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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    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)

    $20 (Avg Bid)
    $20 Oferta medie
    2 oferte

    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)

    $10 - $30
    $10 - $30
    0 oferte

    traceability system where we include block chain.

    $20 (Avg Bid)
    $20 Oferta medie
    2 oferte

    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, [conectează-te pentru a consulta link...

    $1447 (Avg Bid)
    $1447 Oferta medie
    31 oferte
    Build a crypto app 9 zile left
    VERIFICAT

    I need a app done that uses trust wallet api to build the wallet. And allow more things that I will send in doc

    $2275 (Avg Bid)
    Acord de confidenţialitate
    $2275 Oferta medie
    43 oferte

    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 medie
    2 oferte

    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...

    $635 (Avg Bid)
    $635 Oferta medie
    15 oferte
    Block chain 5 zile left
    VERIFICAT

    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

    $1838 (Avg Bid)
    $1838 Oferta medie
    26 oferte

    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)
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    16 oferte
    Blockchain Expert Needed 5 zile left
    VERIFICAT

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

    $1231 (Avg Bid)
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    26 oferte
    Crypto CD Art 5 zile 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...

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    8 oferte

    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: [c...

    $15 / hr (Avg Bid)
    $15 / hr Oferta medie
    9 oferte

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

    $1194 (Avg Bid)
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    15 oferte

    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)
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    9 oferte

    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 medie
    16 oferte

    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 [conectează-te pentru a consulta linkul 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...

    $143 (Avg Bid)
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    4 oferte

    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)
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    35 oferte
    Build a DaPP 3 zile left

    I want to build a certificate issuing and authorising application on a public blockchain.

    $544 (Avg Bid)
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    17 oferte
    A Blockchain Project 3 zile left
    VERIFICAT

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

    $947 (Avg Bid)
    $947 Oferta medie
    8 oferte

    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)
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    8 oferte
    Desarrollar Sitio Web PWA -- 2 2 zile left
    VERIFICAT

    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)
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    27 oferte

    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 medie
    13 oferte
    Blockchain Explorer -- 2 1 zi left
    VERIFICAT

    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)
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    16 oferte
    Help me build a PVIX fork 23 ore left
    VERIFICAT

    Need someone who is able to write me a good tutorial of forking PVIX coin ! I don't want you to build the fork and give it to me. I wan't you to show me or write me each steps.

    $410 (Avg Bid)
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    8 oferte

    Hi, I looking for the best inovation solutions in blockchain for e- commerce. Pls contact on priv.

    $274 (Avg Bid)
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    10 oferte

    I need someone to help me setup my own mining pool, preferably Yiimp

    $176 (Avg Bid)
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    6 oferte

    I need you to develop some software for me. I would like blockchain network with multiple nodes software to be developed for Windows using Python.

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    2 oferte

    Olá, Ficamos felizes que você tenha se interessado pelo nosso projeto. Abaixo listamos algumas necessidades que consideramos essenciais para a contratação do freelancer e um pouco sobre o que será necessário. Necessitamos de 4 relatórios mensais, sendo 1 por semana. A boa noticia é que o freelancer terá serviço recorrente to...

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    4 oferte

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