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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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    29 trabajados encontrados, precios en USD
    mining BTC production 2019 : 2025 6 días left
    VERIFICADO

    Hello, I want a simple mining calculator of BTC coin production built on known difficulty of BTC eruption rates from year 2019 to 2025 with variable hash rate input. Thank you

    $28 (Avg Bid)
    $28 Oferta Promedio
    3 ofertas

    We are a Day trading school and we want to build our own trading platform ( Simulator ) where our student can train taking trades in the simulator ! -The platform we want to copy is ( Dastrader ) : please download the platform and see it before contacting us Link to download : [iniciar sesión para ver URL] -We will get Us stock market Real time data from IEX Could, this is the link of ...

    $536 (Avg Bid)
    $536 Oferta Promedio
    7 ofertas
    Update My ERC-20 Smart Contract 6 días left
    VERIFICADO

    At the moment our contract only offers 1 token holder, which can send tokens to others. We need to modify our smart contract that it allows everyone to send tokens. This function is already included in our smart contract, just need to run it.

    $17 / hr (Avg Bid)
    $17 / hr Oferta Promedio
    17 ofertas

    I am looking for help to create Java unit test for a project using Ethereum to send ETH. I use private chain in a closed environment but I have no idea how to get a transaction list of an address, while it’s easy to get it from Etherscan using testnet or mainnet.

    $533 (Avg Bid)
    $533 Oferta Promedio
    17 ofertas

    We need help with automatically creating wallet, sending and receiving & querying balance of Bitcoin Cash using nodejs

    $873 (Avg Bid)
    $873 Oferta Promedio
    7 ofertas

    Hello I need a ready online dapp coin game.. like ETH game. I can give you full info in PM

    $2590 (Avg Bid)
    $2590 Oferta Promedio
    18 ofertas

    We are looking for ERC1404 Developers that can also work for us with Web wallet and Website

    $724 (Avg Bid)
    $724 Oferta Promedio
    30 ofertas

    5 friends (Alice, Bob, Carol, Dave, and Emma) are participating in an egg-hunt game where they are looking for hidden plastic eggs. Each egg is worth a certain number of points, and the goal of the game is to accumulate one million points (or more). We would like a commitment scheme where each of the players can proof he/she has 1 million points from the eggs they found, while revealing zero knol...

    $108 (Avg Bid)
    $108 Oferta Promedio
    6 ofertas

    This position can be full-time/part-time but is based of a freelance contract. What does a sales representative do? You will offer every customer our services or products in order to boost top-line revenue growth, customer acquisition levels and profitability. Responsibilities Present, promote and sell products/services using solid arguments to existing and prospective customers Establish a...

    $500 (Avg Bid)
    $500 Oferta Promedio
    1 ofertas

    5 friends (Alice, Bob, Carol, Dave, and Emma) are participating in an egg-hunt game where they are looking for hidden plastic eggs. Each egg is worth a certain number of points, and the goal of the game is to accumulate one million points (or more). We would like a commitment scheme where each of the players can proof he/she has 1 million points from the eggs they found, while revealing zero knol...

    $69 (Avg Bid)
    $69 Oferta Promedio
    1 ofertas

    Hello , we are looking for help to list our token to exchanges like yobit , and get investors for the project . by the part of freelancer selection you might set the answers for the attached questionnaire to your quote .

    $98 (Avg Bid)
    $98 Oferta Promedio
    6 ofertas

    Require 3000 genuine leads for people who have a Blockchain need in Healthcare/Fin-tech/Supply-chain etc. The people can be CEO/CXO/COO or concerned persons who needs Blockchain Development service from us. It should be excel file having Name, Company name, Linkedin profile, Email ID, Phone No. If this work turned out to be good, I have lots of other work as well which can be discussed afterwords...

    $20 (Avg Bid)
    $20 Oferta Promedio
    2 ofertas

    We are looking for blockchain developer who already created or have no problem creating a simple wallet with the following functions in the next 24 hours: Listing prices Sending coin Create addresses Receive incoming coins Query transaction logs We need at least 2 coins: btc and eth for the next 24 hours. If you are proficient in blockchain and interested, please quote.

    $20 / hr (Avg Bid)
    $20 / hr Oferta Promedio
    21 ofertas

    Hello, we want to create cryptocurrency with our own blockchain. so for that if any experience team which already make something like this. so please share your past work with description. more detail we share in chat. Thanks.

    $1045 (Avg Bid)
    $1045 Oferta Promedio
    26 ofertas

    I want a new coin that enables users to create sub coins based on my blockchain. The result will be a coin that is compatible with my coins wallet. Any coin created from my chain will also be able to be viewed in stored in the main chains wallet. They can also crate their own wallet. Fees from transactions will be in the own coin not in main coin as with ethereum. When developing the coin they wil...

    $13649 (Avg Bid)
    $13649 Oferta Promedio
    61 ofertas
    Create an altcoin 4 días left
    VERIFICADO

    Please quote for creation of an alt coin with block

    $651 (Avg Bid)
    $651 Oferta Promedio
    15 ofertas

    I some Asic miners with 18 TH/s speed . I'm using popular pools but having problem with difficulties when it increases . I was wondering if there is anyway to increase the hash-rate with software based methods or if I make my own pool ?

    $436 (Avg Bid)
    $436 Oferta Promedio
    5 ofertas

    We are looking for a quote to make changes to an existing Dapp on the Tron mainnet. We will require a Unity Dev with Blockchain experience. We have attached a Business plan in the File below. Look forward to hearing from you. Cam

    $574 (Avg Bid)
    $574 Oferta Promedio
    7 ofertas

    I need a senior blockchain developer i need to develop a crypto dapp game

    $861 (Avg Bid)
    $861 Oferta Promedio
    7 ofertas

    Por favor, regístrate o inicia sesión para ver los detalles.

    Acuerdo de Confidencialidad

    - audit and improve our TRON smart contracts for our game - Link smart contract API to our front end (built) - Link Tronlink to our front end - deploy smart contracts No not contact me if you don't understand the above items

    $8028 (Avg Bid)
    $8028 Oferta Promedio
    25 ofertas

    Hey, i need someone who is familiar with POA sokol. To check my ethereum smart contract project and see why the reductions arent correct.

    $193 (Avg Bid)
    $193 Oferta Promedio
    8 ofertas

    - audit and improve our TRON smart contracts for our game - Link smart contract API to our front end (built) - Link Tronlink to our front end - deploy smart contracts No not contact me if you don't understand the above items

    $6847 (Avg Bid)
    $6847 Oferta Promedio
    26 ofertas

    [I would like to pay for the performance fee without making a request for the start fee.] Although it is incomplete as a function, The basic trading code is complete. The predecessor is probably writing code in C#. Furthermore, I hope for the modification for the function addition of trade, and the implementation of BTC's automatic collection function using API. The first thing you need to...

    $2605 (Avg Bid)
    $2605 Oferta Promedio
    19 ofertas

    Необходимо создать криптовалютный обменник по типу P2P, то есть сайт будет в роли площадки которая сводит покупателя и продавца и берет с них процент, криптокошельки должны быть свои, без всяких сторонник сервисов, то есть на отдельном сервере поставить ноду и генерировать под каждого нового пользователя уникальный кошелек или же под каждую новую сделку новый кошелек, по сути не важно. На сайте до...

    $2687 (Avg Bid)
    $2687 Oferta Promedio
    8 ofertas

    I need a responsive website. I would like it designed and built.

    $6 / hr (Avg Bid)
    $6 / hr Oferta Promedio
    43 ofertas

    I need a new website. I need you to design and build a crypto coin and also integrate into a new Exchanger.

    $721 (Avg Bid)
    $721 Oferta Promedio
    15 ofertas

    We are participating in blockchain summit Singapore on 25July 2019. I need someone to represent our exhibition boot together with other team members. Your responsibility is to create repo and explain the project to the visitors. White paper will be provided to you in advance to read and understand about the project details. Projects related to blockchain and cryptocurrency. You should be profici...

    $20 / hr (Avg Bid)
    $20 / hr Oferta Promedio
    14 ofertas