Bitcoin Jobs og konkurrencer

You can earn money at 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

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, 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.

Tilmeld dig og begynd at tjene penge
Tilmeld dig og kom i gang med at tjene. Er du a Bitcoin Expert? Du kan tjene penge ved at arbejde på disse jobs!

Gennemse jobs på Freelancer

Projekt/konkurrence Beskrivelse Bud/Indlæg Færdigheder Påbegyndt Slutter Pris (EUR)
Trading and bitcoin expert I'm looking for someone who can send 0.02bitcoins wich means about $150 I'm ready to pay 250$ in advance) here,, but i need the funds in next hours 0 Bitcoin, Blockchain, Laravel, PHP, Web Design Apr 19, 2018 I dag2d 23h €8
Hardfork of a POW coin to add MasterNodes We have a coin which is POW running on two exchanges, we want to do a hard fork to introduce Master [url fjernet, log ind for visning] master Nodes setup should be such that it should distrubute 45% mining block reward to miners, and 45% to Master nodes, and 10% for gevernance. Plus there should be a server whhere users should be able to track their Masternode Server and status. Master Node sshou... 4 C++ Programmering, Bitcoin Apr 19, 2018 I dag6d 23h €524
180420 Technical Report Need to write a report on blockchain. Expected to have deep knowledge on blockchain technology 4 Rapport Skrivning, Bitcoin, Blockchain, Ethereum Apr 19, 2018 I dag6d 19h €14
Looking for Part Time Bitcoin-Cryptocurrency Analyst/Advisor About us: We are a small company looking to get in to Cryptocurrency investments Position: Ongoing, 10-15 hours per week What we are looking for: If you are interested in this position - Please be able to complete the following at least 3 times a week. 1. Analyze and prepare reports on all coins of perceived interest. Including, but not limited to: a. What is the main benefit of the ... 10 Research, Web Skrabning, Teknisk Forfatning, Analyse, Bitcoin Apr 19, 2018 I dag6d 16h €15
Blockchain-Free Currency (DAG or own Payment Network - P2P) Public Shared Ledger - DLT I want to create an cryptocurrency with fast transaction/high transaction output for Micro-Transactions with shared public ledger (DLT - Distributed Ledger Technology) for this project to be viable we need an alternative currency wihout blocksize and scalability issues. Directed acyclic graph (DAG) or own transaction protocol. + Minimize storage (Full node - Ledger Storage etc) + High transact... 8 Linux, C++ Programmering, Bitcoin, JSON, Blockchain Apr 19, 2018 I dag6d 15h €762
Bot cryptocurrencies I want to build a cryptocurrency bot for all currencies e for several exchanges example [url fjernet, log ind for visning] 10 Bitcoin, Blockchain, Ethereum Apr 19, 2018 I dag6d 11h €3387
Looking for block chain expert (developer) Hello. i am looking for block chain expert. i would like to create block chain system and it's new coin. if you know about [url fjernet, log ind for visning], it will be much helpful for this project. this project is for developing kind of [url fjernet, log ind for visning] website. same way but little different business model. mostly, when user write a post, they can get coins and able ... 29 PHP, Javascript, HTML, Bitcoin, Blockchain Apr 19, 2018 I dag6d 11h €7046
premining pow/pos masternode coins which i created Hello. i need to premine my own coins. i don't know how to premine. i am looking a freelancer who can premine my coin. Thanks 4 Kryptografi, Bitcoin, Ethereum Apr 19, 2018 I dag6d 3h €297
Android and iOS blockchain app needed ASAP I need an Android and iOS app. I would like it designed and built. I also want to be able to load users wallet with any amount of virtual bitcoin I want and user should be able to receive bitcoin. 39 Mobile App Development, Android, Bitcoin, Blockchain Apr 19, 2018 I dag6d 2h €554
Android Blockchain App I need an Android app. I would like it designed and built. The app should be like blockchain or coinbase . users should be able to create wallet and receive bitcoin and ethereum on it and also send out . 31 Mobile App Development, Android, Bitcoin, Blockchain Apr 19, 2018 I dag6d 1h €566
Selling a promising idea in the bitcoin industry. I have an idea related to bitcoin, creating a promising product in which people will invest good money (this is a very useful product for our world). The project is promising, there is a full plan for implementing the idea, all positive and negative qualities of the product will be transferred to the future owner of a successful company. 10 PHP, Web Design, eHandel, HTML, Bitcoin Apr 18, 2018 Apr 18, 20185d 15h €574
bitcoin mining and investment Hello there, I am a highly skilled account manager/miner looking for a serious person i can trade for. The great thing with Bitcoin Mining is that you can win every hour 80-90% on your money. I have a strong track record of winning on this type of trading. You can trade the forex, options, gold, bitcoin.... I do not need someone who does not know what Binary Options are. Have you ever ... 5 Metahandel, Bitcoin Apr 18, 2018 Apr 18, 20185d 14h €603
Trading and bitcoin expert To make sure everybody fully understands what I am expecting I will explain it now in details and I hope you all read it to the end. You need to be experienced with blockchains, bitcoins and trading platforms. So , all i need now are 100$-500$ in btc . Im ready to pay here almost double for the amount you can provide me there. Also im ready to pay here first the milestone for sure ., then you c... 7 Bitcoin, Ethereum, Grafisk Design, Illustrator, Oversættelse Apr 18, 2018 Apr 18, 20185d 14h €173
Bitcoin Exchange like Coinbase with algorithm We have a very profitable strategy for trading bitcoin on the 15 minute charts. We want to provide an app which trades this strategy automatically for customers. The app would buy and sell btcusd according to the algorithm. It needs to look like coinbase be simple to use and to have the bitcion managed by the bot making a simple consent and agree box. 22 Bitcoin Apr 18, 2018 Apr 18, 20185d 9h €1056
Need help understanding cryptocurrency ERC20 token creation tutorial, troubleshooting potential error Hello, I've followed the following tutorial titled "How absolutely anyone can create a cryptocurrency in 60 seconds" exactly, but cannot 100% get it to work. In MyEtherWallet when I try to view the created Token it states "(error_21) Not a valid ERC-20 token" -- Please could you test the tutorial advising where the error is? How can I see the created token balance, and th... 1 Bitcoin, Blockchain, Ethereum Apr 18, 2018 Apr 18, 20185d 4h €16
Cryptocurrency Code Maintenance Looking for crypto expert or team to assist in evaluating, improving, upgrading, and maintaining the code of an existing popular alt-currency. Need review and maintenance of existing code and recompiled wallets for Windows, MacOS, Linux versions. This is a Bitcoin variation, not Ethereum. Should be experienced with cryptocurrencies, C, C++, Blockchains, QT, Agile, Github, Masternodes, wallets. A p... 19 C++ Programmering, Bitcoin, Qt Apr 17, 2018 Apr 17, 20184d 21h €1159
Assistants with decent English needed I have tons of works to handle so I need an assistant. Successful candidate should have proficiency with computer. Should have fluency in English and Male assistants preferred! 63 Databehandling, Dataindførsel, Websøgning, Kopi Indtastning, Bitcoin Apr 17, 2018 Apr 17, 20184d 18h €15
Bitcoin Paid Surfing Site Looking for a developer that can create a site just like clixcoin. Users should be able to surf ads for crytocurrency and advertisers pay in cryptocurrency. 15 PHP, Javascript, Web Design, HTML, Bitcoin Apr 17, 2018 Apr 17, 20184d 17h €344
Data 'Input & Output' application, done on ETH blockchain smart-contract We are looking for ''Full stack Ethereum Blockchain Developer & or Developer Team''. The entire APPLICATION process will work totally depending on the Ethereum blockchain, as that is what most of the already deployed code does. NO TOKENS should be made at all because this would just complicate the process, and, by our current understanding & research does not co... 24 Javascript, Python, Bitcoin, Blockchain, Ethereum Apr 17, 2018 Apr 17, 20184d 16h €2070
PHP Developer required for Existing Cryptocurrency Exchange Looking for a developer experienced in PHP Laravel framework to complete an existing Cryptocurrency exchange web app. Need to fix a few functions on the web application. Please reach back for more information 58 PHP, Software Arkitektur, Bitcoin, Laravel, API Apr 17, 2018 Apr 17, 20184d 14h €11
Development of Decentralised Cryto Exchange I want to develop a Decentralised Cryptocurrency Exchange using [url fjernet, log ind for visning] These are the details. Project Managers don't apply. Only those going to do the work apply. _________________________________ ​ Decentralised Cryptoexchange We will be registered reporting institution to authorities as requested. . Deposits/ Withdrawals . Deposit using BTC. Minimum D... 22 PHP, Software Arkitektur, MySQL, HTML, Bitcoin Apr 17, 2018 Apr 17, 20184d 8h €1305
Need a simple faucet script for altcoin As mentioned in the title, i need a simple faucet scrip for an altcoin. The script should only have a field to enter a wallet address and a submit button with captcha. The scrip needs to prevent abuse by restricting the number of payouts per day by detecting the IP address. It must be created in php. Design is not required. Simple as that. To be sure that you have read the requirements start yo... 5 PHP, MySQL, Bitcoin, Blockchain, Ethereum Apr 17, 2018 Apr 17, 20184d 8h €33
Crypto Coin with masternode i want to create coin with reward masternode system 5 Algoritme, Bitcoin, Blockchain Apr 17, 2018 Apr 17, 20184d 6h €538
Cryptocurrency POW POS + Masterdnood Looking for blockchain dev , who will be able to assit to make new fork of cryptocurrency based on one of mining algo with Masternodes or, POS + Masternodes 36 C++ Programmering, Bitcoin, Blockchain, Ethereum, Full Stack Development Apr 17, 2018 Apr 17, 20184d 4h €1232
node.js, Bitcoin, Ionic Framework, Payment Gateway Integration, API Apr 16, 2018 Apr 16, 20183d 23h
Create Payment Gateway CryptoCurrency - RPC Hello, We looking an expert in RPC and PHP / NODE.JS with good knowleadge of crypto currency for create an simple payment gateway for Bitcoin / Etherum, Ferrum coin and Numus coin, like this : [url fjernet, log ind for visning] We want allow visitor of an website pay in, ferrum or numus coin and the owner of website or seller of product receive the payment. We will hire only expert w... 23 PHP, node.js, Bitcoin, Socket IO, Ethereum Apr 16, 2018 Apr 16, 20183d 21h €357
Daemon instance 0 rejected a supposedly valid block Hello. i am going to make pow/pos masternode coin. i have changed only some parameters from basic coin. And i have installed nomp pool on vps server. when i mine coins in pow phase, nomp says that "Daemon instance 0 rejected a supposedly valid block. " All block was rejecting now. [url fjernet, log ind for visning] says as follows: ERROR: CheckBlock() : first tx is not coinbase ... 3 Linux, Kryptografi, Bitcoin, Ubuntu, Ethereum Apr 16, 2018 Apr 16, 20183d 20h €533
Bitcoin wallet iOS and Android App I am looking for a professional bitcoin developer to design and build my bitcoin wallet application. You should have experience working with bitcoin project and blockchain. Apply with clear and detailed explanation on how you will do this job by answering their questions. 1. Describe the architecture you will use 2. hosting service you will use. 3. programming languages you plan to use 4. Wallet... 24 Bitcoin, Blockchain Apr 16, 2018 Apr 16, 20183d 19h €2457
Bolinger Band Bot for GDAX Looking for a bot that will trade on Bolinger Band levels, RSI levels and MACD levels. Would like to trade in 15 minute intervals at most. 8 Kryptografi, Bitcoin Apr 16, 2018 Apr 16, 20183d 14h €1008
SEO Article on Ontology Need someone who knows Ontology Network in depth. Looking for long term writer. 4 Web Design, Kryptografi, HTML, Bitcoin, Blockchain Apr 16, 2018 Apr 16, 20183d 8h €27
Ethereum Smartcontract Development Hello there, We need solidity developer who is having good experience in developing ethereum smart contracts. start your reply by mentioning "i read this" to make sure you really read my requirement. Thanks 11 PHP, HTML, Bitcoin, Blockchain, Ethereum Apr 16, 2018 Apr 16, 20183d 4h €135
Bitcoin Simulator Game on Unity I need someone who have bitcoin [url fjernet, log ind for visning] is because we have to test using by wallet. Let me know if you have bitcoin wallet and very familiar with gaming using bitcoin. 15 PHP, C# Programmering, Software Arkitektur, Bitcoin, Spiludvikling Apr 16, 2018 Apr 16, 20183d 1h €28
Fix the problem of Electrum Api on PHP and Linux Hi everyone. I'm looking for an experienced developer in Electrum Api. Electrum Api was installed on the VPS(Ubuntu 16) and i saw an code error. ***u will see error -----START DIGITAL SIGNATURE-----*** Electrum API returned error: `Server error: File "/usr/local/lib/python3.5/dist-packages/electrum/[url fjernet, log ind for visning]", line 135, in pw_decode | [url fjernet, log... 11 PHP, Linux, Software Arkitektur, Bitcoin, Ubuntu Apr 16, 2018 Apr 16, 20183d 1h €88
Understand how Bitfinex calculates transactions? By adding all of my transactions that the API returns, I can not find the result that I have in my balance. Example with IOTA: My balance is 281.64315651000 IOTA (return by /v1/balances) List of transactions (return by /v1/mytrades): [ {"Price": "0.0002993", "amount", "79.28790511", "timestamp", "1513796864.0", "type&qu... 1 Metahandel, Kryptografi, Bitcoin, Blockchain, Ethereum Apr 15, 2018 Apr 15, 20182d 5h €111
Blockchain Expert Required Urgently I need multipool server with next coins: ETH - ETP - PIRL - EXP - MUSIC - UBQ - ETC – ELLA Also i need next coins: Monero (CryptoNightV7) i Zcash (Equihash) If not possible to put all on one server well we install on 2 servers First coins is all ethash coins and i pretty sure can be on one server Other coins is cryptonight and Zcash… Server must be qualitative&nbs... 13 PHP, System Administrator, Linux, Bitcoin, Blockchain Apr 15, 2018 Apr 15, 20182d 2h €2043
small platform integrate with binance cryptocurrency small platform integrate with binance cryptocurrency the propose of this platform allow the user to trade via binance api based on my trade advise for the they user. 14 Python, Software Arkitektur, Bitcoin Apr 15, 2018 Apr 15, 20182d 2h €369
Ledger Nano S Support for Neutron Coin Looking to get Ledger Nano S Support for Neutron Coin. 9 Bitcoin, Coding, Blockchain Apr 14, 2018 Apr 14, 20181d 22h €924
Blockchain Need someone who can incorporate Blockchain 18 Oracle, Bitcoin Apr 14, 2018 Apr 14, 20181d 15h €2555
Crypto Price Prediction Game A Cryptocurrency price prediction game where a user can bet on major cryptocurrencies like Bitcoin, Ether, Litecoin, DigitalCash and Monero and see where their prices go in the short term. The game results are recorded in cookies, so you will be able to continue from where you stopped last time. Demo: [url fjernet, log ind for visning] My requirement: I want users to play this game by bett... 15 PHP, CSS, Bitcoin, Blockchain, Ethereum Apr 14, 2018 Apr 14, 20181d 14h €1206
Need a crypto dev for a game You must be an experienced developer in cryptos. You must have worked in cryptos before. You will do backend and frontend. You must have experience with design. You will have to edit casino scripts too, so you must have knowledge in casinos games. Cryptos experience : BTC ETH LTC BCH XMR DOGE NANO NEO VERGE VEN OMG XLM Not interested to use 3rd party site as gateway to manage deposit / wit... 21 PHP, Javascript, Kryptografi, Bitcoin, Ethereum Apr 14, 2018 Apr 14, 20181d 5h €5327
Industrial Blockchain Technology Development Please read the job description below very well before you bid. Understand the requirements clearly. If you are capable of performing the task and have the right experience, then send in your comprehensive technical proposal, detailing all features of the blockchain and processes with costing. We are looking for Blockchain developer who can develop an industrial Blockchain Technology specially en... 31 CSS, C++ Programmering, Bitcoin, Blockchain, Ethereum Apr 13, 2018 Apr 13, 201818h 29m €28477 Blockchain Creating BTC/EUR exchange and BTC Anchor I am planning to create a certified anchor of BTC and EUR on the Stellar blockchain. 13 PHP, Web Design, Software Arkitektur, HTML, Bitcoin Apr 13, 2018 Apr 13, 201817h 5m €14
Core team members for an ICO cryptocurrency Hi mates. We are now looking for remote core members for our upcoming ICO. We have already built our platform with all of outstanding tools and marketing plans to make our ICO successful, include spamming, spreading, creating FOMO by a crowd, etc.. We now are in need of - 2 Blockchain Developer : Who knows well about blockchain, you will give us your ideas about blockchain improvement and its ... 35 PHP, Grafisk Design, Internet Markedsføring, Logo Design, Bitcoin Apr 13, 2018 Apr 13, 201814h 38m €400
Project for Bogdan S. Hi Bogdan S., I noticed your profile and would like to offer you my project. We can discuss any details over chat. 2 Algoritme, , Bitcoin, Angular.js, Blockchain, Ethereum Apr 13, 2018 Apr 13, 20183d 10h €203
Online Payment service i need online payment service 100% like [url fjernet, log ind for visning] please check this site. have 2 panel. Admin Agent Admin: agent list and more data like reedem voucher code or buy voucher code ,... and more option agent: buy voucher code(by perfectmoney , webmoney , paypal ,...) see buy/sell(reedem) ,... voucher Type (USD , ERU , BTC , .... all unit) all voucher ... 20 PHP, MySQL, Yii, Bitcoin, Payment Gateway Integration Apr 12, 2018 Apr 12, 2018Udløbet €285
I need a bitcoin expert I will discuss with candidates in detail 29 PHP, Web Design, Software Arkitektur, HTML, Bitcoin Apr 12, 2018 Apr 12, 2018Udløbet €570
I want you to create a new cryptographic currency with open source, based on ethereum Hello. I want you to create a new cryptographic currency with open source, based on ethereum. GitHub license You will develop the solution Crypto ICO (Initial Coin Offering): trade, lending, affiliate marketing. Bitcoin Wallet Development, Crypto Coin Creation, Crypto Coin Mining, Bitcoin Pool Mining, Crypto Coin Explorer, Development of monetization, Coin Web Wallet, Blockchain Develop... 27 PHP, C programmering, Software Arkitektur, C++ Programmering, Bitcoin Apr 12, 2018 Apr 12, 2018Udløbet €763
Build MLM binary website using Bitcoin payment gateway Need to build MLM binary website that has investment plan Compensation plan only have 2 type of bonus, direct referral and binary For investment, admin can set variable interest daily and will display at user dashboard Deposit and withdrawal using Bitcoin and ETH only Please bid if you have already build MLM website. And demo is must, strictly for developer who has build MLM website and able... 27 PHP, MLM, MySQL, HTML, Bitcoin Apr 12, 2018 Apr 12, 2018Udløbet €2327
ERC 20 Token for ICO with contract I need an ERC-20 token created with contract and must be verified on etherscan. will give you details of token in chat. ***ONLY BID if you have created tokens before 27 Kryptografi, Bitcoin, Blockchain, Ethereum Apr 11, 2018 Apr 11, 2018Udløbet €586
ICO expert needed Tell me what talents and insights you have to offer. 6 Annoncering, Bitcoin, Blockchain, Ethereum Apr 11, 2018 Apr 11, 2018Udløbet €87
Showing 1 to 50 of 857 entries
« 1 2 3 4 5 »