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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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    30 trabajados encontrados, precios en USD

    Create simple script that makes simple and automatic arbitration between binance and poloniex. I only have $ 100 for this service. Please do not accept the job if you cannot do it for $ 100.

    $207 (Avg Bid)
    $207 Oferta Promedio
    9 ofertas

    Good day, i have been working on a python code that can take an address and map out all the sender and recipient addresses. I am trying to use https://blockchain.info/rawaddr/&address as the api. I have majority of the code just need someone to help fix the errors. I am not too experienced in python and code is non working and patched together. If interested I will send the code I have. Do not...

    $64 (Avg Bid)
    $64 Oferta Promedio
    7 ofertas

    We are working with the City of London and Renewable energy resource providers in the UK to create a cost efficient Bitcoin Mining Farm. We are looking for experts in the Bitcoin industry who have expertise at setting up and running a Bitcoin Mining Farm. We are looking for about 4 experts to be part of the panel who advice our company The Bitcoin Mining Company Limited based in London England...

    $33 / hr (Avg Bid)
    $33 / hr Oferta Promedio
    13 ofertas

    Hello, We are working on the platform where we are inserting offline transaction into the permission-based blockchain using zero-knowledge proof. We are looking for a developer who has good knowledge of react-native, Also, the person should have blockchain development knowledge. We are only looking for an individual. Requirements: - Should have knowledge & experience of permission blockchai...

    $33 / hr (Avg Bid)
    $33 / hr Oferta Promedio
    40 ofertas
    Smart contract 5 días left

    I need a ​smart contract for an ICO based on ERC20 token

    $269 (Avg Bid)
    $269 Oferta Promedio
    14 ofertas

    I want an android app which will show current crypto currency price in notification bar similar to this app Bitcoin checker link here [iniciar sesión para ver URL];hl=en_IN for three exchanges bittrex binance and bitfinex

    $111 (Avg Bid)
    $111 Oferta Promedio
    10 ofertas
    USDT Omni HD Wallet 5 días left
    VERIFICADO

    1. Generate many usdt address for deposits in a simple web application 2. All usdt are consolidated in one main address for transfer to other usdt address 3. Verify deposits completion for the many usdt addresses

    $1207 (Avg Bid)
    $1207 Oferta Promedio
    10 ofertas

    We have a good project with real product. now we are looking for a good person who are famous in Blockchain and Crypto world to be a member of team, we need their good profile in Twitter or Linkedin. Please contact if you are the person who can be like this. Thanks!

    $4033 (Avg Bid)
    $4033 Oferta Promedio
    30 ofertas

    Want a very simple exchange via smart contract and extremely simple interface. The project is one token to be exchanged with ethereum. Price of token is always 0.01eth the price can’t be changed but people will list tokens to sell or buy on order book and you can take those orders. The price is the same but people can list % over or under the price only within 5% of the price of 0.01eth (ove...

    $254 (Avg Bid)
    $254 Oferta Promedio
    6 ofertas

    Dear Freelancer, We are looking for an trading algorithm which via API can be connected to cryptocurrency exchanges. The software will be used for MarketMaking services. Please only experienced freelancers with a track record.

    $34 / hr (Avg Bid)
    $34 / hr Oferta Promedio
    15 ofertas

    Hi, I am Sumanth, I am doing Masters at a UK based University, I need a blockchain developer for my Idea of my thesis, I have all the background knowledge of my project but I am lacking at the programming skills as I am not from the programming background. My project is about energy transactions with blockchain

    $87 (Avg Bid)
    $87 Oferta Promedio
    7 ofertas
    Add 3 features to core php wesite 4 días left
    VERIFICADO

    1) In existing assigning plans page, let Admin can assign plan without time limitation . 2) Increase the newsletters number can Admin send by configuring stmp. 3) Display specific concerned pages parts ( instead of top page ) when user redirects. 4) Create (connect with us) link pages to facebook, tweeter and google

    $105 (Avg Bid)
    $105 Oferta Promedio
    65 ofertas

    I am looking for a professional Whitepaper for my project. 10Pages+ with good market research, included some economics with references and Charts. Road Map etc. I will give you around 30% of the info I already have with an overview of the product. Knowledge of Token sales important and how to include it in the Whitepaper. High-level Knowledge of following is needed: - Blockchain - Ethereum - S...

    $194 (Avg Bid)
    $194 Oferta Promedio
    29 ofertas
    Need a ICO platform/website -- 2 4 días left
    VERIFICADO

    Hey! I have a ERC20 token and need a ICO platform for it. In your bid please provide examples of how it could look from your previous jobs with ICO platforms/websites. I will only hire you if you have experience with ICO platforms. Show me examples of your previous work for this kind of project when you bid. The platform/website should include an admin panel and features like buying my token.

    $613 (Avg Bid)
    $613 Oferta Promedio
    10 ofertas

    I have a a blockchain derived from GoChain. It adds enhanced transaction features. Basically it adds a small structure on to every transaction. Need assistance on finalizing & testing of new feature as well for someone to write me a bash script or small golang tool for configuring a new blockchain including the Genesis block. it has to ask for each of the configuration parameters with descr...

    $480 (Avg Bid)
    $480 Oferta Promedio
    13 ofertas

    mature crypto exchange source code [iniciar sesión para ver URL] have demos

    $1089 (Avg Bid)
    $1089 Oferta Promedio
    9 ofertas

    Build an e-currency exchange site like [iniciar sesión para ver URL] in php framework. It should be 100% secure.

    $609 (Avg Bid)
    $609 Oferta Promedio
    18 ofertas

    hello, i need a Telegram investment bot of single coin, if you have ready-made i will take now, Don't Put Placeholder Price. Thanks

    $97 (Avg Bid)
    $97 Oferta Promedio
    4 ofertas
    Content Writers 1 día left

    Looking for experienced content writers...1st Preference for Pune writers.

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

    Hi all, As subject states. I´m running bitexchange script (cryptocurrency exchange) . Need help with adding new coins . (website link [iniciar sesión para ver URL]) So far there are listed BTC, ETH, XRP, XLM, ...I need to add few coins more. Please send me your proposals and your bid. Lowest one with a good experience wins of course. This project will require: Add new coin...

    $160 (Avg Bid)
    $160 Oferta Promedio
    5 ofertas

    Looking for long term blockchain developer who can modify exchange script and crack the code. Change UI Develop Liquidity BO T and Publish on my hosting! I'm willing to pay you 100$ - 200$ and I'll give you my script free of cost. (Value of script 1K)

    $221 (Avg Bid)
    $221 Oferta Promedio
    17 ofertas

    Need to Modify a Linux based device using putty and SSH tunnel . small changes .

    $14 (Avg Bid)
    $14 Oferta Promedio
    14 ofertas
    Design a trading site. 1 día left
    VERIFICADO

    I need a new website. I need you to design and build it, that’s works like [iniciar sesión para ver URL] with additional coins.

    $594 (Avg Bid)
    $594 Oferta Promedio
    39 ofertas
    Block chain 22 horas left

    Build a block chain ledger. Build business to business payment system.

    $31851 (Avg Bid)
    $31851 Oferta Promedio
    21 ofertas
    Test the project 20 horas left
    VERIFICADO

    Hi I have implemented a nebulas blockchain based TLS notary service to tackle the Man-in-the-Middle attack on local host but i am unable to think on how to evaluate it and its required urgently can you help me out with it ?

    $146 (Avg Bid)
    $146 Oferta Promedio
    9 ofertas

    We are a new blockchain startup that needs a team of professional Web Developers with serious Blockchain development experience. We need people with true experience working with: ✓ Blockchain; ✓ Smart Contracts (Ethereum platform, ERC20 standard); ✓ Bitcoin, EOS, Litecoin (and other famous crypto platforms); ✓ Cryptocurrency Exchanges and Wallets. Preference will be given to a person with experi...

    $41 / hr (Avg Bid)
    $41 / hr Oferta Promedio
    37 ofertas

    Candidate should be talented in encryption on IPFS.

    $29 / hr (Avg Bid)
    $29 / hr Oferta Promedio
    24 ofertas

    We need top of the line developers to build a full-stack decentralized cryptocurrency exchange and spot market. The developers should have the knowledge of blockchains and the decentralization world especially with context to cryptocurrencies such as how transaction occur on blockchains, what are wallets, how trading happens on exchanges and other relevant concepts and should be good in javascript...

    $10592 (Avg Bid)
    $10592 Oferta Promedio
    18 ofertas

    I need a network where different pharmacy databases connect to measure how many products of a particular brand were bought by the same user and thereby give them a discount. The information that we are gonna use are CPF (brazilian ID), bar code, time stamp, number of previous products acquired and pharmacy that sold the product. This information must be in accordance with GDPR and guarantee the an...

    $790 (Avg Bid)
    $790 Oferta Promedio
    15 ofertas
    Provably Fair Developer Needed -- 3 Finalizado left
    VERIFICADO

    I need a Provably Fair Developer for a very urgent Provably Fair project. The gambling verification project is for crypto gambling websites and it will be developed as a Chrome Extension. ONLY bid if you have done one or two projects with Provably Fair. Include a link to the Provably Fair project in your bid. PLEASE ANSWER THIS QUESTION IN CHAT: Q :: How can players verify their bet balances ...

    $534 (Avg Bid)
    $534 Oferta Promedio
    14 ofertas