Bitcoin Työt ja kilpailut

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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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Selaa työpaikkoja Freelancerissa

Projekti/Kilpailu Kuvaus Tarjouksia/töitä Taitoja Alkoi Loppuu Hinta (EUR)
Looking for EXPERT blockchain developer to join our Experiencececoin Project We are a team of blockchain developers looking to add more people to the team. We want to grow the team and are looking for expert Blockchain developers to join our team. You must have experience in Blockchain Lightning Network Smart Contracts Decentralized Applications Bitcoin/Litecoin Code base You can learn more about our project here: [osoite poistettu, kirjaudu sisää... 5 Salaustekniikat, Bitcoin, Blockchain, Ethereum Feb 25, 2018 Tänään6 pv 22 h €1057
Build me a peer to per website I'm strictly looking for someone who's done a peer to peer investment system before. I need a site, where peers give help to each other financially. A peer goes and pledges a donation and we allocate his donation to another who is seeking that help. They must be able to login to the system using their credentials. They go and pledge an amount to invest, then are given a Peer to pay t0 , ... 10 verkkosivujen suunnittelu, graafinen suunnittelu, HTML, Web hosting, Bitcoin Feb 25, 2018 Tänään6 pv 22 h €390
Build Development ICO Website Complete User/Admin Panel + ICO Program (Stage Wise) + multi Wallet Gateway Integration + Affiliate 15 PHP, Javascript, Bitcoin, Angular.js, Blockchain Feb 25, 2018 Tänään6 pv 19 h €1022
Cryptocurrency MLM Software Cryptocurrency MLM Software with a currency exchange website upheld gateways and crypto currencies such as Bitcoin, Litecoin, Ethereum. (Wallet System, Deposit System, Wallet Transactions, Withdrawal framework, Send cash from wallet to client in site). Lovely, simple, and secure user interface. 13 PHP, verkkosivujen suunnittelu, tietojärjestelmäarkkitehtuuri, HTML, Bitcoin Feb 25, 2018 Tänään6 pv 19 h -
Telegram Group Promotion - Cryptocurrency, ICO, Blockchain - Active Members Hi, I created a blockchain and cryptocurrency related Telegram group. I look to get 10000+ relevant active members in this group within 1-2 weeks from now. For that i require someone who can promote it in the most effective way possible. The plan is to get real and genuine ICO/cryptocurrency/blockchain people and investors into it. I will only accept people who have done this before. Telegra... 4 verkkomainonta, Bitcoin, Markkinointi sosiaalisessa mediassa, Blockchain Feb 25, 2018 Tänään6 pv 18 h €6251
Create Own CryptoCurrency Coin Complete find to get a few different technologies and create a new cryptocurrency with the purpose of having masternodes, privacy features, zero transaction fees, and fast transaction time... Setup own Cryptocurrency for our online payment processing business... I need Expert developer .. Project like Ripple or other similar blockchain for us... core requirements are as follows: • 90... 9 PHP, Javascript, C++ -ohjelmointi, Bitcoin, Blockchain Feb 25, 2018 Tänään7 pv 15 h €2725
Create an Initial Coin Offering (ICO) and a website for it Hello, We are looking for someone who can create an ICO. In addition, you should be able to design a secure website for our ICO We want to enable payments using BTC, ETH and credit cards to be flexible for our customers Best, Hasan 12 HTML, Bitcoin, Ohjelmointi, Ethereum Feb 25, 2018 Tänään6 pv 12 h €963
Multi Cryptocurrency Exchange platform We are based out of India (Bangalore) and are looking to have a cryptocurrency exchange platform developed mainly for Indian consumers. As the subject line reads, it's going to be a multi cryptocurrency exchange with at least 30 coins (BTC, BCH, XRP, ETH, LTC, OMG, REQ, QTUM, 22 more coins which can be discussed once we go to the next level). I will be briefing just the top line requirements ... 9 PHP, C-ohjelmointi, verkkosivujen suunnittelu, tietojärjestelmäarkkitehtuuri, Bitcoin Feb 25, 2018 Tänään6 pv 8 h €3419
bitcoin faucet using spiner Unlike the most faucets users wont need to solve captcha... they need to spin, will accumulate spin balance -a shortner like adfly, mellowads shortener should show up before be able to spin -should be a shop were users can customize their spinner(cost into satoshis or spiner coins) Once users acess the website coinhive should start to mine(hiden) all spiner balance will be exchanged daily at 00:... 12 PHP, Javascript, verkkosivujen suunnittelu, HTML, Bitcoin Feb 24, 2018 Feb 24, 20185 pv 20 h €497
fork bitcoin I need a developer to fork bitcoin into a new cryptocurrency with wallet. 11 Bitcoin, Blockchain, Ethereum Feb 24, 2018 Feb 24, 20185 pv 14 h €1210
Ethereum Smart Contract Expert Needed Looking for an ethereum smart contract expert to add an ERC-20 token to a wallet 12 Bitcoin, Ethereum Feb 24, 2018 Feb 24, 20185 pv 11 h €20
create a website for Bitcoin, Ethereum, Ripple wallet with send and receive options We need to create a website for Bitcoin, Ethereum, Ripple wallet with send and receive options. 10 PHP, verkkosivujen suunnittelu, HTML, Bitcoin, Blockchain Feb 24, 2018 Feb 24, 20185 pv 11 h €971
Teach how to create a new crypto currency Need some one to teach me how to create a new currency by using bitcoin repository, I did this for old version of litecoin 4 Salaustekniikat, Bitcoin, Blockchain Feb 24, 2018 Feb 24, 20185 pv 10 h €27
Project for Ruihe R. Ruihe, I'm looking for an explanation about how to build a blockchain in python. How do I create a decentralised network, create a wallet, and PoS. The discussion will be for a few hours. Are you interested? 1 Python, tietojärjestelmäarkkitehtuuri, , Bitcoin, Blockchain, Ethereum Feb 23, 2018 Feb 23, 20188 pv 5 h €17
Data website with discussion board. I need a new website. News and information website to pull api data from cryptocurrency data websites. I need to built around flarum php open source discussion board [osoite poistettu, kirjaudu sisään nähdäksesi] Reference landing page for info/news [osoite poistettu, kirjaudu sisään nähdäksesi] [osoite poistettu, kirjaudu sisään nähdäkse... 36 PHP, Bitcoin, Laravel, Angular.js, API Feb 23, 2018 Feb 23, 20184 pv 23 h €993
Build a P2P cryptocurrency exchange like Localbitcoins.com Build a P2P cryptocurrency exchange like Localbitcoins.com. Cryptocurrencies: BTC,ETH,USDT Fiat: USD,AED,SAR Language: English Payment Method: Wire Transfer Notifications and chat Wallets for the cryptocurrencies (Send, Receive,Store) 2F Authenticator PS: Check [osoite poistettu, kirjaudu sisään nähdäksesi] and read it's guide and specifications before contactin... 25 PHP, Javascript, tietojärjestelmäarkkitehtuuri, HTML, Bitcoin Feb 23, 2018 Feb 23, 20184 pv 21 h €2619
Create masternode DASH x11 fork cryptocurrency We are a team of web designers and and social media marketers who are looking for a talented developer to join us in creating a new exciting masternode cryptocurrency. We are looking for 1/2 developers. A share of the coins premise will be an option for the right developer as well as future input into the project. The project will be launched with Twitter, Discord, Slack etc. If you are familia... 13 C-ohjelmointi, Bitcoin, Koodaus, Blockchain, Ethereum Feb 23, 2018 Feb 23, 20184 pv 18 h €4208
BitCoin work I am looking for designers, programmers familiar with the blockchain system. 15 PHP, verkkosivujen suunnittelu, graafinen suunnittelu, HTML, Bitcoin Feb 23, 2018 Feb 23, 20184 pv 18 h €5797
Blockchain Development-ICO Blockchain Development-Initial coin offering: Here is a list I require for Block chain development for My IDEA/Upcoming Startup. Basically I want to run my ICO for my IDEA .Any experience development profession who can build all tech related stuff to offer ICO to Other needed. I need complete proposal which developer will provide from start to end.. 15 Java, Bitcoin, Blockchain, Ethereum Feb 23, 2018 Feb 23, 20184 pv 17 h €2749
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: [osoite poistettu, kirjaudu sisään nähdäksesi] or [osoite poistettu, kirjaudu sisään nähdäksesi] Those link a... 15 Verkkoturva, Bitcoin, Ohjelmointi, Blockchain, Ethereum Feb 23, 2018 Feb 23, 20184 pv 14 h €608
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... 7 hakukoneoptimointi, liidit, Bitcoin, Ethereum, SEO Writing Feb 23, 2018 Feb 23, 20184 pv 12 h €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, verkkosivujen suunnittelu, HTML, Kuvakesuunnittelu, Bitcoin Feb 22, 2018 Feb 22, 20184 pv 6 h €164
Fork Cryptocurrency DASH or PIVX Need fork of dash/pivx with working wallet 9 Bitcoin, Ethereum Feb 22, 2018 Feb 22, 20184 pv €3862
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. 8 Bitcoin, Koodaus, Ethereum Feb 22, 2018 Feb 22, 20184 pv €934
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 15 PHP, node.js, Bitcoin, Blockchain Feb 22, 2018 Feb 22, 20183 pv 23 h €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, HTML5, , Bitcoin, Web Development Feb 22, 2018 Feb 22, 20186 pv 21 h €129
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... 32 PHP, tietojärjestelmäarkkitehtuuri, MySQL, Bitcoin, Ethereum Feb 22, 2018 Feb 22, 20183 pv 20 h €1844
Research Crypto software research Just make a project for research for cryptocurrency platform and give skills Blockchain, cryptocurrency, Bitcoin, ethereum 10 Salaustekniikat, Bitcoin, Ohjelmistokehitys, Blockchain, Ethereum Feb 22, 2018 Feb 22, 20183 pv 20 h €158
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. 19 Bitcoin, Ethereum Feb 22, 2018 Feb 22, 20183 pv 19 h €1023
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 10 PHP, Javascript, tietojärjestelmäarkkitehtuuri, MySQL, Bitcoin Feb 22, 2018 Feb 22, 20183 pv 17 h €2161
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... 34 node.js, Bitcoin, Blockchain, Ethereum Feb 22, 2018 Feb 22, 20183 pv 11 h €5019
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 ... 13 Bitcoin, Blockchain Feb 22, 2018 Feb 22, 20183 pv 10 h €280
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-ohjelmointi, Big Data, Bitcoin, Ohjelmointi, Blockchain Feb 22, 2018 Feb 22, 20183 pv 8 h €853
Build Bitcoin online Wallet Build Bitcoin online Wallet In php .. 39 PHP, Salaustekniikat, Bitcoin Feb 21, 2018 Feb 21, 20183 pv 5 h €4346
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. 22 PHP, Javascript, tietojärjestelmäarkkitehtuuri, MySQL, Bitcoin Feb 21, 2018 Feb 21, 20183 pv 5 h €318
Cryptocurrency exchange platform I'm looking for talented designer and developer who has experienced in Cryptocurrency exchange platform. Here are referenced links : [osoite poistettu, kirjaudu sisään nähdäksesi] robinhood has got very good Interface : [osoite poistettu, kirjaudu sisään nähdäksesi] What's your best estimate? 28 PHP, verkkosivujen suunnittelu, graafinen suunnittelu, tietojärjestelmäarkkitehtuuri, Bitcoin Feb 21, 2018 Feb 21, 20183 pv 4 h €1683
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++ -ohjelmointi, Bitcoin, Ohjelmointi, Ethereum Feb 21, 2018 Feb 21, 20182 pv 21 h €6818
Looking for mining experts Looking for someone with working knowledge of mining software and configuration of rigs. 4 Salaustekniikat, Bitcoin Feb 21, 2018 Feb 21, 20182 pv 19 h €124
Cryptocurrency mining software Similar to Minergate dot com mining software 10 Java, Windows Desktop, tietojärjestelmäarkkitehtuuri, Bitcoin, Ethereum Feb 21, 2018 Feb 21, 20182 pv 18 h €1001
Referral programme need hi, we have website php based [osoite poistettu, kirjaudu sisään nähdäksesi] 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, verkkosivujen suunnittelu, graafinen suunnittelu, HTML, Bitcoin Feb 21, 2018 Feb 21, 20182 pv 18 h €134
Website Building I need a similar website. [osoite poistettu, kirjaudu sisään nähdäksesi] I need with the live transaction chart. Download and run the site on offline. Bid if you can do it. 19 PHP, Javascript, verkkosivujen suunnittelu, HTML, Bitcoin Feb 21, 2018 Feb 21, 20182 pv 18 h €133
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 Algoritmi, Tilastotiede, Matematiikka, Bitcoin Feb 21, 2018 Feb 21, 20182 pv 17 h €416
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, 20182 pv 14 h €912
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 Salaustekniikat, C++ -ohjelmointi, node.js, Bitcoin, Ethereum Feb 21, 2018 Feb 21, 20182 pv 13 h €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, HTML5, Bitcoin, Blockchain, Ethereum Feb 21, 2018 Feb 21, 20182 pv 13 h €6118
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... 36 PHP, verkkosivujen suunnittelu, Bitcoin, Ohjelmointi Feb 21, 2018 Feb 21, 20182 pv 12 h €1444
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, 20182 pv 12 h €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... 15 Bitcoin, Blockchain, Ethereum Feb 21, 2018 Feb 21, 20182 pv 9 h €1950
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. 13 verkkomainonta, markkinointi, Bitcoin, Blockchain Feb 21, 2018 Feb 21, 20182 pv 8 h €3229
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-ohjelmointi, tietojärjestelmäarkkitehtuuri, MySQL, Bitcoin Feb 21, 2018 Feb 21, 20182 pv 7 h €131
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