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    31,231 blockchain ethereum bitcoin jobs found, pricing in USD

    You have to design a simple platform, the only function is to send bitcoin and to receive bitcoin, user registration, each user can have/generate/own max 8 bitcoin wallet addresses, first address generate automatically when register. To win this contest you need to design only 1) homepage and 2) wallet page. If you win, you need to deliver remaining: 1) home 2) registration/forgot password/logi...

    $250 (Avg Bid)
    $250
    1 entries
    Setup of bitcoin website 6 days left
    VERIFIED

    Hello, I have installed that script: [login to view URL] need someone expert in bitcoin for make setup of script for buy and sell bitcoin and ethereum with paypal.

    $140 (Avg Bid)
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    2 bids

    I need assistance in building an Idea for an ICO, making a presentation and white paper, choosing the technology, and building crypto-economy ideas around the concept.

    $543 (Avg Bid)
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    14 bids

    Create simple platform, configure server, to allow user registration, each user can have/generate/own max 8 bitcoin address, first address generate automatically when register, the node should fully connect to bitcoin blockchain network, the only function is to send bitcoin and to receive bitcoin.

    $1011 (Avg Bid)
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    22 bids

    CEO, Entrepreneur & Investor. Blockchain business. Launched 3 startups. Binaryx Chief Executive Officer (CEO) & Founder August 2019 - Present Tallinn, Estonia GeniusMarketing Managing Partner August 2019 - Present YouDigital September 2017 - Present Ability to write clearly and help with word processing when necessary. Warm personality with strong communication skills. Ability to work wel...

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    5 bids

    We are looking forward to announce the job order as the following for car dealerships company in Cambodia to work on the international project which minimum requirements from budget of $2500 so if you are qualified to the jobs below please feel free to submit your documents accordingly There are three functions of transfer That I need you to do so please confirm all of these works at $2500 okay...

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    10 bids

    We are looking to hire a team to monthly monitor and protect our app and website [login to view URL] We are having issues with unauthorized database dumps and access to panel through possible back door codes. We will need full security run and corrections made if needed. This price is monthly bid for service. I would like to hire a long term team 1 to 5 people eventually so please make sure you ...

    $218 (Avg Bid)
    Urgent
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    7 bids

    STOP! Read the ENTIRE DESCRIPTION! I am looking for a well versed senior Blockchain Architect developer who is well versed. You MUST BE FLUENT IN C/C++ YOU MUST have +5 years of Blockchain Development Experience Must have Experience building Blockchain Architecture from the ground up DO NOT BID if you've only COPIED REPO and Made modifications In your bid describe what you have Archite...

    $10 - $25
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    0 bids

    Develop an ecommerce marketplace, so sellers can sell items on the site and buyers can purchase. Escrow CRYPTO payment gateway must be integrated to the site. (Multi Sig Wallet). Other basic functionalities will be discussed. Developer must have skills and experience of cryptocurrency , blockchain and escrow.

    $1528 (Avg Bid)
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    37 bids

    Having an issue, simple help needed; im trying to generate bitcoin public address in C++, i reached the part where i have a public key, and i want to convert it to public address. everything online says to convert to sha256 and then apply ripemd160 on it. But when i apply sha256 the result i get is different from online examples (they all say that sha256 should be done on the the byte array and no...

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    I need a webservice based on http / api to give me following services 1) a method to create public / private key on bitcoin network ( HD Wallet / generate address) 2) a method to transfer btc / any token on btc network 3) a method to get special address wallet balance and transactions with details Complete explain about project Webservice must be worked dedicated without any un Unnecessar...

    $320 (Avg Bid)
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    4 bids

    Hola, tengo experiencia en comercialización de criptomonedas y veo una oportunidad para mi negocio en la creación de una moneda digital para refugio de valor y intercambio Hello, I have experience in trading cryptocurrencies and I see an opportunity for my business in creating a digital currency for a haven of value and exchange

    $6478 (Avg Bid)
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    17 bids
    Project KD 6 days left

    We are looking to create an E-Commerce store using Blockchain. It will be a global store with standard E-Com functions, including the following features: 1. Rewards Scheme. 2. Coupons/Gift Certificates. 3. Integration with in-store PoS Terminal. 4. Integration with 2-3 Logistics Partners, e.g. DHL - TBC. 5. Integration with 2 Payment Gateways, e.g. PayPal, Stripe, WorldPay - TBC. 6. Selectio...

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    I need to make a report that contains innovative ideas to take advantage of blockchain technology by applying the verification system,

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    1 bids

    I need to create a report containing innovative ideas to take advantage of blockchain technology by applying the verification system,

    $100 (Avg Bid)
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    1 bids

    I need to create a report containing innovative ideas to take advantage of blockchain technology by applying the verification system.

    $100 (Avg Bid)
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    Bitcoin crypto 6 days left

    i am seeking someone versatile with it

    $262 (Avg Bid)
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    2 bids

    I need you to develop some software for me. I would like this software to be developed for Windows using PHP. developer must have skills and experience of cryptocurrency , blockchain and escrow. for reference you may see [login to view URL] preference will be given to experienced developers wh has done similar projects in past.

    $2685 (Avg Bid)
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    We are currently looking for a frontend developer to help us get our project running, most of the project is complete but have ran into some problems, looking for someone to help us get our project running knowledge of decentralized exchanges with staking is a must. please send me a link to your past projects if you choose to bid. thanks

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    21 bids

    Please only apply if you know what you are doing | NO AGENCIES please!!!! I am looking for a software developer with experience working with Boolean Satisfiability (SAT) and Data mining experience for creating a bitcoin mining application. I red this paper very recently: [login to view URL] and I need to develop a new SAT-based bitcoin miner similar to this one: [login to view URL] Can you do...

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    Account opening (this process goes through Know Your Customer questionnaires) Deposit Account Open/Request more information/Reject Deposit Transfer Exchange Withdraw

    $2120 (Avg Bid)
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    36 bids

    Hi, We have an existing IPB forum. We would like to develop a plug-in to it which could 1. Let every user to setup an Bitcoin address or an NBdomain(alias to a Bitcoin address). 2. Add a tip button to each post that allows anyone to pay to the post-owners Bitcoin address ( we have Bitcoin payment JS library) 3. The post will show a tip summary including who and how much tips paid to the post.

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    The program btcrecover implements wallet password cracking for a variety of bitcoin wallets but not coinomi. Looking for someone to implement this for coinomi's AES wallet password NOT the seed phrase recovery. [login to view URL] Seed Phrase (Mnemonic) Recovery for the following wallets Electrum (1.x, 2.x, 3.x and 4.x) (For Legacy and Segwit Wallets. Set --bip32-path "m/0'/0...

    $577 - $1154
    Sealed NDA
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    22 bids

    We are looking for an experienced frontend developer who can link the functionalities from our smart contracts to the frontend. You will be working with our current developer in establishing and linking our project together. We are building a decentralized exchange and have certain requirements as follows: 1. Past experience working Decentralized exchanges, fintech products, knowledge of uniswap ...

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    I need a new website. I need you to design and build it.

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    10 bids

    We are seeking a creative content writer to work on a permanent basis. Preference is given to content writers familiar with the blockchain/crypto/fintech landscape. Minimum Experience: 1 Year Requirements: Write the blog post content according to the structure provided. Do the necessary research online and back the fact or stats with relevant links 100% Unique article. No plagiarized content. ...

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    Looking for Bitcoin mining expert to lead implementation of a medium-scale bitcoin mining operation.

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    Hello! Looking for someone who can develop bitcoin transaction software

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    Hi I am looking for an app developer who has experience in cryptocurrency/blockchain app development to build a new crypto currency portfolio tracker which will be available on ios and android The app should allow the users to see the following : Buy and sell price Price percentage change Real time alerts of changes in price threshold such as when a coin drops below and rises above a certain pr...

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    I need a writer who can help me with technical documentation of my blockchain product, Previous work in tech writing is mandatory

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    Need a writer who can help me with my website content from landing page to blogs. It's for prospective clients and developers.

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    I need you to prepare a research paper on "Deep learning with financial risk analysis of digital currency under blockchain technology"

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    9 bids
    Blockchain Content Writing 5 days left
    VERIFIED

    We have a home page for which we need content for website...But we need it in 1 day.

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    11 bids

    we need tron based blockchain developer it's urgent basic

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    5 bids

    do you have to ruby on rails and bitcoin skills. I will long project

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    3 bids

    I want a Website where customers can buy Bitcoin directly from me or Sell directly to me.

    $581 (Avg Bid)
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    37 bids
    Flutter app development 5 days left
    VERIFIED

    Flutter app development In this app main features 1- Multivendor Ecommerce 2- Mlm system 3- Wallet Feature : in wallet feature, to use the wallet within register vendors only, for example, memberA register as vendor and we provide the one qrcode for that vendor, memberB register as normal user, he refer members and earn money , when memberB goto the memberA shop and purchase ...

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    I want cryptocurrency exchanges with my bitgo wallet in bitcoin site. My site is built by ruby on rails.

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    create 1 page UI 5 days left

    hello freelancers, looking for a talented and skilled designer for a 1 page blockchain design please post your behance or dribble account in your bid, otherwise im deleting your bid

    $115 (Avg Bid)
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    25 bids

    Escrow system in blockchain platform with smart contract

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    Trophy icon Design for name card/ logo 5 days left

    Hello, I would like a logo made for a name card and also for a website. The company name is Matterhorn Ventures. It is a blockchain company. I would like the logo to be minimalist/clean, and with a white background. Maybe I just want the name Matterhorn Ventures but with nice/elegant font. For some creative ideas- Matterhorn is a mountain in Switzerland so maybe there can be an idea spun off ...

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    We are looking for an entrepreneurial-minded writer with deep knowledge of the blockchain ecosystem (with focus on NFT tokens) to write our short whitepaper Ideally someone with experience with products that are not yet fully formulated

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    I have a non-profit social impact project with my school where I want to locate each planted tree with GPS coordination. Possibly 3D looking image.

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    5 entries

    i need expert for following wallet bitcoin wallet cryptocurrencies Crypto Currency Crypto Exchange Crypto Website Crypto Wallet bitcoin ethereum tron Blockchain if you have experience in the same then bid with Portfolio

    $10 - $250
    Sealed NDA
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    I need a multicoin casino project with cash out, deposit features that takes multiple cryptocurrencies: bitcoin, litecoin, ethereum, ripple, and more with wallet. Livechat feature, includes Roulette, CoinFlip Slots and Slot Machines, BlackJack and multiple player interactivity. 2 Player authentication, SSL, Graphics must be amazing, and real money features should be included. I'd like to see ...

    $18250 (Avg Bid)
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    Hedera Hashgraph Wallet 4 days left
    VERIFIED

    We ave an Ethereum wallet running on NodeJS which works perfect. We would like to modify the code to allow Hedera HBAR token. On request we can give you a url to our current wallet.

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    I am looking for someone to integrate ENJIN Blockchain API into my WooCommerce website. You must have blockchain experience!

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    The web app and the tool for bidding for domain names on the Handshake blockchain. Looking for a full stack developer (JS) to implement both frontend and backend talking to the Handshake node. - Design/UI is provided and is based on Material-UI theme (React) - The expected stack is React and Nodejs - You'll need to install and configure the local Handshake blockchain node for the app - You&#...

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    Ethereum Defi Project 4 days left
    VERIFIED

    I need an ethereum expert, especially one who has experience with DeFi and understands Uniswap to work on a simple script. Only bid if you have the relevant experience.

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    Crypto Niche Content Writer 4 days left
    VERIFIED

    Hello, I'm looking for. content writer experienced in crypto and blockchain niche and have written articles for ICO, Defi projects. Please send your samples

    $13 (Avg Bid)
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    8 bids