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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.

Bitcoin has its own technical part that needs to be addressed by professionals. If you are one of them, then you should be on a platform that ensures the consistency of job posting by clients. When working as a bitcoin freelancer at Freelancer.com, you will have access to many of the jobs posted by clients from all over the world and bid on those that are within your professional level. There is too much to enjoy while working at the leading freelancer platform online, including getting paid at rates that your services deserve, giving you the encouragement you need to keep on working on more Bitcoin projects.

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    39 Gefundene Jobs, Preise in EUR

    Requirements: 1) Must have solid experience in web and software development especially C++(I DO NOT WANT PHP WORK.) 2) Must have a solid background in Security and Cyber Security. 3) Must know how to create full nodes for the coins and tokens listed and offer liquidity solutions. 4) This is only for experienced firms and long term work will be offered! Pay will be for this project and 4 months...

    €2316 (Avg Bid)
    €2316 Gebot i.D.
    26 Angebote

    Hi I need to be listed in 1 preferably 2 exchanges for my coin (not token) and would like to be listed in one from the list here: [Zur Anzeige der URL Anmelden] if possible and without listing fee. Can you help with this?

    €187 (Avg Bid)
    €187 Gebot i.D.
    7 Angebote

    This project is only for senior experts who have proven experiences in Android&iOS wallet of several crypto assets. Need to provide several digital assets like BTC, ETH, Monero, USDT Send, Receive, Exchange between assets functions to be implemented Need import/export private key Backup wallet function need Hybrid is preferred Please describe about decentralize and centralize experiences about...

    €3809 (Avg Bid)
    €3809 Gebot i.D.
    42 Angebote

    I am looking for support in designing a peer to peer energy system that utilises blockchain and the lightning network. Needs to be scalable to 1 billion transactions per second. This is just a design and proof of concept

    €710 (Avg Bid)
    €710 Gebot i.D.
    19 Angebote

    We have a new cryptocurrency exchange we are launching to the public soon. We need a custom market maker bot that can execute high frequency trades, close spreads on assets, and maintain liquidity across all assets. We are only interested in interviewing freelancers that have vast experience and knowledge in the high frequency trading, liquidity aggregation bots, and market making bots that can ...

    €2196 (Avg Bid)
    €2196 Gebot i.D.
    21 Angebote
    partners (ONLY) in Partnership 4 Tage left
    VERIFIZIERT

    I am looking for partners for a new Crypto project create wallets, create token, pre sale site (ICO) we can discus about your implication possibility

    €1061 (Avg Bid)
    €1061 Gebot i.D.
    15 Angebote

    I need some to help me deploy ethereum smart Contract asap, the code is ready, all you need is to deploy it. Nothing much!

    €42 (Avg Bid)
    €42 Gebot i.D.
    11 Angebote

    This project is only for senior experts who have proven experiences in mobile wallet of several digital assets. Need to provide several digital assets like BTC, ETH, Monero, .. Send, Receive, Exchange between assets functions to be implemented Need import/export private key Backup wallet function need Provide multi Language Hybrid both possible

    €3626 (Avg Bid)
    €3626 Gebot i.D.
    45 Angebote

    Looking to hire someone who is familiar with c++ and blockchain development to prepare a Qt creator dev ready environment for [Zur Anzeige der URL Anmelden] on Windows 10 VM. *MY BUDGET IS 40 AUD*

    €25 / hr (Avg Bid)
    €25 / hr Gebot i.D.
    15 Angebote

    Looking for a crypto currency exactly similar to PIVX Coin. Need Masternode ROI and Independent blockchain. Only who did similar kind project please bid. Time wasters please stay away.

    €995 (Avg Bid)
    €995 Gebot i.D.
    19 Angebote
    Crypto trading platforms 4 Tage left
    VERIFIZIERT

    Hello I am looking for Cryptocurrency trade platform. I will appreciate any readymade system. Please bid, if you are experienced on it and got demo. i am looking for something like binance or yobit Do not bid more than of my budget or do not bid, if your price is more than of my budget. No time waster [Zur Anzeige der URL Anmelden] WITH DEMO ACCESS

    €2483 (Avg Bid)
    €2483 Gebot i.D.
    29 Angebote
    Create Online Bitcoin Wallet 4 Tage left
    VERIFIZIERT

    Searching for somebody who could create an online Bitcoin wallet (similar to Xapo). Moreover, a mobile app must be created as well to access the wallet (iOS and Android)

    €2485 (Avg Bid)
    €2485 Gebot i.D.
    59 Angebote
    compile a coin for me 4 Tage left
    VERIFIZIERT

    Hi I want you to compile new coin for me with Explorer Windows and linux wallet Minning pool

    €629 (Avg Bid)
    €629 Gebot i.D.
    11 Angebote
    Need to Fork Litecoin 4 Tage left
    VERIFIZIERT

    Hi All, I want to Fork a coin based on LTC. Experience in Blockchain and cryptocurrency will only place the bid. Details will be shared over personal message. Thanks

    €782 (Avg Bid)
    €782 Gebot i.D.
    23 Angebote

    necesito un programador que me ayude a hacer este proyecto, quiero que el robot trabaje en diferentes exchanges y soporte distintas monedas (BTC,LTC,ETH)

    €2068 (Avg Bid)
    €2068 Gebot i.D.
    14 Angebote

    This is part one of a multi-part evolving project. This is webapp solution will allow users to extract the blockchain data of the users' wallets. Data will be saved to a SQL server. The webapp will also periodically capture incremental data of the wallets. The webapp will then allow the user to view their wallet ledgers and token asset summary. To keep this project small and on budget, we w...

    €170 (Avg Bid)
    €170 Gebot i.D.
    13 Angebote
    Bitcoin Mining Website 4 Tage left
    VERIFIZIERT

    I am looking for a profitable bitcoin mining website. That can make at least 10x back for my customers investments. I am interested in new freelancer because for this project I will you $50. Please don't bid if you do not agree on my budget.

    €50 (Avg Bid)
    €50 Gebot i.D.
    6 Angebote

    This project is only for senior experts who have proven experiences in mobile wallet of several digital assets. Need to provide several digital assets like BTC, ETH, Monero, .. Send, Receive, Exchange between assets functions to be implemented Need import/export private key Backup wallet function need high security Several Language Native or Hybrid both possible

    €3231 (Avg Bid)
    €3231 Gebot i.D.
    38 Angebote

    I am looking for a Bitcoin core developer

    €18 / hr (Avg Bid)
    €18 / hr Gebot i.D.
    30 Angebote
    bitcoin purchase 3 Tage left
    VERIFIZIERT

    I need help buying bitcoin until my accounts are synced

    €151 (Avg Bid)
    €151 Gebot i.D.
    6 Angebote
    bitcoin core synchronization speed 3 Tage left
    VERIFIZIERT

    I need to be synchronized to bitcode core faster. Please help asap

    €42 (Avg Bid)
    €42 Gebot i.D.
    3 Angebote
    New crypto betting game 3 Tage left
    VERIFIZIERT

    I have a new cryptocurrency and have a new idea for a betting game to be used with my currency. I need it to be automated and fair and can be verified. Smart contract or similar to be used for random flip feature so code can be open source and verified

    €1922 (Avg Bid)
    €1922 Gebot i.D.
    22 Angebote
    Web wallet for new cryptocurrency 3 Tage left
    VERIFIZIERT

    Simple secure web wallet required for new dash fork

    €266 (Avg Bid)
    €266 Gebot i.D.
    18 Angebote
    !! Blockchain Job - 3-9 Months !! 3 Tage left
    VERIFIZIERT

    !! READ the REQUIREMENTS before you knock !! Key Factors: - You are expected to have good knowledge on areas such as; blockchain/crypto-threats/solidity/Hyperledger/Smart-contract/Hash-Algorithms/51% attacks. - You will probably need to spend 90-130 hours per month to do the required tasks. ( For instance; an experienced person, in the related area, may do the required job in 90 hours, whe...

    €252 (Avg Bid)
    €252 Gebot i.D.
    11 Angebote

    I need to create a web platform for the collection of investments, offered as plans or time subscriptions. The system must provide a recognition for users of a fixed ROI, with the possibility, at the end, to be able to renew it. For subscription and renewal, the user will pay a commission. Each user will have a virtual wallet. You can: recharge (paypal, maunale with bank transfer, stripe, blockcha...

    €603 (Avg Bid)
    €603 Gebot i.D.
    18 Angebote

    We are planning a Multi-Vendor-Marketplace which uses Bitcoin and Monero as payment. It should have 2 main categories, virtual goods (like CD-Keys) and real goods (like Laptops). It should be coded, if possible, in pure php without 3rd party components. Security is the goal number one, so no Javascript. The payments should run without a payment gateway. The design can be clean and minimalist. ...

    €2315 (Avg Bid)
    €2315 Gebot i.D.
    26 Angebote
    Looking for blockchain API 2 Tage left
    VERIFIZIERT

    Looking for an expert for the API of these coins (No 3rd Party) XRP BCH EOS STELLER TETHER TRON BTC SV

    €163 (Avg Bid)
    €163 Gebot i.D.
    9 Angebote

    Hi! I am looking for a crypto expert to help me understand some of the basic concepts of the blockchain and programming. Thanks!

    €816 (Avg Bid)
    €816 Gebot i.D.
    26 Angebote
    Crypto Mining 2 Tage left

    Hello, I am looking for someone who has a big knowledge in crypto currencies and mining.

    €27 / hr (Avg Bid)
    €27 / hr Gebot i.D.
    25 Angebote
    CREATE BILLET FOR BITCOIN -- 2 1 Tag left
    VERIFIZIERT

    Hello freelancers I am looking for someone skilled in bitcoin technology and blockchain to create a bitcoin wallet that can be sent to transfer between members of the same wallet see historical etc.

    €748 (Avg Bid)
    €748 Gebot i.D.
    17 Angebote

    Hello! Please be sure you read this prior to contacting or placing a bid so you know exactly what I am looking for. Thank you! The details for this project are as follows: I need a lightweight multi currency wallet. This wallet will NOT have to download the entire chain for all the currencies in this wallet. This wallet will run on Windows 7 and up. The user should be able to switch between t...

    €1937 (Avg Bid)
    €1937 Gebot i.D.
    20 Angebote

    Hi, Greetings!!! Looking for a Hybrid coin like Litecoin. Should have it's own Exchange, Blockchain and Coin.

    €4973 (Avg Bid)
    €4973 Gebot i.D.
    31 Angebote

    Need to develop a Crypto Currency exchange Similar to Binance. Please only beed who worked on Blockchain and Crypto Currency Exchange development.

    €16415 (Avg Bid)
    €16415 Gebot i.D.
    31 Angebote
    bitcoin ATM 1 Tag left
    VERIFIZIERT

    Bitcoin Crypto ATM Software for ATM

    €24 (Avg Bid)
    €24 Gebot i.D.
    3 Angebote

    Use the home page like [Zur Anzeige der URL Anmelden] I will purchase this wordpress theme I have someone working in PHP on news aggregator page so we have to make sure this work and his work are integarated in the site and cross linked We need to fill and future import all listings from [Zur Anzeige der URL Anmelden] [Zur Anzeige der URL Anmelden] Location: ...

    €271 (Avg Bid)
    €271 Gebot i.D.
    17 Angebote

    Парсер должен сделать таблицы входящих и исходящих транзакций с номерами кошельков по каждому dat-файлу (wallet Bitcoin Core). >> Номер блока; Дата блока; Номер транзакции; Кошелек; Сумма << Оптимизирован по скорости работы (возможно с автораспределением парсинга на сеть компьютеров). парсер нужен на С/С++, VS2017 --- В своей заявке укажите пожалуйста время за которое ваш парсер обраб...

    €127 (Avg Bid)
    €127 Gebot i.D.
    4 Angebote

    1. Incorporate within an existing site btc and eth payment modules. 2. Encompasses smart contracts setup and also hashing data encryption. 3. Provide all possible and required documentation to managing all infrastructure setup and developed.

    €437 (Avg Bid)
    €437 Gebot i.D.
    26 Angebote
    CREATE BILLET FOR BITCOIN 8 Stunden left
    VERIFIZIERT

    Hello freelancers I am looking for someone skilled in bitcoin technology and blockchain to create a bitcoin wallet that can be sent to transfer between members of the same wallet see historical etc.

    €819 (Avg Bid)
    €819 Gebot i.D.
    27 Angebote
    Create security erc20 token Ende left
    VERIFIZIERT

    I need an erc20 security token on blockchain.

    €110 (Avg Bid)
    €110 Gebot i.D.
    7 Angebote

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