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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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    32 робіт знайдено, ціни вказані в USD
    Build a new cryptocurrency 6 дні(-в) left

    Hello, we want to build a new new cryptocurrency which is paired to USDT. ( So it will be more stable. ) We also want that you list our coin or token on Crex, yobit and stex. when we get more volume then bigger one following. You should have expierence and should have some references. Would be good when you also have good contacts to "influecer" . The goal should be to be under the Top...

    $13 / hr (Avg Bid)
    $13 / hr Сер. заявка
    7 заявки

    Hello! I need a script crypto exchange, just looking for a ready solution. Before buying, I need to watch a demo! I do not need to develop from scratch, such a proposal please do not write to me!

    $7852 (Avg Bid)
    $7852 Сер. заявка
    43 заявки
    BITCOIN PAYMENT GATEWAY INTEGRATION 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    I need you to integrate a bitcoin api payment gateway on my website

    $50 (Avg Bid)
    $50 Сер. заявка
    8 заявки
    Create a Stable coin on Ethereum network (Smart contract) 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Develop a smart contract for our token. It must have the following features. (Add new coins when ever needed) (Flexible token supply) (Whitelist and blacklist wallet addresses) (Receiving the tokens back) Many stable coins smart contracts are open sourced.

    $627 (Avg Bid)
    $627 Сер. заявка
    12 заявки

    I want create windows and Linux wallet for my own crypto POW/POS, and beside the wallets the instructions and steps to do in PDF file. I will accept the lowest price.

    $324 (Avg Bid)
    $324 Сер. заявка
    13 заявки
    Develop a bitcoin wallet 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    i need to develop a quick 2 page btc wallet application, with send and received feature. Please let me know if u can get this done. You could use [увійдіть, щоб побачити URL] API service or the BTC client web service

    $23 / hr (Avg Bid)
    $23 / hr Сер. заявка
    32 заявки

    hi i am looking forward to get a website which is subscription based but i want subscription payment gateway in bitcoin. So please contact me if you can make a subscription base website with bitcoin gateway.

    $409 (Avg Bid)
    $409 Сер. заявка
    11 заявки
    We're seeking a script crypto exchange. 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hi, Digital Warriors, We're seeking a script crypto exchange. Im just looking for a ready solution. Before buying i need to watch a demo. I do not need to develop from scratch, such a proposal please do not write to me. Please don't contact me for upfront payments. My method of payment is by creating milestones and release it once the task was completed.

    $612 (Avg Bid)
    $612 Сер. заявка
    20 заявки
    QT WALLET DEVELOPER 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello, We created with photoshop (.psd) our new design for our futur wallet QT, and we looking for an developer for implement our design. Thank you.

    $149 (Avg Bid)
    $149 Сер. заявка
    8 заявки
    ERC20 token exchange listing with low budget. -- 2 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    ERC20 token listing with low budget.

    $808 (Avg Bid)
    $808 Сер. заявка
    16 заявки

    i need a cryptocurrency exchange for bitcoin, xrp, bch, eth, ltc, etc... please send me prices i want something like [увійдіть, щоб побачити URL] i already have dedicated server

    $4268 (Avg Bid)
    $4268 Сер. заявка
    61 заявки

    I need Bitcoin Node to be installed with API key. The whole server must be install securely and should be penetrate able. Server must run a full node with API access. API must be use able to create/generate new wallet addresses, Node must be able to send and receive payments, Node must be automatically transferring funds from node wallet to a cold / hardware wallet. Server must be protected agains...

    $388 (Avg Bid)
    $388 Сер. заявка
    8 заявки
    Crypto QT Wallet UI Update & Feature integration 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    We are looking for someone with a lot of experience with blockchain and wallets. We are looking for someone that can update the entire wallets UI and add additional features such as a graph, seed key. Ideally looking for around the 500-600$

    $586 (Avg Bid)
    $586 Сер. заявка
    18 заявки

    I need trading cryptocurrency market fully functional, similar to big exchangers. - Wallet - deposits and withdrawal of crypto only. Knowledge of digital currencies and how cryptocurrency market work. Please do provide links to similar project you have done.

    $1220 (Avg Bid)
    $1220 Сер. заявка
    46 заявки
    looking for Co founders programmer and ICO specialist 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    I am looking for Co founders blockchain programmer and ICO specialist to start new project

    $19 (Avg Bid)
    $19 Сер. заявка
    6 заявки
    crypto exchange -- 2 3 дні(-в) left

    Hello! I need a script crypto exchange, just looking for a ready solution. Before buying, I need to watch a demo! I do not need to develop from scratch, such a proposal please do not write to me!

    $1273 (Avg Bid)
    $1273 Сер. заявка
    35 заявки
    Bitcoin jackpot site 3 дні(-в) left
    ПІДТВЕРДЖЕНО

    Looking for partner (paid small amount while working and then site revanue) I want a bitcoin jackpot site (script) Players register and deposit btc. They then ret credit on the site to use in the jackpot. Jackpot is timed so Player can join in and try win the pot. Site profit is 10% of each played game. Dont reply of you havent read it all. Dont reply og you dont Know what bustabit crash gam...

    $91 (Avg Bid)
    $91 Сер. заявка
    4 заявки
    Smart Contract needed for ICO / Token distribution 3 дні(-в) left
    ПІДТВЕРДЖЕНО

    Greetings, digital warriors, We're seeking a capable developer with experience writing smart contracts. We will be embarking on our ICO sometime in January, and need a smart contract to be written for us. We will take care of the ICO landing page (front/back-end), and we will have a payment gateway ready (Coinpayments). All we need from you, is a rock-solid smart contract that will enable...

    $2834 (Avg Bid)
    $2834 Сер. заявка
    55 заявки
    Create new genesis block 3 дні(-в) left

    I need to generate new genesis block insted of current one for POW/POS cryptocurrency, with new vAlertPubKey and scriptPubKey all instruction and steps should be include. award will be according to best price

    $180 (Avg Bid)
    $180 Сер. заявка
    8 заявки
    crypto exchange 3 дні(-в) left

    Hello! I need a script crypto exchange, just looking for a ready solution. Before buying, I need to watch a demo! I do not need to develop from scratch, such a proposal please do not write to me!

    $1406 (Avg Bid)
    $1406 Сер. заявка
    44 заявки
    Cryptocurrency mining pool modification 2 дні(-в) left
    ПІДТВЕРДЖЕНО

    I'm trying to modify pool codes in a mining pool using SHA 256 and redeem the hashes in another coins . Basically my device only process SHA 256 but wondering if we could program the pool to convert the algorithm ? please contact me if you have experience in this filed. my method of payment is by creating milestones and release it once the task was completed . had lots of good reviews so far...

    $461 (Avg Bid)
    $461 Сер. заявка
    15 заявки
    Bitcoin Shop & Wallet 2 дні(-в) left
    ПІДТВЕРДЖЕНО

    We need website or web application for sell bitcoins & Cryptocurrency online by credit card like this page [увійдіть, щоб побачити URL] The client register in our website and he must get wallet for send and receive the bitcoin

    $1026 (Avg Bid)
    $1026 Сер. заявка
    36 заявки
    ERC20 token exchange listing with 1 - 2 eth budget. 1 день left
    ПІДТВЕРДЖЕНО

    ERC20 token listing with 1 - 2 eth budget.

    $534 (Avg Bid)
    $534 Сер. заявка
    27 заявки

    hello! we are looking for people who can get us a decentralized crypto exchange you can looking at this website [увійдіть, щоб побачити URL]

    $2169 (Avg Bid)
    $2169 Сер. заявка
    14 заявки
    ICO Bounty Program - ICO Marketing Manager 1 день left
    ПІДТВЕРДЖЕНО

    we need someone to write, publish and manage an ICO bounty program 1. BOUNTY CAMPAIGN ANNOUNCEMENT 2. MANAGE THE BOUNTY CAMPAIGN ITSELF Looking for an experienced bounty manager to manage our bounty campaign for an ICO. We our an upcoming ICO Project and need a bounty manager for an ICO camapign. Your tasks include community management for our different Bounty Campaigns and Airdrops for an ...

    $457 (Avg Bid)
    $457 Сер. заявка
    12 заявки
    cryptocurrency 1 день left
    ПІДТВЕРДЖЕНО

    i want to create a cryptocurrency for payment.

    $741 (Avg Bid)
    $741 Сер. заявка
    25 заявки
    Setup Electrum Wallets 1 день left

    I am looking for a blockchain developer experienced in setting up Electrum wallets. Project's description and features is attached.

    $331 (Avg Bid)
    $331 Сер. заявка
    11 заявки
    Blockchain expert. 1 день left

    Hi. I am going to develop new blockchain. I will share details for right freelancer.

    $1128 (Avg Bid)
    $1128 Сер. заявка
    35 заявки
    Needed ERC20 token Service 17 годин(-и) left
    ПІДТВЕРДЖЕНО

    We need ERC20 token Service Developer. We are looking for a highly skilled developer who can provide us ERC20 Services. We are looking for • Get Balance • Token Send/Receive • Token Address Generation • Transaction History Please Note: • You will need to handover the full development source code to us. • Should be developed with PHP CodeIgniter. • We need the se...

    $543 (Avg Bid)
    $543 Сер. заявка
    18 заявки
    Create PIVX based new coin ( Masternode Coin) 5 годин(-и) left
    ПІДТВЕРДЖЕНО

    1. Create a masternode coin like pivx 2. Create block explorer 3. Create QT wallets ( Win - 32-64, Linux, Mac ) 4. Publishing source code in github [увійдіть, щоб побачити URL] masternode guide 6. guide to install the seednode Please note : I require only professional developers , I will first check if the coin chain is smooth or not I mean no bugs in the coin or proof of stake

    $994 (Avg Bid)
    $994 Сер. заявка
    11 заявки
    Calculadora Minería Criptomonedas 4 годин(-и) left
    ПІДТВЕРДЖЕНО

    El proyecto es crear una calculadora de minería de criptomonedas. 1. Programación de la calculadora. - Se te entregarán las ecuaciones necesarias. - Se extraerá la información de una API Rest externa. 2. Diseño de la calculadora. - Se te entregará el diseño desktop para que crees la plantilla. - Debe ser mobile-friendly. Hablemos por cha...

    $509 (Avg Bid)
    Обраний
    $509 Сер. заявка
    18 заявки
    Create a new Crypto Currency 12 дні(-в) left
    ПІДТВЕРДЖЕНО

    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.

    $3395 - $5658
    Обраний Прихований Угода про нерозголошення
    $3395 - $5658
    64 заявки