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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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    41 trabajados encontrados, precios en USD
    Revamp my website 6 días left

    My team and I are building in a niche industry and we're looking for the right individual to help us fine time our website. Seeking a front-end developer familiar with blockchain technology, web3, and building on ethereum.

    $31 / hr (Avg Bid)
    $31 / hr Oferta Promedio
    14 ofertas

    Exchange 1. Cryptocurrency exchange with three(3) trading pair as follows: BTC-Others, ETH-Others, USDT-Others # BTC/ETH/USDT ---- 30 coin trading pair. 2. All market trading should look like genuine. To do that in API you should show other exchange data (as public can realize that this data is genuine trading ongoing) 3. In exchange user can see the last 24 hour total trade volume for every pa...

    $1428 (Avg Bid)
    $1428 Oferta Promedio
    9 ofertas

    Статья обьемом не менее 500 слов за 10$

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

    as I need MLM website using Ethereum Smart Contract

    $250 - $750
    Sellado
    $250 - $750
    8 ofertas

    I need you to develop a cryptocurrency coin like bitcoin. I do not want tokens on Ethereum.

    $8737 (Avg Bid)
    $8737 Oferta Promedio
    6 ofertas

    Need a Blockchain Developer...

    $595 (Avg Bid)
    $595 Oferta Promedio
    12 ofertas

    I have all the specs that I can send to the potential freelancer.

    $3039 (Avg Bid)
    $3039 Oferta Promedio
    7 ofertas

    looking for a experienced Blockchain develooer to perform the tasks of attached file.

    $1828 (Avg Bid)
    $1828 Oferta Promedio
    6 ofertas

    I want to build a digital economy based on supply chain (with inventory re-order system, point of sales menu)that fits any business,any industry have you done also ewallet/crypto exchange? for new account , the applicant need to hold his passport, make a selfi and upload with address proof , right? i want to branch one more step down for 'corporate user' in crypto exchange/ewallet, n...

    $3916 (Avg Bid)
    $3916 Oferta Promedio
    28 ofertas

    POA Blockchain has stopped. We like somebody to recover.

    $27 / hr (Avg Bid)
    $27 / hr Oferta Promedio
    4 ofertas
    Bitshares blockchain setup 5 días left
    VERIFICADO

    Hello We are looking for a developer that can help creating Bitshares blockchain network with its built in DEX. We need to setup a test blockchain to demonstrate the capabilities to our investors, and not a fully working live blockchain. Thanks in advance

    $1629 (Avg Bid)
    $1629 Oferta Promedio
    12 ofertas

    Note: Please apply only if you reside in Thailand Remitano: One of the largest peer-to-peer (p2p) cryptocurrency trading platforms in the world, currently serving users in more than 30 countries. The platform provides an escrowed p2p crypto marketplace allowing users to buy, sell and swap crypto and fiat easily and safely. Remitano is a market leader in the p2p platform space, featuring an intuit...

    $476 (Avg Bid)
    $476 Oferta Promedio
    4 ofertas

    I have a lot of issues. If you can fix them, I have a great long term opportunity for you.

    $526 (Avg Bid)
    $526 Oferta Promedio
    20 ofertas

    We are looking for some developer to develop a bitcoin client, with the feature to send fake transactions to the chain. All we need is for the transaction to be shown in the [iniciar sesión para ver URL], obviously we don't expect them to ever get confirmed! Required: - Amount field - Bitcoin address field. Can be a desktop (windows/linux) based solution, or on web.

    $466 (Avg Bid)
    $466 Oferta Promedio
    4 ofertas

    Build a Crypto Decentralized Exchange like kyberswap

    $650 (Avg Bid)
    $650 Oferta Promedio
    7 ofertas
    $6 / hr Oferta Promedio
    47 ofertas
    Looking for p2p exchange 4 días left
    VERIFICADO

    Hi i am looking for p2p exchange script kindly bid which have already project which is ready made. Thanks

    $1000 (Avg Bid)
    $1000 Oferta Promedio
    8 ofertas

    Building the network and showing on screen the network nodes, the channels with their balances, and the transactions using the testnet to show the behavior of the network (HTLC, Onion Protocol, etc...).

    $22 / hr (Avg Bid)
    $22 / hr Oferta Promedio
    6 ofertas

    Looking for experienced react developer to implement Ginses cryptocurrencies WebSocket to get and render real-time data: [iniciar sesión para ver URL] You should be experienced with [iniciar sesión para ver URL] as well.

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

    I am currently working on a website that requires me to have wallets stored on my servers, I need someone to walk me through creating a stable & secure bitcoind server. I need someone who has done this at least 5-10 times before. Thanks

    $149 (Avg Bid)
    $149 Oferta Promedio
    6 ofertas

    Hello I would like to modify Android application and Apple Wallet crypto currency and add other crypto currency in this wallet logo not the application the color add texts modify / IQ cash / SAFECAPITAL/ ZNN

    $364 (Avg Bid)
    $364 Oferta Promedio
    8 ofertas

    Hi, Can you build a blockchain backed bar-codes system for manufacturers to buy bar-code from (will have to be as per the international standards that clients can scan and get to details ), will have to have a client login on the website, admin login, and public portal to verify barcode and enrolled clients (per category,country, etc.)

    $209 (Avg Bid)
    $209 Oferta Promedio
    3 ofertas
    Blockchain security Expert 3 días left
    VERIFICADO

    We are looking for a talented person, who is specialized in blockchain security, to analyze our project, databases, flow, and fix all the security issues verifiable experience, and used to work singing NDA Knowledge on Solidity, Nodejs, Angular, AWS and all related languages and platforms

    $732 (Avg Bid)
    $732 Oferta Promedio
    25 ofertas

    a website for trading crypto currency

    $763 (Avg Bid)
    $763 Oferta Promedio
    4 ofertas

    I need you to write some articles.

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

    We are in the mid-process of developing a hardware based e-commerce site for a niche audience. We are seeking a dynamic individual who can bring value to our project with advanced foresight and vision. Our project consists of the following: -Web Applications (Developed, needs design upgrades) -Marketplace -4+ user Categories -Various dashboards and operations integration We are a lean startup, ...

    $1344 (Avg Bid)
    $1344 Oferta Promedio
    23 ofertas
    Voucher card bitcoin 2 días left
    VERIFICADO

    I want a site like this [iniciar sesión para ver URL] that obviously has all the backend administration with generations of codes, export of csv codes, generations of payment receipts, buy and sell commission fees, map locator. The submission process must be manual, not automatic. There must be notifications, a list of favorite wallets, the ability to activate deactivate 2fact, notification...

    $241 (Avg Bid)
    $241 Oferta Promedio
    7 ofertas

    I'm looking for someone who has conducted blocked in analysis before. I have no preference as to what tool you use, whether you something open source and free like [iniciar sesión para ver URL] or commercial like chainalysis. For example: Transactions on 2020-06-27 where Total Input is Between 10.1 and 10.5 I have about 10 queries that need to be done like that. I'm expecting to...

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

    I would like a python script/function that uses [iniciar sesión para ver URL] that will send a token to token transfer to the Kyber network on the ethereum blockchain. As an example: trade Dai for Weth via Python web3.py. function must contain: 1. inputs to build the transaction 2. sign transaction 3. send transaction Need to prove on the test net that it works with test data. thanks

    $81 (Avg Bid)
    $81 Oferta Promedio
    3 ofertas

    Hello, my plan to is to realize a python system which could generate a unique receiving bitcoin adress and check how much coins are transferred to this system. I'll create a bitcoin wallet using electrum [iniciar sesión para ver URL] import it in that tool and have functions to generate new receiving sub adresses (which belong to main adress) and check balance for each of that. The So...

    $199 (Avg Bid)
    $199 Oferta Promedio
    8 ofertas

    Create a new Account - This action will create a new account on the smart contract with the mentioned parameters. Also the address of the user should be saved which will be used for verifying the user in all other actions. a. Parameters i. FirstName (string) ii. LastName (string) iii. Age ( integer) iv. Gender ( enum) v. Address (Struct) 1. Address line12. Address line2 3. City 4. State 5. Pincode...

    $21 (Avg Bid)
    $21 Oferta Promedio
    4 ofertas

    Create a new Account - This action will create a new account on the smart contract with the mentioned parameters. Also the address of the user should be saved which will be used for verifying the user in all other actions. a. Parameters i. FirstName (string) ii. LastName (string) iii. Age ( integer) iv. Gender ( enum) v. Address (Struct) 1. Address line12. Address line2 3. City 4. State 5. Pincode...

    $127 (Avg Bid)
    $127 Oferta Promedio
    4 ofertas

    I need a profitable auto-trading app that works on [iniciar sesión para ver URL] via bitmex API. You must provide your own profitable trading strategy.

    $809 (Avg Bid)
    $809 Oferta Promedio
    16 ofertas

    We are looking for somebody who has experience in setting up the Iquidus Blockchain explorer, somebody who has done that already, who can change the logo, add/remove menu items, who knows how to sync the blockchain and get it up and running with our existing blockchain (Base BitcoinCore), route it to Port 80 so it can be accesed by our domain, VPS already exists [iniciar sesión para ver URL...

    $257 (Avg Bid)
    $257 Oferta Promedio
    13 ofertas

    Cryptocurrency Price Prediction using [iniciar sesión para ver URL] API By integrating Nomics API, should build price prediction website and corresponding desktop application for Window/Ubuntu/MacOS. [iniciar sesión para ver URL] Desktop application let user know predicted price by days, weeks, months and trade more effectively. Thank you

    $4449 (Avg Bid)
    $4449 Oferta Promedio
    46 ofertas

    I need an existing wordpress website to rebuilt.I need you to design and build a website for my edtech startup as per detailed wireframes, user friendly design, UI/UX Guidelines & extreme creativity. If this project is successful- other project related to our Edtech startup will be shared.

    $136 (Avg Bid)
    $136 Oferta Promedio
    11 ofertas

    I need to integrate coinpayment api to my website .and change fiat system to crypto

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

    I am in search of a content writer to write articles and posts on blockchain/crypto-related topics. Basic knowledge on the topic is a mandatory requirement. These are my requirements: High-quality posts such that minimal edits are required. Content should be 100% unique. No plagiarism. This is a must. It will be screened through premium software. No grammar/ spelling mistakes. Background research...

    $14 (Avg Bid)
    $14 Oferta Promedio
    27 ofertas
    Crypto Game -- 2 14 horas left
    VERIFICADO

    New crypto betting game Skills Required: for bidding on this project must have good experience in bellow skills 1- Blockchain (Wallet address generating, deposit and withdraw (Auto & Manual), provable fairness system, ...etc.) 2- MEAN/MERN Stack, Javascript, HTML5, CSS, ... 3- Security system 4- Anti fraud System 5- Front-end & Back-end 6- Database ...etc If you have profess...

    $4030 (Avg Bid)
    $4030 Oferta Promedio
    14 ofertas

    I need you to build a crypto exchange wallet and a token, on website and mobile app

    $482 (Avg Bid)
    $482 Oferta Promedio
    8 ofertas

    Hello there, I'm looking for a Job Portal like Naukri. Functions : 1. Job Seeker Login 2. Recruiters Login 3. Manager & Admin Panel Apart From this, I need powerful recruitment tools, resume builder, screening tools, Application tracking, Interview Scheduling, Online Assessment, Employer Branding and more.. Looking for someone who can sale their clone like Naukri Or Sketch it lik...

    $650 (Avg Bid)
    $650 Oferta Promedio
    7 ofertas