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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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    37 trabajados encontrados, precios en USD

    We need to test the operation of the ERC20 (CRYPTOCASHBACK) CSSBACK token. We invite specialists on working with smart contracts on the ethereum and blockchain networks. 1. It is necessary to conduct an audit. 2. Check the network stability. (make several transactions with our tokens within the ERC20 network. 3. Identify network vulnerabilities, if any. For more information send your applications ...

    $570 (Avg Bid)
    $570 Oferta Promedio
    5 ofertas
    fiat to crypto exchange website 6 días left
    VERIFICADO

    hi im looking for a good coder who can create a fiat to crypto exchange site with kyc, verify, kraken api options, 3 or 4 currencies and some other features, no trading, no crypto swap or something like that.

    $1360 (Avg Bid)
    $1360 Oferta Promedio
    32 ofertas

    We are a building blockchain based applications for customers across different industries, we have already built in commercial and non profit applications. We want to build the following: We have an application to create with: - about 25 screens - responsive - backend functionality such as login, database inputs from users - blockchain registration of hashed data, we plan to use Ethereum. -...

    $15938 (Avg Bid)
    $15938 Oferta Promedio
    38 ofertas

    I have a requirement for an experienced Blochchain architect to review the concept and : 1. Advise on Go/No-Go decision 2. Provide feedback/improvements 2. Clarify the technology stack needed (so that a further development project can be started) 3. Design the architecture of an app and processes with "security" at the forefront and identity verification/management (must be of excepti...

    $146 (Avg Bid)
    $146 Oferta Promedio
    5 ofertas
    crypto exchange site 6 días left
    VERIFICADO

    Hello, im looking for a coder who can build a exchange website with different cryptocurrencies for me. the websites main function is only buy and sell direct to us, it shouldnt have a trading system or something like that. User register/login - deposit fiat or cryptocurrency - user can have balance on the site - if user want to buy cryptocurrency, should send fiat to site bank, and get cryptoc...

    $2658 (Avg Bid)
    $2658 Oferta Promedio
    74 ofertas

    I need you to write a research article on banking system,, online banks And compare it with blockchain

    $135 (Avg Bid)
    $135 Oferta Promedio
    31 ofertas

    we are looking for a strong coder who can buid a fiat exchange website with kraken API for user wallets

    $2628 (Avg Bid)
    $2628 Oferta Promedio
    48 ofertas

    Hey! I am looking for someone who can teach blockchain app development. Mainly app development on ethereum platform & on hyperledger. You should be available 2-3 hours a day to teach.

    $10 - $17 / hr
    $10 - $17 / hr
    0 ofertas

    i need to split my smart-contract (because it's too heavy for the gas limit), deploy in ropsten to test it, change the contract set in the interfaces that i have to test it, deploy it in main net and set the correct contract in the interfaces.

    $305 (Avg Bid)
    $305 Oferta Promedio
    1 ofertas

    i need to split my smart-contract (because it's too heavy for the gas limit), deploy in ropsten to test it, change the contract set in the interfaces that i have to test it, deploy it in main net and set the correct contract in the interfaces.

    $330 (Avg Bid)
    $330 Oferta Promedio
    1 ofertas

    We are a software company that leverages the power of blockchain technology for supply chain traceability. We want a very futuristic website that has more focus on the technology (we will build a different one for the companies who will use our software that is more simple). This will be our technical website where we also put our API documentation etc.; We are currently active in the meat industr...

    $287 (Avg Bid)
    $287
    3 participaciones

    We are looking for a technically skilled project manager and/or developer to create a Development Roadmap for a margin focused cryptocurrency exchange like BitMex/Bybit/BaseFex. The roadmap should be written in academic style, similar to a whitepaper and contain the complete process in detail from choosing the right hardware to launching to final exchange to the public, with all necessary milesto...

    $236 (Avg Bid)
    $236 Oferta Promedio
    10 ofertas

    I need someone who can install complete [iniciar sesión para ver URL] on my AWS server. You must have to have past experience about installing exchange. Exchange Liquidity Referral Multi language HOT/Cold Wallet erc20

    $238 (Avg Bid)
    $238 Oferta Promedio
    11 ofertas

    Looking for long term developer team for the new project. 1. Liquidity 2. 5 crypto Market - BTC,ETH,LTC,USDS, XRP 3. 20 ERC20 coins to be listed 4. New dark and light UI design (binance basic) 5. Admin Panel must have the listing function and adding market pair function. 6. Referral function needs to add and there should be manage function like 30%,50%80% as per admin mind. My budget is 200$ now...

    $1327 (Avg Bid)
    $1327 Oferta Promedio
    18 ofertas

    Before we move on please show me a demo of your work - centralized exchange platforms! We are looking perfect cryptocurrency exchange which you developed before so we can buy and launch by tomorrow!

    $725 (Avg Bid)
    $725 Oferta Promedio
    12 ofertas
    Blockchain Content Writer 5 días left
    VERIFICADO

    Must have Financial Domain Exp MUST HAVE WRITING EXP MUST HAVE TECHNICAL WRITING EXP MUST HAVE EXP WRITING ON BLOCKCHAIN, SECURITIZATION ETC TOPICS THIS IS LONG TERM ROLE PREFERRED FROM USA, CANADA OR INDIA

    $111 (Avg Bid)
    $111 Oferta Promedio
    11 ofertas
    Django Crypto wallet 5 días left
    VERIFICADO

    Hello, I am creating a wallet website who will help people to manage their crypto , the website is almost done but I need some help with the "admin"panel. People can create organisation with some department inside it , inside the organisation they can create admin department who will manage their wallet. And I have a few problem with it.

    $237 (Avg Bid)
    $237 Oferta Promedio
    27 ofertas
    Looking for Blockchain developer 4 días left
    VERIFICADO

    HI, freelancers. I am looking for an blockchain developer Project Scope: 1. Configuration Private Network based PoA. 2. Configruation Wallet Thanks.

    $20 / hr (Avg Bid)
    $20 / hr Oferta Promedio
    20 ofertas
    Stable coin 4 días left
    VERIFICADO

    Build stable crypto coin. Don’t mind a clone code

    $22 (Avg Bid)
    $22 Oferta Promedio
    4 ofertas

    Hello we need someone to make hot a fix for our Erc 20 based Eth token. Requirements 1- Have experience on ERC 20 based tokens and can show reference. 2- Knows how to use Putty, Winscp 3- Can teach us how to find some general bugs and errors and their fixes.

    $19 / hr (Avg Bid)
    $19 / hr Oferta Promedio
    13 ofertas

    Hi, I have a prototype in my mind that I want to test it through designing a system. If it works well, I want to add other functionalities by time. Thanks, Norris

    $20 / hr (Avg Bid)
    $20 / hr Oferta Promedio
    16 ofertas
    security of contract 3 días left
    VERIFICADO

    [iniciar sesión para ver URL] Hi, I want to have a security report form "Oyente". it should be done in 2-3 hours it is very simple because the contract in very simple. all u do is to follow the steps in the shared link. Max budget is 10 USD

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

    We are looking for a writer to create content for a few pages on a website. Our client has created a platform to help companies manage cap tables, IPO 409a valuations and other investments. For this project, you should feel comfortable writing about software, digital assets/currency, security tokens, cap tables, and/or financial investments. If you are interested, please respond with your bid pe...

    $893 (Avg Bid)
    $893 Oferta Promedio
    42 ofertas
    peatio exchange 3 días left

    I am looking for peatio open source cryptocurrency customisation a Linux/Ubuntu server expert who can do the following: - Set up Rubykube Peatio Cryptocurrency Exchange on [iniciar sesión para ver URL] and [iniciar sesión para ver URL] - Peatio Core - Peatio Trading UI - Environment - Barong - Crypto Daemons - Cryptocurrency (Bitcoin, Ethereum, etc) deployment to the Server [...

    $1754 (Avg Bid)
    $1754 Oferta Promedio
    9 ofertas
    I need a blockchain developer 2 días left
    VERIFICADO

    How are you I need a database blockchain developer I have an already developed Mysql database with PHP backend code I want to convert the Mysql database to Blockchain and connect the php backend code if you have experience with this field, please bid on my project

    $177 (Avg Bid)
    $177 Oferta Promedio
    28 ofertas

    I am going to build a website to integrate with etherum blockchain. You must have rich experience with etherum, erc20token. This project must be finished in 10 days. Please bid if you are definitely confident in this field and add *blockchain expert in your proposal at first. Thanks.

    $1513 (Avg Bid)
    $1513 Oferta Promedio
    22 ofertas

    Looking for a dev with STEEM blockchain knowledge. The dev must know how to integrate steemconnect to an igaming website & how to make it functional (play games using real STEEM, deposit/withdraw). Also, the dev must know how to implement a steem engine token to the platform. The token must be an integral part of the cashback system (a chosen percentage of the total wagers is returned to the...

    $180 (Avg Bid)
    $180 Oferta Promedio
    4 ofertas

    Looking for an online business platform with no physical engagement like delivery . It can be range of businesses from crypto exchange to practical apps or gaming apps . I will pick the best idea and developer depending on ROI and business popularity and the concept. Please kindly read the full deception of the project before biding.I'm looking for a pre existing business or a good busines...

    $2859 (Avg Bid)
    $2859 Oferta Promedio
    92 ofertas

    I'm looking for a program to perform multi-sign BTC and/or ECR20 token transactions offline and online It must support signing via hardware such as Trezor and Nano Ledger and AWS CloudHSM Java language preferred

    $181 (Avg Bid)
    $181 Oferta Promedio
    3 ofertas

    Hi - I am looking for an expert to build a network for me that I can store my data in Hyperledger burrow network. so your job is to build a network and api to store my random generated dataset into the hyperledger network- burrow. the link of hyperledger burrow is this:[iniciar sesión para ver URL] please let me know if you need to see my data and how they are being generated, it is just...

    $216 (Avg Bid)
    $216 Oferta Promedio
    10 ofertas

    Features: - sign up -- potential sign up/sign-in option via Google/Facebook - create invite: what, what, when, where - send/share invitation - recipient receives invite via email and/or text; recipient is prompted to sign in or sign up - recipient gives rsvp response: "yes" or "no", and to post an optional message to a message board - event host and invite recipients can also, ...

    $333 (Avg Bid)
    $333 Oferta Promedio
    40 ofertas

    I am looking for good developer to make a crypto exchange for me. There should be three types of roles 1. Super Admin 2. Different types of admin with roles 3. User Features I need. 1. Liquidity from Binance 2. Atomic Swap 3. Realtime and super fast order matching system 4. Hot Cold wallet 5. Admin can make unlimited pairs themselves 6. IEO features 7. Referral System 8. Fully Featured Modern Admi...

    $954 (Avg Bid)
    $954 Oferta Promedio
    16 ofertas

    i need an expert for install a block chain and configure it until the fisrt smart contract together on skype o similar video conference tool

    $221 (Avg Bid)
    $221 Oferta Promedio
    11 ofertas
    Need Blockchain expert 14 horas left
    VERIFICADO

    I am looking for someone who can develop stablecoin based on TRC20. Need experiences: - strong experiences in solidity - knowledge in stablecoin - TRC20 tokenization I will tell detail requirements in our interview. At the first of proposal, please add this word - xingshunda Before hiring, I will ask experiences and test skills for the best candidate.

    $179 (Avg Bid)
    $179 Oferta Promedio
    11 ofertas
    Need Solidity Expert 12 horas left
    VERIFICADO

    I am looking for someone who can develop stablecoin based on TRC20. Need experiences: - strong experiences in solidity - knowledge in stablecoin - TRC20 tokenization I will tell detail requirements in our interview. At the first of proposal, please add this word - xingshunda Before hiring, I will ask experiences and test skills for the best candidate.

    $219 (Avg Bid)
    $219 Oferta Promedio
    5 ofertas
    Developing mobile app 2 horas left
    VERIFICADO

    Hello, we need a mobile app like Revolut. This is a money transfer service app. Also, you need to have the blockchain knowledge . Key features 1. Crypto Wallets 2. Debit Cards 3. Cross Border Money Transfer (Fiat & Crypto) 4. Expense Tracker / Planner.

    $1551 (Avg Bid)
    $1551 Oferta Promedio
    98 ofertas

    I want to write a crypto arbitrage system. If you have existing code. I would like to buy. The price is determined by complexity of the software requirement.

    $340 (Avg Bid)
    $340 Oferta Promedio
    4 ofertas