Bitcoin Jobs og konkurrencer

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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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Projekt/konkurrence Beskrivelse Bud/Indlæg Færdigheder Påbegyndt Slutter Pris (EUR)
Full Stack Developer with passion for Blockchain We're looking for a self-starter full stack developer to become part of our very exciting crypto world. If you are interested in Blockchain technology and can code your way around anything, apply today! 0 Bitcoin, App Developer, Blockchain, Ethereum Feb 23, 2018 I dag6d 23h -
Make a new cryptocurrency from forknote I neeed a new coin from forknote/CryptoNote. It can be made in less than 30 min. I need everything: wallet, blockchain, pool, explorer, github repository. All material is free in internet. Please need to be like those two links: [url fjernet, log ind for visning] or [url fjernet, log ind for visning] Those link above teach and show how to do. The specifications I will send... 6 Web Sikkerhed, Bitcoin, Programming, Blockchain, Ethereum Feb 23, 2018 I dag6d 22h €481
Create dice game bitcoins i need someone can create script site like [url fjernet, log ind for visning] or [url fjernet, log ind for visning] and someone know about bitcoins, if you know and can do it just the bid. 10 PHP, Javascript, Web Design, HTML, Bitcoin Feb 23, 2018 I dag6d 21h €663
Looking for ICO crypto currency marketing I need some help with finding some leads, for launch ICO crypto currency. We are searching for Team members (Business partners) Meaning that you will be a part of our ICO / Cryptocurrency Business. Marketing (Writing / White paper Experience is a must Video Editing (Creating/videos) Community Managers Content Writers with experience in CryptoCurrency Please do not Respond if you are inv... 5 SEO, Leads, Bitcoin, Ethereum, SEO Writing Feb 23, 2018 I dag6d 20h €20
ICO landing page Need a ICO landing page... Basically just a webpage but with btc and ethereum and also USD fiat payment attached and auto receipts to their email etc saying how much coin they will receive on the ico launch date etc... like a sales guarantee for the ico launch date and payment receipt etc this page before coin is launched indeed... so if you can make it done beautifully and its easy task ... 18 PHP, Web Design, HTML, Ikon Design, Bitcoin Feb 22, 2018 I dag6d 14h €164
Fork Cryptocurrency DASH or PIVX Need fork of dash/pivx with working wallet 5 Bitcoin, Ethereum Feb 22, 2018 I dag6d 8h €4534
Create Crypto MasterNode fork Of DASH/PIVX Need a masternode fork of dash/pivx with working wallet. Possibility to join forces with the right developer to make this project together in reward for coin share once running. Must have knowledge of cryptocurrencies and worked on coins before. 5 Bitcoin, Coding, Ethereum Feb 22, 2018 I dag6d 8h €687
Blockchain Developer I want to talk with Blockchain Developer fast. I have a lot of jobs and specs. If you are ok, show me your skills to me. Thanks 12 PHP, node.js, Bitcoin, Blockchain Feb 22, 2018 I dag6d 7h €17
Project for fb5a725134cc4fa Hi fb5a725134cc4fa, I noticed your profile and would like to offer you my project. We can discuss any details over chat. 2 Javascript, HMLT5, , Bitcoin, Web Development Feb 22, 2018 I dag9d 5h €128
Complete Crypto Currency Exchange Site **Please read before bidding** Looking to get my Crypto Currency Exchange site completed. I currently have a Crypto Currency on the Ether Block chain that is complete and ready for circulation. I have already had the Ethereum Wallet and node installed on my server, and wallet programmed into my exchange exchange to be able to Purchase with Credit card, and transfered to other users on my exchange site. The current sy... 25 PHP, Software Arkitektur, MySQL, Bitcoin, Ethereum Feb 22, 2018 I dag6d 4h €1937
Research Crypto software research Just make a project for research for cryptocurrency platform and give skills Blockchain, cryptocurrency, Bitcoin, ethereum 7 Kryptografi, Bitcoin, Software Udvikling, Blockchain, Ethereum Feb 22, 2018 I dag6d 4h €115
ICO website accepting eth and creating a erc20 coin Hello Please have experience in creating ICO website. I am looking to accept eth. I am looking to create an erc20 token. 15 Bitcoin, Ethereum Feb 22, 2018 I dag6d 3h €1044
Animation for Onyx project Onyx is an erc20 token. Onyx is built for service... 1. To facilitate payment of goods and services on Kwakoo Marketplace. 2) To be the base trading currency on Kwakoo Exchange 3) To be spent on POS and withdraw from ATM through a prepaid card. 31 Adobe Flash, Grafisk Design, Animering, 3D Animation, Bitcoin Feb 22, 2018 I dag6d 3h €315
Want new Crypto Currency software like bitcoin please read first then bid make Want new Crypto Currency software like bitcoin fully functional only need software if have ready made make sure you already developed then make bid 7 PHP, Javascript, Software Arkitektur, MySQL, Bitcoin Feb 22, 2018 I dag6d 1h €2015
Create CryptoCurrency - Algo Neoscript or Skein Hi, We looking for an dev expert on crypto currency / blockchain domain, for create our own crypto currency coin. Our requirement is : Create an coin Hybrid PoW/PoS cryptocurrency based on Skein algorithm or Neoscrypt and feature hybrid PoW/PoS stage. Algo : NEOSCRYPT OR SKEIN Proof of Work / Proof of Stake / Masternodes Total supply: 69.000.000 More details will send to you per... 33 node.js, Bitcoin, Blockchain, Ethereum Feb 22, 2018 Feb 22, 20185d 19h €5119
BLOCKCHAIN DEVELOPER NEEDED! BTC + ERC20 Web Wallets Hello I have an existing investing platform where people can use my erc20 token as utility token. I am searching for a Blockchain developer to realise the following: 1. one BTC web wallet for each user (deposit + withdrawal) 2. one ERC20 web wallet for each user (deposit + withdrawal) every user has to have his own wallet where he can deposit and withdrawal hes funds. The design and ... 12 Bitcoin, Blockchain Feb 22, 2018 Feb 22, 20185d 18h €293
Blockhain Parser Cryptocurrency Bitcoin BTC C# The application should be multi-threaded at least the initial Sync. The application must parse the **entire** bitcoin blockchain / chainstate db folder. The application needs to extract all BTC Addresses with Balance > 0 in the fastest possible way. These addresses has to fill a List1 ( BlockchainAdresses ) Could be stored in a database to update it later. A second List (MyBTCAdresses) nee... 15 C programmering, Big Data, Bitcoin, Programming, Blockchain Feb 22, 2018 Feb 22, 20185d 16h €853
Build Bitcoin online Wallet Build Bitcoin online Wallet In php .. 37 PHP, Kryptografi, Bitcoin Feb 21, 2018 Feb 21, 20185d 14h €4416
bitcoin address alert tracking Hi, I want to receive instant alerts via email and telegram when specific bitcoin address receive or send amounts valued 10 million USD or greater on blockchain.info. 21 PHP, Javascript, Software Arkitektur, MySQL, Bitcoin Feb 21, 2018 Feb 21, 20185d 13h €317
Cryptocurrency exchange platform I'm looking for talented designer and developer who has experienced in Cryptocurrency exchange platform. Here are referenced links : [url fjernet, log ind for visning] robinhood has got very good Interface : [url fjernet, log ind for visning] What's your best estimate? 27 PHP, Web Design, Grafisk Design, Software Arkitektur, Bitcoin Feb 21, 2018 Feb 21, 20185d 13h €1577
Create a Smart Contract on Ethereum for Token Distribution 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: ... 3 PHP, C++ Programmering, Bitcoin, Programming, Ethereum Feb 21, 2018 Feb 21, 20185d 6h €6815
Looking for mining experts Looking for someone with working knowledge of mining software and configuration of rigs. 4 Kryptografi, Bitcoin Feb 21, 2018 Feb 21, 20185d 3h €124
Cryptocurrency mining software Similar to Minergate dot com mining software 9 Java, Windows Skrivebord, Software Arkitektur, Bitcoin, Ethereum Feb 21, 2018 Feb 21, 20185d 3h €930
Referral programme need hi, we have website php based [url fjernet, log ind for visning] 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 10 PHP, Web Design, Grafisk Design, HTML, Bitcoin Feb 21, 2018 Feb 21, 20185d 2h €133
Website Building I need a similar website. [url fjernet, log ind for visning] I need with the live transaction chart. Download and run the site on offline. Bid if you can do it. 18 PHP, Javascript, Web Design, HTML, Bitcoin Feb 21, 2018 Feb 21, 20185d 2h €129
Developing a coin with DAG algorytm chain 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 . 7 Algoritme, Statistikker, Matematik, Bitcoin Feb 21, 2018 Feb 21, 20185d 2h €415
Intigrate diffrent Windows Form in our Windows Form (Cryptocurrencies,NiceHash,c#) 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 fjernet, log ind for visning]) 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... 13 C# Programmering, Software Arkitektur, Bitcoin Feb 21, 2018 Feb 21, 20185d 1h €552
add altcoins to cryptocurrency exchange platform 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 ... 16 Bitcoin, Ethereum Feb 21, 2018 Feb 21, 20184d 22h €911
Ethereum Wallet 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 19 Kryptografi, C++ Programmering, node.js, Bitcoin, Ethereum Feb 21, 2018 Feb 21, 20184d 22h €746
Build Cryptocurrency exchange platform. 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. 9 PHP, HMLT5, Bitcoin, Blockchain, Ethereum Feb 21, 2018 Feb 21, 20184d 21h €6115
Smart Contract for ICO by Ethereum ERC20 Token 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 coi... 34 PHP, Web Design, Bitcoin, Programming Feb 21, 2018 Feb 21, 20184d 21h €1200
Integrate Ripple wallet to cryptocurrency exchange market 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 15 PHP, Linux, Bitcoin, Web Development Feb 21, 2018 Feb 21, 20184d 21h €187
Make Crytocurrency / coin with adjustable masternode rewards 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-t... 14 Bitcoin, Blockchain, Ethereum Feb 21, 2018 Feb 21, 20184d 18h €2055
Sell Blockchain messenger 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. 12 Internet Markedsføring, Markedsføring, Bitcoin, Blockchain Feb 21, 2018 Feb 21, 20184d 16h €3294
Bitcoin Core 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 kno... 15 PHP, C programmering, Software Arkitektur, MySQL, Bitcoin Feb 21, 2018 Feb 21, 20184d 16h €131
small btc wallet 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* ... 5 Bitcoin Feb 20, 2018 Feb 20, 20184d 14h €10
Creating an altcoin. - open to bidding 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. 21 System Administrator, Linux, MySQL, VPS, Bitcoin Feb 20, 2018 Feb 20, 20184d 12h €2554
Crypto currancey Etherium AlT coins Java Browser Online Miner [url fjernet, log ind for visning] 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 onli... 11 PHP, Java, Javascript, Bitcoin, Blockchain Feb 20, 2018 Feb 20, 20184d 9h €16
Design & Develop an ICO website using Wordpress Hi, Looking for capable designer & development team to design & develop an ICO website using wordpress. Our favored ICO websites are [url fjernet, log ind for visning] [url fjernet, log ind for visning] [url fjernet, log ind for visning] Please list your previous website design & development that has login/register function. Your design sample needs to be line with the favor... 36 WordPress, HTML, Bitcoin, Blockchain, Ethereum Feb 20, 2018 Feb 20, 20184d 3h €42
backend bot for crypto website I need a backend bot built for my website, user login, balance, btc withdrawal,escrow. Bot must create accounts on a different website with info users submit on my website Bot must do email verification Bot must calculate crypto market price Bot must release escrow Bot must exchange crypto currency from exchange API when needed.. BTC -> XMR SYS<-BTC etc... Please send me a quest... 20 PHP, Python, MySQL, HTML, Bitcoin Feb 20, 2018 Feb 20, 20183d 23h €654
Cryptocurrency Exchange Website (Designing pages are ready) ERC20 Token and minable coins like BTC, LTC and others Reference: [url fjernet, log ind for visning] Also be able to add and remove erc20 token. Implementation like IP stuff, when a user long in with different IP, google 2fa etc Please only bid if you can start and finish within 1 week or sooner. Payment i will create 30% after see some progress and rest after completion. Thank y... 29 PHP, Javascript, Web Design, Software Arkitektur, Bitcoin Feb 20, 2018 Feb 20, 20183d 22h €1149
Write a fundraising campaign I'm looking for someone who is expert in writing a fundraising campaign actually I want to raise money to start my new project, My project is for "Bitcoin trading" not like local bitcoin in this project my plan is to trade using customers bitcoin like share market and will credit profit to customers account if customers want to withdraw his full bitcoin wany time then he can withdra... 8 Markedsføring, Markeds Research, Bitcoin, Kreativ Skrivning, Business Skrivning Feb 20, 2018 Feb 20, 20183d 21h €456
Animation for Crypto project Onyx is an erc20 token. Onyx is built for service... 1. To facilitate payment of goods and services on Kwakoo Marketplace. 2) To be the base trading currency on Kwakoo Exchange 3) To be spent on POS and withdraw from ATM through a prepaid card. 2 3D Animation, Adobe Flash, Animering, Bitcoin, Grafisk Design Feb 20, 2018 Feb 20, 20183d 21h €163
complete bitcoin exchange with top 10 currencies Details specs will be provided in separate communication I need completed bitcoin trading exchange with top 10 currencies. It needs to have complete user registeration, id verification, exchange walltet, send receive coins and most important unbreakable security. 55 HTML, node.js, Bitcoin, Angular.js, Web Development Feb 20, 2018 Feb 20, 20183d 19h €3439
Smart Contract Expert Need a smart contract expert to rewrite a smart contract. I want to implement a lock of tokens in the smart contract. Which means the people who bought tokens will see the tokens in their mew but wont be able to move it till a certain date. This date should be changeable by the owner. Some examples are remme, car vertical. 5 Bitcoin, Blockchain, Ethereum Feb 20, 2018 Feb 20, 20183d 16h €459
Neoscrypt Coin with Masternodes I I require a crypto currency coded with masternodes using Neoscrypt algorithm. Coin will be based off a pre-existing coin so just need to change the wallet design, and other simple values(name,supply,premine, reward per block). Then recompile wallet for linux/windows. Only bid if you know how to do this (meaning not your first time trying) 4 Bitcoin, Ethereum Feb 20, 2018 Feb 20, 20183d 15h €318
Cold Storage Wallets (BTC, ETH, NEO, NEM, LTC, XMR, DASH) - No Asian! Looking for someone with experience in Cold Storage Wallets, creating private keys offline. We would prefer someone with experience handling all wallets mentioned in the title but open to people with experience with just some. We are collecting funds for an ICO, and need secure offline wallets. All other questions or concerns from the applicant can be asked during interview phase. 13 PHP, Ingeniørarbejde, Software Arkitektur, MySQL, Bitcoin Feb 19, 2018 Feb 19, 20183d 13h €450
Looking for an experienced individual to create an ICO website. Must have an relevant experience and show previous work Platform will need to as a minimum: * Create Bitcoin and Ethereum Based Wallets using node method * Stagger ICO Sales * Full Back End Admin Further information will be provided to the right candidate, as for turnaround time its going to be 14 days or less. 18 Bitcoin, Laravel, Design, Blockchain, Ethereum Feb 19, 2018 Feb 19, 20183d 11h €613
Need a test software to simulate SHA 256 cryptocurrency Hash Rate Hi everyone, We are launching a Cryptocurrency SHA 256 Mining Pool website and system and we need to run some test to get the proper hash rate(per miner received), in other word we just want to test the receiving the hash rate that the mining software is sending, we believe it send only numbers of their speed which is what we need to simulate, It is like a simulator to run test speed to mak... 6 Linux, Software Arkitektur, Bitcoin Feb 19, 2018 Feb 19, 20183d 8h €361
ASIC Bitcoin Design, Research, Development We have budget to make ASIC. Let me know how to build and production ASIC. we want to know how to make bitcoin ASIC device. we have budget for making ASIC product. we also Want to know EMS company to publish ASIC 9 C programmering, Bitcoin, Ethereum Feb 19, 2018 Feb 19, 20183d 2h €161378
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