You can earn money at Freelancer.com by using your bitcoin skills.

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.

Hire Bitcoin Experts

Filter

My recent searches
Filter by:
Budget
to
to
to
Skills
Languages
    Job State
    923 jobs found, pricing in USD

    Greetings Freelancers! We are in search of an experienced freelancer that can create an ERC20 token contract on Ethereum. The contract will need to distribute our token to a list of Pre-determined Addresses including an Airdrop campaign, and include delayed future distribution requirements. We also need the contract to be properly included and verified on Ethereums explorer. Requirements: ERC20 Token Contract Contract will include pre-defined distribution schedule for pre-ico, team, etc (addresses, distribution date, percentage) Airdrop Campaign (distributed at defined date) Test, Test, and Retest the contract prior to completion. Verified Etherscan Explorer Additional information and details available once hired on our team. Payment and Bonus: We will pay the accepted bid price in US$ through Freelancer Escrow. Additionally, you will qualify for a competitive payment bonus of our Token if the contract and work is completed properly and without errors. If you truly want to be hired for this project then please bid with a detailed bid and include the following information; Short description about yourself / team / experience List of any other similar projects When can you start Completion Timeframe Payment Preferences Bid Amount (US$) Any additional skills you have Preferred Skills and Experience: Blockchain, C++ , Smart Contracts, Ethereum

    $750 - $1500
    $750 - $1500
    0 bids

    Looking for someone with working knowledge of mining software and configuration of rigs.

    $155 (Avg Bid)
    $155 Avg Bid
    1 bids

    Similar to Minergate dot com mining software

    $707 (Avg Bid)
    $707 Avg Bid
    4 bids
    Referral programme need 6 days left
    VERIFIED

    hi, we have website php based [url removed, login to view] we need rereferal programme. this site is for BitCoin ICO and I need 100% compatible referral programme. pls show us your demo and features so we will award you. thanks

    $174 (Avg Bid)
    $174 Avg Bid
    8 bids
    Website Building 6 days left
    VERIFIED

    I need a similar website. [url removed, login to view] I need with the live transaction chart. Download and run the site on offline. Bid if you can do it.

    $161 (Avg Bid)
    $161 Avg Bid
    15 bids

    Developing a full coin with DAG Algorytm , 1000.000.000 premined coins with 1 percent transactions fees. The coin include Creation, Block Explorer creation , Seednode , Wallet compilation and Coin revival services. Please fixe price only you can suggest any price you would I can't talk with for price .

    $471 (Avg Bid)
    $471 Avg Bid
    6 bids

    Hi, I just got back from the National Bitcoin conference in Miami and finally think I am ready to pursue my own token. I have been in the cryptocurrency space since 2012. Although, have only been approaching it seriously this past year. I am very approachable, easy and fun to work with. I am needing a developer who fully understands blockchain principles, who I can run my ideas against and hopefully start something bigger. In hopes of creating my own alt-coin. Please advise and send your proposal if you feel like your'e the right candidate. I am aware I do not have any history of paid jobs, only because I am new to this site. MY budget is extensive though :) Cheers!

    $110 / hr (Avg Bid)
    $110 / hr Avg Bid
    29 bids

    Hey, we are looking for someone to intigrate nicehash legacy source code in our Windows Form (Nicehash Legacy itself is a windows form, but a bit old). We have attached a simplified version([url removed, login to view]) of our windows form and the link to nicehash legacy source code. (Below) We suggest you go true the mining process first to understand how it works. You can download it at link below and use it once to understand how it works. In the bitcoin adress you can write any bitcoin adress or just a random one like this one (1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX) Application Download/Information: [url removed, login to view] Source Download: [url removed, login to view] Your job would be to get the following features out of nicehash legacy source code and implement it in our [url removed, login to view] windows form (Download in attachments) : Prepare software -download the necesery files(miners, etc) and give us the event so we can display a loading bar -the typical checking for devices and everyting what nicehash needs to prepare itself ([url removed, login to view]) -make configs files if dont already exist. Give return the path of this confige files, so we can edit them ourselfs. The confige files are: [url removed, login to view] -benchmark_...For each divces [url removed, login to view] [url removed, login to view] Start / stop mining Bencmarking -Start -Stop -Progress bar -If cancled continue or start again

    $631 (Avg Bid)
    $631 Avg Bid
    8 bids

    we need team member for : User generates a new address for coin (IndexController->getDepositForm) User send an amount to this address (BitcoinPending command executes and adds pending transaction to database) Transactions gets confirmed and amount adds to user balance (BitcoinNewBlock executes and checks blocks for the transactions, once the transaction mined into a block the following blocks add to transaction confirm count until it reaches to defined confirm count) User withdraw amount and it subtracts from user balance + withdraw fee specified in the database (IndexController->withdraw) Tasks: Install coin client on a server (preferably Ubuntu) Documenting steps for installing and configuring coin client and special considerations for coin transactions Coin functions: Generate address Deposit Pending transactions Confirmed transactions Withdraw Transaction fee Transaction details

    $1518 (Avg Bid)
    $1518 Avg Bid
    9 bids
    Ethereum Wallet 6 days left
    VERIFIED

    I want simple ethereum web wallet and also send and receive function it should be simple web based app where new user signs up and he will have unique eth address for his account and with that eth add if he has balance can send eth or can receive eth to that address

    $928 (Avg Bid)
    $928 Avg Bid
    18 bids

    I need blockchain expert. I need site similar https://token.store. You must have enough experience in erc20 token, smart contract and web3js. Please let me know if you can do.

    $8086 (Avg Bid)
    $8086 Avg Bid
    8 bids

    We are looking for a freelancer to create a smart contract on Ethereum for our fundraising ICO. To boost our project we like to use this ICO as fundraising. We would also like help Integrating this into our website to show a visual of how much has been raised. We would like to setup the smart contract so that the coin supply is created based on the amount deposited and that any surplus coins are burned. The ICO will not have a pre-sale. We have a bonus in the first period of the ICO. ETH and BTC shall be accepted. The token shall be transferred within the transaction of the ETH/BTC. We will have a hard- and a soft-cap. The ETH/BTC shall be transferred to a hardware wallet. Further specifications and details will be sent once we are in contact. No generic response please. We are a German SME and would like to work with someone who has created in this field before. Please send some references. Looking forward to your quotes. All the best, Lars Skills: Bitcoin, Blockchain, C++ Programming, Contracts, Ethereum

    $1602 (Avg Bid)
    $1602 Avg Bid
    28 bids

    Hello I need ripple expert. My goal is to integrate ripple wallet to cyptocurrency exchange market. If you have experience with xrp, please bid Regards, Huapeng

    $222 (Avg Bid)
    $222 Avg Bid
    12 bids

    What I mean by this is that you should apply the coding or logic by which I will be able to change masternode rewards of the coin per block. OR you can make some code / logic to give ALL masternodes 50 coins per block. If there are 50 masternodes then every masternode gets 50 coins per block. If there are 100 masternodes, then also every masternode gets 50 coins per block Project Type: One-time project You will be asked to answer the following questions when submitting a proposal: Can you make some code / logic to give ALL masternodes 50 coins per block. If there are 50 masternodes then every masternode gets 50 coins per block. If there are 100 masternodes, then also every masternode gets 50 coins per block

    $3600 (Avg Bid)
    $3600 Avg Bid
    9 bids

    need to sell my project or create/join to/ a team which have similar goals. i have a first full Blockchain Messenger. have core. mobile app for android. web. it is contains two parts: 1-st - only wallet for alt-coin, 2-nd - messenger according core and blockchain.

    $4051 (Avg Bid)
    $4051 Avg Bid
    12 bids
    Bitcoin Core 6 days left

    I have a large CSV file with strings, each one is a Bitcoin address. For each of these addresses, I need to know its final balance. Using an external API would be problematic, since its calls are limited, and my file has millions of strings. Therefore, it would be best to download the blockchain and query it locally. You can assume that Bitcoin Core is already installed. Eventually, I need to know the balance for each address, i.e. next to each address I will have its balance in BTC. No need to present an address for which the balance is 0.

    $167 (Avg Bid)
    $167 Avg Bid
    15 bids
    small btc wallet 6 days left

    PLEASE, ONLY BID IF YOU *PERSONALLY* ARE: 1) The actual coder of my project (see description below); 2) Ready to work, on a per hour basis with me (I am a beginner programmer) - in real-time (via Teamviewer and Skype); 3) *Very knowledgeable* about how bitcoin wallets work (since I am); 4) *Proficient* with bitcoin *public* libraries (bitcoin core, bitcoinj...); 5) Ready to *first* let me interview you to evaluate your knowledge about cryptocurrencies, and your communication skills. MY PROJECT IN A NUTSHELL Since my coding abilities are very limited, I want to hire a professional coder who can teach me how to code a simple SPV web-wallet generating the QR code of a raw unsigned bitcoin transaction composed of: . One Sending Address . Three Receiving Addresses . Modular mining fees.

    $11 / hr (Avg Bid)
    $11 / hr Avg Bid
    6 bids

    I would like a cryptocurrency alt-coin built. I would like it to be pre-mined. I would like it to be connected to my website with a place to get free coins which will be given out in my ico. I would like a wallet on the website., I would also like something setup to allow mining for the coin. A bitcoin clone or Ethereum clone would work well.

    $611 (Avg Bid)
    $611 Avg Bid
    17 bids

    [url removed, login to view] as reference : Our Cloud mining system will allow anyone to set up a miner with ease from our platform/website app You must understand Blockchain / Java / Mining set up requirements . Agreement Based on Milestones and Proof of skill Task One: Set up server cloud miner code to mine Etherium from our server using CPU/GPU resources Task Two: Create online browser access to pair user resources with internal server as joint mining Task Three: Create Multi methods for users to use our system with what ever hardware they use : System does a hardware discovery and creates a soft access in order for them to join our pool More lots more... Lets get some proof of work done and then a real contract with us for longer term/

    $20 / hr (Avg Bid)
    $20 / hr Avg Bid
    12 bids

    Hi, Looking for capable designer & development team to design & develop an ICO website using wordpress. Our favored ICO websites are [url removed, login to view] [url removed, login to view] [url removed, login to view] Please list your previous website design & development that has login/register function. Your design sample needs to be line with the favored websites we listed. If it's ICO website even better! Can you finish within 2 weeks? If so what's your total price? Thank you.

    $52 / hr (Avg Bid)
    $52 / hr Avg Bid
    35 bids

    Top Bitcoin Community Articles