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Bitcoin is a crypto currency, with the creation and the transfer of the bitcoins being based on a protocol that does not depend on the central authority. The coins can be transferred through computers or through smartphones and related devices, without the necessity of having a financial institution as an intermediate. This concept was established by Satoshi Nakamoto in 2008 and it was geared towards the world of electronic cash systems. If you understand more about this topic on a professional level, then you have a better chance to enjoy the advantages of being a freelancer at Freelancer.com.

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    40 仕事が見つかりました。次の価格: USD
    $35 / hr 平均入札額
    31 入札

    I want to create a script that compares crypto currency prices on a exchange - by - exchange basis. I want to see the profit in%. (compare than index price) My site is made by WordPress and I want to make it as follows. exchange price [ログインしてURLを表示] price [ログインしてURLを表示] or upbit or coinone [ログインしてURLを表示] or okex [ログインしてURLを表示] or Coinex [ログインしてURLを表示] thailand [ログインしてURLを表示] or japan exchanges...

    $204 (Avg Bid)
    $204 平均入札額
    16 入札

    Since upgrading to ethOS 1.3.3 when I try to connect to our pool using stratum I get the error. "Could not subscribe: code:-3 message:Method not found" We need to be able to connect with new versions of ethOS 1.3.3. I don't know what changed. Did stratum finally standardize? Can the pool be modified to work with stratum now? I did not see anything about stratum in the release ...

    $202 (Avg Bid)
    $202 平均入札額
    2 入札

    im looking for a similar to onehash , if you know about this how it works send me proposal on how and what function you can implement. if you got no idea how onehash betting platform works do not waste my time . no time waster here. .................................................................................... OneHash is a Bitcoin gambling platform providing mutual betting in sports bet...

    $2976 (Avg Bid)
    $2976 平均入札額
    16 入札
    revise node.js arbitrage bot 6 日 left
    認証完了

    i need a cryptocoin bot that can handle arbitrage between cryptoexchanges. recently a developer worked for this project but he had health issues and left the project Bot %60 finished but not completed, frontend is nearly complete, all codes are in Digital ocean droplet server and it works partly, have 3 cryptocoin exchanges and 15 coins integrated. - job description and details are here [ログインしてURL...

    $369 (Avg Bid)
    $369 平均入札額
    7 入札
    $507 平均入札額
    13 入札
    Bitcoin Vendor Shop for TOR 6 日 left
    認証完了

    I want btc vendor shop where i can sell stuff 100% anonymous hidden on tor. You will setup the website and hosting on TOR.

    $133 (Avg Bid)
    $133 平均入札額
    5 入札

    Please look at the attached document and contact us to discuss the work! The exchange needs to built in C++. You need to know security, block chain and how to work with it. Up to 10 market parings (BTC, ETH, LTC, XRP, BCHSV and, USDC or other ERCtokens / List an option for favorites pairings for customers.) May add more coins Connecting the 10 API from foreign Exchanges such as: Binance / [ログイン...

    $3457 (Avg Bid)
    $3457 平均入札額
    38 入札
    Cryptocurrency Arbitrage Bot -- 3 5 日 left
    認証完了

    I need some Python developer experience with CCXT to help me finish automatic buy of my arbitrage cryptocurrency bot.

    $23 / hr (Avg Bid)
    $23 / hr 平均入札額
    4 入札
    Ethereum - Solidity help 5 日 left
    認証完了

    I need help with a lottery dapp -can I generate an array of 15 random numbers to create a ticket for the buyer -generate 40 random numbers for the game round. Can I return a dynamic array with all the numbers and does it cost a lot of gas to call the function to generate each of every time

    $17 (Avg Bid)
    $17 平均入札額
    2 入札

    i need a cryptocoin bot that can handle arbitrage between cryptoexchanges. recently a developer worked for this project but he had health issues and left the project Bot %60 finished but not completed, frontend is nearly complete, all codes are in Digital ocean droplet server and it works partly, have 3 cryptocoin exchanges and 15 coins integrated. - job description and details are here [ログインしてUR...

    $473 (Avg Bid)
    $473 平均入札額
    16 入札
    Customized Cryptocurrency Exchange 5 日 left
    認証完了

    Hello, We are interesting in launching a Cryptocurrency Exchange feature our own ERC-20 listings that would not be listed on our exchanges. As such we need our own Order Management System that could support our own network of market makers. We also need to support some of the major coin trading pairs and integrate with a major exchange for liquidity. However, this is our secondary requirement, n...

    $16319 (Avg Bid)
    $16319 平均入札額
    40 入札

    developer required to teach basic things on bitcoin. you should know and have developed crypto currency. I will take one hour session to clear some logics and tech support. thanks

    $1816 (Avg Bid)
    $1816 平均入札額
    4 入札

    A coin with its own block-chain (not a ico!) Ripple like: - Fast and fully anonymous - All coins are pre mined - You provide me with a panel that i can set coin symbol, Name, Amount of total coins and ect.. - you train me to any future maintenance if there is any. - You provide me with an explorer to the coin block chain. - Wallet (Desktop not Cloud) for pc windows that can store also other coins.

    $1206 (Avg Bid)
    $1206 平均入札額
    23 入札

    I want to develop virtual currencies like Bitcoin. I want proven sources that have been developed. (Full Solution)

    $14962 (Avg Bid)
    $14962 平均入札額
    32 入札

    Hi my company is about to start an ICO within 2 weeks (30th of November 2018) I need to list my ICO on token exchange platforms, such as - [ログインしてURLを表示] - [ログインしてURLを表示] - [ログインしてURLを表示] - [ログインしてURLを表示] - [ログインしてURLを表示] - [ログインしてURLを表示] I need support to do this, with a special attention over the issue of KYC and AML

    $3041 (Avg Bid)
    $3041 平均入札額
    13 入札

    I want to start a company for ASIC mining chips...need engineers and software developers.

    $1724 (Avg Bid)
    $1724 平均入札額
    13 入札

    I am looking for someone who can come up with an idea to increase the trading volume on a cryptocurrency exchange.

    $137 (Avg Bid)
    $137 平均入札額
    7 入札
    $6174 平均入札額
    18 入札

    I want to develop a proof of stake cryptocurrency with masternode probably a fork of PIVX including a qt wallet and develop an API for merchant to receive payments.

    $921 (Avg Bid)
    $921 平均入札額
    18 入札

    We are looking to purchase source code for an ICO platform. We are not interested in developing a platform ourselfes, we just want to buy source code for a platform, that is already finished and fully functional.

    $1454 (Avg Bid)
    $1454 平均入札額
    36 入札
    Master Node Complete Project! 3 日 left
    認証完了

    Master node coin Developer! I'm looking blockchain developer who can fork DASH. You must have to have experience! Submit your previous project link! Without a link, I won't reply to your message whatever you submit!

    $1343 (Avg Bid)
    $1343 平均入札額
    25 入札
    Cryptocurrency Arbitrage Bot -- 2 3 日 left
    認証完了

    I need some Python developer experience with CCXT to help me finish automatic buy of my arbitrage cryptocurrency bot and speed it 40%.

    $143 (Avg Bid)
    $143 平均入札額
    3 入札

    I'd like to build a trading engine with using REST API. These are the optional api service what I am thinking of. - [ログインしてURLを表示] - [ログインしてURLを表示] - [ログインしてURLを表示] I wish to develop a trade engine based on rest api preferrably, I have to develop and plug/play existing module to existing backend system. Trading Engine Specs - Node.js as api server - Mongo as database Please feel free to ...

    $700 (Avg Bid)
    $700 平均入札額
    15 入札

    I need a develop to develop a cryptocurrency exchange website for me details will be sent to you via inbox

    $997 (Avg Bid)
    $997 平均入札額
    33 入札
    Bitcoin/blockchain vendor shop 3 日 left
    認証完了

    I need a vendor shop that uses PGP encryption, bitcoin block chain. I can list items for sale and people may purchase via bitcoin. Then host this on the tor where i can enter onion URL and access website. Admin features and client feature aswell.

    $201 (Avg Bid)
    $201 平均入札額
    14 入札

    I've been tasked with writing a detailed piece for a major online publication on Bitcoin and cryptocurrency users, and am seeking two current users of Bitcoin for interview. Pay is fixed at 100USD via Freelancer for successful candidates. Interview is in three parts; 1) Qualifying questions 2) Preliminary discussion 3) Main interview task Questions will include ones similar to this; Do you...

    $137 (Avg Bid)
    $137 平均入札額
    14 入札

    I want to build smart contract of erc 20 token with all pre mined token.

    $1714 (Avg Bid)
    $1714 平均入札額
    14 入札

    The PoC is already developed for a healthcare organisation, the authority of data provided by the patient is to be set. Only who has worked on Hyperledger fabric shall bid.

    $31 (Avg Bid)
    $31 平均入札額
    1 入札
    Mining machine 1 日 left

    from Antminer A3 to ObeliskSC1 firmware version update , or A3 to Lyra or quirk or Scrypt , as successful to do if you can than please do as soon as possible

    $9166 (Avg Bid)
    $9166 平均入札額
    2 入札
    Mining machine 1 日 left

    from Antminer A3 to ObeliskSC1 firmware version update , or A3 to Lyra or quirk or Scrypt , as successful to do if you can than please do as soon as possible

    $5472 (Avg Bid)
    $5472 平均入札額
    4 入札

    Quisiera Vender mi proyecto ya Finalizado de una App que ayuda a vender o comprar BTC ya Operativo envia Notificaciones en base de los parametros que se le coloquen, Solo necesito saber si hay alguna persona interesada para Venderlo o Asociarnos.. Es importante señalar que este Sistema ya esta en uso Por un grupo de Trader lo cuales comprar suscripcion por el uso

    $438 (Avg Bid)
    $438 平均入札額
    4 入札

    I need a fully secure Cryptocurrency exchange open for customers in India with a few currencies already listed on it and should be equipped with full KYC.

    $656 (Avg Bid)
    $656 平均入札額
    16 入札

    Looking for a core wallet system for Ethereum, XRP, and ERC token system. The wallet will need to generate new address for users and it must be installed and tested correctly with no security flaws. It would be preferred if you know C++. and have solid security background.

    $413 (Avg Bid)
    $413 平均入札額
    14 入札

    The requirements are been attached and bid only after reading the document ! The entire project is been already opensource where you need to run the opensource git and then customize few changes. *** Again Bid only those whom really can work on this ***

    $206 (Avg Bid)
    $206 平均入札額
    8 入札

    Hi, I thus need only experts who have already with with mining pools ! The requirements are been attached and bid only after reading the document ! The entire project is been already opensource where you need to run the opensource git and then customize few changes. *** Again Bid only those whom really can work on this ***

    $18 / hr (Avg Bid)
    $18 / hr 平均入札額
    7 入札
    Cryptocurrency Arbitrage Bot 13 時間 left
    認証完了

    I need some Python developer experience with CCXT to help me finish automatic buy of my arbitrage cryptocurrency bot.

    $53 / hr (Avg Bid)
    $53 / hr 平均入札額
    20 入札

    I'm looking for DAG expert. will discuss more via FL.

    $1333 (Avg Bid)
    $1333 平均入札額
    8 入札

    I need someone to help with gitian builder. It keeps failing with an miniupnpc checksum error. I need someone to fix my code so that i dont get this error and to fix any other errors that i might get after the miniupnpnc thing.

    $23 (Avg Bid)
    $23 平均入札額
    1 入札
    Create a new Crypto Currency 39 日 left
    認証完了

    Create a new Crypto Currency by Improving open source existing codes and ensure its reliability to connect to external environments, and implement sepcific specs and deliverables and high level security.

    $3436 - $5727
    特集 シール NDA
    $3436 - $5727
    59 入札