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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

    Se requiere desarrollar un sitio web para ofertar y contratar servicios. El backend debe desarrollarse sobre blockchain. Solo ofertar los que tengan experiencia comprobable en este tipo de desarrollos y capacidad de trabajo rápido y de alta calidad.

    $4044 (Avg Bid)
    $4044 Oferta Promedio
    51 ofertas

    Binance Chain wallet developer

    $4205 (Avg Bid)
    $4205 Oferta Promedio
    28 ofertas

    Hi we need a CryptoCurrency & Blockchain Developer for our company work there two phases of this project first we will do simple phase 1 then move to phase 2

    $164 (Avg Bid)
    $164 Oferta Promedio
    22 ofertas
    Get app source 5 días left

    I'd like to get the app source from google app store. App:[iniciar sesión para ver URL] If you know about it, please contact me

    $23 / hr (Avg Bid)
    $23 / hr Oferta Promedio
    5 ofertas

    We need JavaScript functions for creating EOS address, send EOS, RECEIVE EOS, and query EOS balance

    $101 (Avg Bid)
    $101 Oferta Promedio
    1 ofertas

    I need someone to install a fully functional waves paltform, a dex ( decentraliez exchange of [iniciar sesión para ver URL] and their gitub is [iniciar sesión para ver URL]) and if it’s necessarily to fork the waves blockchain No change no implementations, the design will be edited by one of our members, so just that there will be a new blockchain that will work over the dex, ...

    $297 (Avg Bid)
    $297 Oferta Promedio
    10 ofertas
    Bitcoin Blockchain text download 4 días left
    VERIFICADO

    Put all bitcoin Blockchain text in a single word document in order. I want to read all the text from the very first entry by Satoshi.

    $354 (Avg Bid)
    $354 Oferta Promedio
    10 ofertas

    Hi there, I am looking for an IoT solution on hyperledger fabric where I can store sensor data.(temperature, movement, fluctuations). The requirements are : 1- Store data collect from IOT device in a table 2- There is only one organization (everyone with an account can see everything) 3- for each event tag as critical trigger an event which send a notification (email) What is in scope: - build a...

    $2021 (Avg Bid)
    $2021 Oferta Promedio
    30 ofertas

    We want to implement confidential asset for a blockchain. Currently, the blockchain only supports confidential transaction, we need to add support for confidential asset, including issuing, reissuing and burning tokens. Candidates should be familiar with MimbleWimble protocol, ECC based crypto algorithm, surjection proof, bulletproof and solid c++ programming skills.

    $7309 (Avg Bid)
    $7309 Oferta Promedio
    35 ofertas

    Small project ( 2 to 3 pages ) about the idea of using Blockchain in the Egyptian banking sector , pros and cons and barriers .

    $34 (Avg Bid)
    $34 Oferta Promedio
    19 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...

    $189 (Avg Bid)
    $189 Oferta Promedio
    5 ofertas
    mining BTC production 2019 : 2025 2 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

    $26 (Avg Bid)
    $26 Oferta Promedio
    4 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 1 día 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.

    $18 / hr (Avg Bid)
    $18 / hr Oferta Promedio
    24 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.

    $502 (Avg Bid)
    $502 Oferta Promedio
    23 ofertas

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

    $820 (Avg Bid)
    $820 Oferta Promedio
    8 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

    $729 (Avg Bid)
    $729 Oferta Promedio
    29 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...

    $601 (Avg Bid)
    $601 Oferta Promedio
    3 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...

    $19 (Avg Bid)
    $19 Oferta Promedio
    3 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
    22 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.

    $936 (Avg Bid)
    $936 Oferta Promedio
    27 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...

    $13720 (Avg Bid)
    $13720 Oferta Promedio
    63 ofertas