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    Bot cryptocurrencies 6 days left
    VERIFIED

    I want to build a cryptocurrency bot for all currencies e for several exchanges example [url removed, login to view]

    $4275 (Avg Bid)
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    7 bids

    I would like to develop Dapp E-Wallet and website so I can send cyptocurrencies or fiat to my friends. Let me know if have done similar project so we can discuss further.

    $2159 (Avg Bid)
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    11 bids

    Hello. i need to premine my own coins. i don't know how to premine. i am looking a freelancer who can premine my coin. Thanks

    $436 (Avg Bid)
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    3 bids

    Looking for an experienced ghostwriter to take thoughts and ideas on the current blockchain industry and capital markets, and turn them into persuasive thought-leadership articles. Topics include pointing out hypocrisies in "decentralized" exchanges, democratizing ICOs, the new wave of ICOs coming in 2018, equity vs cash liquidity, and securities law; All of which should be geared toward persuading the reader to take on our point of view and funnel them to our tech platform. There are six articles in total to be written and released over the course of a month and a half. The writer will be provided with concepts, statements, outlines, references and other materials to help the writer become acclimated to this specific corner of the industry and our perspective. The writer should be honest and humble about their previous work and ability to write persuasively, and be fluent / native english speaking. Only freelancers located in the U.S. may apply. Project Type: Ongoing project You will be asked to answer the following questions when submitting a proposal: Have you written articles pertaining to the crypto / blockchain space? Please list references if so. What past project or job have you had that is most like this one and why? Which part of this project do you think will take the most time? Less than 30 hrs/week Hourly 1 to 3 months Project Length $$$ Expert Level I am willing to pay higher rates for the most experienced freelancers Skills and Expertise Marketing Communications Sales Writing Technical Writing

    $40 / hr (Avg Bid)
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    17 bids

    To make sure everybody fully understands what I am expecting I will explain it now in details and I hope you all read it to the end. You need to be experienced with blockchains, bitcoins and trading platforms. So , all i need now are 100$-500$ in btc . Im ready to pay here almost double for the amount you can provide me there. Also im ready to pay here first the milestone for sure ., then you can sent the coins to my wallet addres. Onc its done i will complete the project with all 5 stars feedback and good review !

    $213 (Avg Bid)
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    7 bids

    Hello, I've followed the following tutorial titled "How absolutely anyone can create a cryptocurrency in 60 seconds" exactly, but cannot 100% get it to work. In MyEtherWallet when I try to view the created Token it states "(error_21) Not a valid ERC-20 token" -- Please could you test the tutorial advising where the error is? How can I see the created token balance, and then access/send the created tokens to another address? The tutorial: [url removed, login to view] Any questions, please ask before placing bid

    $19 / hr (Avg Bid)
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    1 bids

    We are looking for ''Full stack Ethereum Blockchain Developer & or Developer Team''. The entire APPLICATION process will work totally depending on the Ethereum blockchain, as that is what most of the already deployed code does. NO TOKENS should be made at all because this would just complicate the process, and, by our current understanding & research does not contribute any advantages. At this stage, we are just looking for assessing potential developers, for this project. Don't bid, if you are not ready to provide a portfolio with previous work examples, that relate to ''Ethereum Blockchain Development''. All project details will be provided to qualified bidders, via IP agreement. ______________________________________________ Core Skills: Ethereum Blockchain (Truffle, Solidity, Embark, Populous (Python), Go-Ethereum, [url removed, login to view]) Some front-end coding for application process demonstartion - PHP/HTML5, Javascript/API. ______________________________________________ After receiving full project details from us, make a raw estimate & detailed timeline and cost proposal, per development stages. Time for making a proposal is 48 hours. Keep in mind this is not an ICO or similar money grab scheme, we need a fully functional transparent platform, this whole project concept has to be FULLY based on blockchain ability to deliver 'fair gaming' & 'scarecity' aspects. ______________________________________________

    $2596 (Avg Bid)
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    24 bids

    The token has been created and is fully functional, we need to develop smart contract for ICO and pre-ICO plus cabinet investor

    $1719 (Avg Bid)
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    22 bids

    As mentioned in the title, i need a simple faucet scrip for an altcoin. The script should only have a field to enter a wallet address and a submit button with captcha. The scrip needs to prevent abuse by restricting the number of payouts per day by detecting the IP address. It must be created in php. Design is not required. Simple as that. To be sure that you have read the requirements start your proposal by writting a word "Awesome" or your proposition would not be accepted!

    $41 (Avg Bid)
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    5 bids
    ERC 20 token 4 days left
    VERIFIED

    Develop and ERC 20 token , dettails about the token will released in private. This is just the first task then we are looking to do the smart contract and the back end.

    $1167 (Avg Bid)
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    18 bids

    I will require an expertise in research and writing a report on the blockchain, smart contract in relevant to the financial industry. $130

    $102 (Avg Bid)
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    32 bids

    Looking for blockchain dev , who will be able to assit to make new fork of cryptocurrency based on one of mining algo with Masternodes or, POS + Masternodes

    $1513 (Avg Bid)
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    37 bids
    Smart Contract ETH 4 days left
    VERIFIED

    Going to launch ICO, and need a freelancer to help creating smart contract in ETH. See our website at [url removed, login to view]

    $423 (Avg Bid)
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    21 bids

    Hello, We looking an expert in RPC and PHP / NODE.JS with good knowleadge of crypto currency for create an simple payment gateway for Bitcoin / Etherum, Ferrum coin and Numus coin, like this : [url removed, login to view] We want allow visitor of an website pay in, ferrum or numus coin and the owner of website or seller of product receive the payment. We will hire only expert with good review on this domain. Thanks you.

    $441 (Avg Bid)
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    23 bids

    Hello. i am going to make pow/pos masternode coin. i have changed only some parameters from basic coin. And i have installed nomp pool on vps server. when i mine coins in pow phase, nomp says that "Daemon instance 0 rejected a supposedly valid block. " All block was rejecting now. [url removed, login to view] says as follows: ERROR: CheckBlock() : first tx is not coinbase ERROR: ProcessBlock() : CheckBlock FAILED"

    $658 (Avg Bid)
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    3 bids

    Established live data streaming technology company seeking Solidity developer. We need an experienced Solidity developer with real-world experience using Solidity to create smart contracts to help on a large scale project. You will have the opportunity as a key member of our team to have a integral role in the development and design of our Ethereum-related solutions for several new products What we need from you: At least 3 years of exp building applications in object-oriented languages. Be up to speed on research papers on Casper, Plasma, and other consensus algorithms Experience developing large scale, highly available distributed systems as well as protocol design. In-depth understanding of Gas Price and its effect on transaction processing. Deep understanding of blockchain architectures and a clear understanding of how various platforms vary. Experience building smart contracts on Ethereum with Solidity, plus common security patterns and state-machine implementation. A growth mindset with the ability to receive and give constructive feedback on a regular basis. Expert level capabilities developing with APIs, Java, JavaScript, and different multi-tier distributed systems. Thrive on continual exploration and learning, and enjoy teaching the new things you have learned to others on the team. Experience defining and building Service-oriented architectures. Must be willing to be knee deep in code and teach industry best-practices for enterprise application design to the team. To be considered for this ongoing project, please answer all of the following questions: 1. Please provide us with a txt resume or link to one online that includes education and professional work experience. Do not provide contact information as that is against Upwork T&C. Also send your last 3 full time jobs or gigs if not listed on your resume 2. Tell us about your experience coding in java and solidity. Which projects have you worked on? Is there any code, projects, etc. you can submit to us to evaluate? Also, are you fluent in English - writing and speaking? 3. Solidity Q: How can you connect one geth client to another using IPC-RPC? 4. Solidity Q: What parts is the memory of an EVM divided into? 5. Quick java coding project: Write a Java program to compare one string to 2nd string, ignoring case considerations, outputting true or false for if they are the same or not.

    $37 / hr (Avg Bid)
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    20 bids

    Hello there, We need solidity developer who is having good experience in developing ethereum smart contracts. start your reply by mentioning "i read this" to make sure you really read my requirement. Thanks

    $169 (Avg Bid)
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    10 bids

    Hi, You will be doing the following: -A complete audit of ERC 20 Smart contract and provide an audit report -Find issues and fix How many smart contracts audits you have completed? Please provide sample audit report.

    $922 (Avg Bid)
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    By adding all of my transactions that the API returns, I can not find the result that I have in my balance. Example with IOTA: My balance is 281.64315651000 IOTA (return by /v1/balances) List of transactions (return by /v1/mytrades): [ {"Price": "0.0002993", "amount", "79.28790511", "timestamp", "1513796864.0", "type": "Buy", "fee_currency": "BTC", "fee_amount": "- 0.00002373" "tid": 133864150, "order_id": 6341795236}, {"Price": "0.0002993", "amount", "202.43439879", "timestamp", "1513796835.0", "type": "Buy", "fee_currency": "BTC", "fee_amount": "- 0.00006059" "tid": 133862789, "order_id": 6341795236} , {"Price": "0.0002201", "amount", "232.99614795", "timestamp", "1513617498.0", "type": "Sell," "fee_currency": "BTC", "fee_amount": "- 0.00005128" "tid": 129555018, "order_id": 6274176492}, {"Price": "0.000191", "amount", "233.22973822", "timestamp", "1513439162.0", "type": "Buy", "fee_currency": "BTC", "fee_amount": "- 0.00004455" "tid": 126976949, "order_id": 6203768149} ] The result of all amount is : 281,95589417000 IOTA When sub fee : 281,67254723065 IOTA (my cacul for fee is fee_amount/price) So the balance and the result of transaction are different of 0,02939072065 IOTA How find the exactly balance with transaction ?

    $137 (Avg Bid)
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    1 bids
    Crypto Price Prediction Game 1 day left
    VERIFIED

    A Cryptocurrency price prediction game where a user can bet on major cryptocurrencies like Bitcoin, Ether, Litecoin, DigitalCash and Monero and see where their prices go in the short term. The game results are recorded in cookies, so you will be able to continue from where you stopped last time. Demo: [url removed, login to view] My requirement: I want users to play this game by betting real money i.e BTC, ETH or any ERC20 token. Full source code of this game script can be provided.

    $1489 (Avg Bid)
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    15 bids

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