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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.

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    26 trabajados encontrados, precios en USD
    Desarrollar Sitio Web PWA -- 2 1 día left
    VERIFICADO

    Necesitamos desarrollar Sitio web en el formato PWA utilizando tecnicas MEAN, el sitio web debera funcionar como tienda en el cual podamos mostrar y vender nuestros productos, requerimientos de proyecto en Archivo Adjunto

    $553 (Avg Bid)
    $553 Oferta Promedio
    27 ofertas

    We need to create a nodejs piece of code for multi-payment BTC-addresses at once. Reply to candidates who work with blockchain technologies and payment processing only. Input: 1. BTC wallet ID from [iniciar sesión para ver URL] & wallet password or BTC address to make a payment from & address private key; 2. List of BTC addresses to transfer funds to; 3. Sum to send to each addres...

    $523 (Avg Bid)
    $523 Oferta Promedio
    8 ofertas

    I'm looking for a freelancer who can create video courses on 'IT Services - Blockchain' that could be hosted on an online learning platform. Please revert on your experience in online training and the language that will be used in the training.

    $250 - $750
    $250 - $750
    0 ofertas

    i need to introduce blockchain to my code. we will use it when we do connection with two different players in supply chain. like supplier distributor or to other supplyer. also we have to put specific steps in the supply chain like in reception and end of production . also we need to know the cost that we need to pay for the blockchain (fingerprint in each step the way we do it and implement it)

    $16 (Avg Bid)
    $16 Oferta Promedio
    2 ofertas

    We are a Bangalore based company dealing with project management.

    $4185 (Avg Bid)
    $4185 Oferta Promedio
    18 ofertas
    Blockchain Consultant 6 días left
    VERIFICADO

    Hello We are having a p2p crypto exchange [iniciar sesión para ver URL] we are looking for a Blockchain Expert to Advocate on suggesting new features and such things.

    $517 (Avg Bid)
    $517 Oferta Promedio
    12 ofertas

    Hello, guys, Who we are: I am a delegate of a new Blockchain startup. Our mission is to create the most secure software for working with modern blockchain technologies. What we are searching for: Full-stack developer with extensive experience in both: web and Blockchain development technologies. A guy, who has experience in working as Senior/Lead developer at least for 3-5 years. If you have exp...

    $51 / hr (Avg Bid)
    $51 / hr Oferta Promedio
    12 ofertas

    i need to introduce blockchain to my code. we will use it when we do connection with two different players in supply chain. like supplier distributor or to other supplyer. also we have to put specific steps in the supply chain like in reception and end of production . also we need to know the cost that we need to pay for the blockchain (fingerprint in each step the way we do it and implement it)

    $23 (Avg Bid)
    $23 Oferta Promedio
    3 ofertas

    traceability system where we include block chain.

    $30 (Avg Bid)
    $30 Oferta Promedio
    3 ofertas

    We would like to request the production of a wallet that allows BTC deposit and withdraw using blockchain technology and an admin panel that can manage the deposit and withdrawal. BTC is the only currency we handle, and we would like to produce on a blockchain basis. We would like to request development including the API. Please refer to below for the model, [iniciar sesión para ver URL] ...

    $1435 (Avg Bid)
    $1435 Oferta Promedio
    36 ofertas

    I want to add a pool on my website for gathering computing power of multiple users and work on same task.

    $119 (Avg Bid)
    $119 Oferta Promedio
    2 ofertas

    Hello, What I'm looking for is something like an ICO payment page, a page that works like this: 1) A form where user insert ERC-20 token address and amount, then button "Continue" 2) Pressing "Continue", will appear on screen the amount that need to be paid in ETH based on the exchange rate owner decide for the token and the address where ETH has to be sent 3) After ETH pa...

    $601 (Avg Bid)
    $601 Oferta Promedio
    18 ofertas
    Block chain 4 días left
    VERIFICADO

    Want to create new crypto currency reparation goal need someone to be able to also write a smart contract for its and also wanted to be based on investors obviously

    $1741 (Avg Bid)
    $1741 Oferta Promedio
    29 ofertas

    I need a personalized Linux OS distribution image for clients, web interface for managing, admin backend, etc. I have my own servers to host it. I have to be able to add or remove mining softwares, pools and other settings on the admin back end, control my customers balance, etc. it has to support both GPU and CPU mining simultaneously.

    $1204 (Avg Bid)
    $1204 Oferta Promedio
    16 ofertas
    Blockchain Expert Needed 4 días left
    VERIFICADO

    seeking a blockchain developer. Please feel free to contact me.

    $1225 (Avg Bid)
    $1225 Oferta Promedio
    27 ofertas
    Crypto CD Art 4 días left

    What is Crypto CVD Art? Crypto CVD Art is a marketplace of unique and rare stickers all over the world. Born from the idea of ​​the Coronovirus pandemic, it wants to bring more unique than rare collectibles in your homes. Nice collectibles with different types of rarity will be the result of a fantastic and accurate selection model. Based on the Etherum blockchain, it allows you to buy and rese...

    $624 (Avg Bid)
    $624 Oferta Promedio
    9 ofertas

    I need a form for creating and managing a reward-paying bounty smart contract using Ethereum (some links below to see similar Ethereum bounty projects/tools). I will provide the exact specifications to the freelancer(s) selected. Please share experience with Ethereum smart contracts and/or bounty projects. You should be familiar with openzeppelin, ER20, and security best practices. LINKS: [i...

    $15 / hr (Avg Bid)
    $15 / hr Oferta Promedio
    11 ofertas

    Developer needed to alter some aspects of a HLF1.4+ instance that will house music and track file usage.

    $1194 (Avg Bid)
    $1194 Oferta Promedio
    15 ofertas

    Hello, I want to understand how can i developp on the Copay app(bitpay) and their Bitcoin Wallet Service! I need a real blockchain expert..

    $264 (Avg Bid)
    $264 Oferta Promedio
    9 ofertas

    I want to build a block chain based web application using react js UI, Which interim implements the smart contracts.

    $437 (Avg Bid)
    $437 Oferta Promedio
    16 ofertas

    Hi- I want to test my network for hyperledger sawtooth and need a script that can be manually configured to run stress testing for hyperledger sawtooth using hyperledger caliper. I want a script like [iniciar sesión para ver URL] (and parameters in front the command) and I give different scenarios to test the sawtooth. please let me know if you can create a documentation and script for usi...

    $143 (Avg Bid)
    $143 Oferta Promedio
    4 ofertas

    We are looking for blockchain engineers - front end, back end, on and off chain - to consolidate my idea for NFT marketplace which will be a basis for EverythingStore in the emerging virtual reality space. For the first iteration, we will start with an app for NFT marketplace, putting some creative and IP assets on chain, allowing users to register them and sell and trade them.

    $36 / hr (Avg Bid)
    $36 / hr Oferta Promedio
    35 ofertas
    A Blockchain Project 2 días left
    VERIFICADO

    This is a Blockchain Project based on Sia Protocol. Anyone interested can message me to get more info

    $947 (Avg Bid)
    $947 Oferta Promedio
    8 ofertas

    If you are experienced in the blockchain development with Hyperledger Fabric and Nodejs, please apply to this job. When submitting the proposal, including the projects that you have worked with Hyperledger Fabric. I will discuss and share the details with the right candidate. Regards, PS: if you have experience, please answer the following questions. 1. What kind of network in creating network c...

    $587 (Avg Bid)
    $587 Oferta Promedio
    8 ofertas

    If you are experienced in the blockchain development with Hyperledger Fabric and Nodejs, please apply to this job. When submitting the proposal, including the projects that you have worked with Hyperledger Fabric. I will discuss and share the details with the right candidate. Regards,

    $662 (Avg Bid)
    $662 Oferta Promedio
    13 ofertas
    Blockchain Explorer -- 2 23 horas left
    VERIFICADO

    Hello, we are searching for a skilled developer in order to work on our Blockchain Explorer UI. Please save us time if you are not experienced!

    $200 (Avg Bid)
    $200 Oferta Promedio
    16 ofertas