 bud

    I need you to go through my research sample whitepaper. I want you to understand everything I wrote. Then I want you to figure out how the platform for the ICO would work. I want you to compare the platform idea to other platforms. Please do not ask to do this project if you are not an expert in Blockchain

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    1 indlæg

    i need someone ambicious and with a lot of experience in block chain

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    53 bud

    I have 3 projects that require a developer, it's 3 different ICO's which needs to be developed through blockchain tech. So you must know blockchain from top to bottom for this project, this project. We are purely startup so our funds are tight, compensation will be mainly once we are up and running for investors but till then I will provide enough to help you out. If you know how Ico...

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    37 bud
    start my blockchain wallet service 2 dage left
    VERIFICERET

    start my blockchain wallet service only I pay only 200 INT

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    6 bud

    API so I can transfer ETH from my wallet to Smart Contract need to contact to ico site when client buy the token its go to admin wallet and send to the smart contract and make the token

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    14 bud

    Please read description. We are creating a global log of environmental challenges and solutions on blockchain. We are powering this by an autonomous community with an interactive marketplace. We believe that all of the solutions to our world’s challenges are here today. The technology is available to us now, we only need to apply it. What is essential is a platform to facilitate c...

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    39 bud

    Hi everybody, I'm the CEO of a unique business model based on crypto, if you are interested to be part of the change please get in touch with me, please keep in mind there won't be any money compensation, but instead you will be paid with our token. If you want to know more about it please get in touch with me now!

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    14 bud

    I need an Android app. I would like it designed and built. I’m also after an app mobile app developer that can develope an Android / iPhone app that allows users to send a tip for a beat that they like in crypto So the app basically display a list of beats from a web service. The user can Play/ download a beats / send to email address. They can play the beat for free however should they l...

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    11 bud
    Build a Coin API 1 dag left
    VERIFICERET

    Existing masternode coin needs developer to build an API to enable integration of coin wallet on website

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    21 bud
    Ethereum engineers 1 dag left
    VERIFICERET

    We have a project to build a private blockchain on Ethereum. The Ethereum private blockchain will do the following: Hold documents Provide Smart Contracts Generate private keys so that users can review documents and smart contracts

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    41 bud

    We are in need of someone who can help us set up a Hyperledger Fabric network and a chaincode (details to be discussed). The candidate will need to provide a detailed report of their work. They will also need to walk us through the steps of installing and initiating everything from scratch, as access to our servers will not be provided due to security concerns. It's preferable that the cand...

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    23 bud

    Problem: A sells some physical thing called X to B. How to somehow prove to a third party C that B bought X from A ? - Note that I am fully aware of many supply chain based on blockchain out there, including Vechain, Blockverify, WaBi etc. I don't want to use them at this phase because they are either complex or not economically feasible. - At this phase we don't need to discuss about a...

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    15 bud

    Hi, I need an experienced Linux coder to provide some code for me to enter into putty. You should be familiar with blockchain as well. Due to sensitive information I need to enter the code myself but I will need you to write it for me and possibly troubleshoot if we run into problems. I will provide some guidance and the base code I need - you just have to fill in the blanks. For a Linux profe...

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    25 bud

    I need a ghostwriter for some blockchain and fintech articles

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    36 bud

    Need a crypto trading platform with following pairs BTC <-> GBP, USD, EUR ETH <-> GBP, USD, EUR both core wallet and buying selling from external exchange needs to be supported and interchangeable from admin interface. High end security to avoid hacks

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    49 bud
    private blockchain 3h left
    VERIFICERET

    I need to build my own private blockchain

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    53 bud

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