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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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プロジェクト / コンテスト 詳細 入札 / エントリー スキル 開始日 終了日 価格(JPY)
Crypto currency specialist Someone who is exceptional good at trading in crypto currency ( forex trading is a bonus) Full time or part time available 9 暗号化, ビットコイン, Blockchain, Ethereum Feb 23, 2018 本日6日 23時間 ¥4032
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! 11 ビットコイン, App Developer, Blockchain, Ethereum Feb 23, 2018 本日6日 23時間 ¥179699
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が削除済みです、ログインして表示してください] or [URLが削除済みです、ログインして表示してください] Those link above teach and show how to do. The specifications I will send later. It ... 6 ウェブセキュリティ, ビットコイン, Programming, Blockchain, Ethereum Feb 23, 2018 本日6日 21時間 ¥63255
Create dice game bitcoins i need someone can create script site like [URLが削除済みです、ログインして表示してください] or [URLが削除済みです、ログインして表示してください] and someone know about bitcoins, if you know and can do it just the bid. 10 PHP, Javascript, ウェブサイトのデザイン, HTML, ビットコイン Feb 23, 2018 本日6日 20時間 ¥87189
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, リード, ビットコイン, Ethereum, SEO Writing Feb 23, 2018 本日6日 20時間 ¥2564
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, ウェブサイトのデザイン, HTML, アイコンデザイン, ビットコイン Feb 22, 2018 本日6日 14時間 ¥21584
Fork Cryptocurrency DASH or PIVX Need fork of dash/pivx with working wallet 5 ビットコイン, Ethereum Feb 22, 2018 本日6日 8時間 ¥595812
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 ビットコイン, Coding, Ethereum Feb 22, 2018 本日6日 7時間 ¥90310
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, ビットコイン, Blockchain Feb 22, 2018 本日6日 6時間 ¥2199
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, , ビットコイン, Web Development Feb 22, 2018 本日9日 4時間 ¥16882
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... 26 PHP, ソフトウェアアーキテクチャ, MySQL, ビットコイン, Ethereum Feb 22, 2018 本日6日 4時間 ¥249920
Research Crypto software research Just make a project for research for cryptocurrency platform and give skills Blockchain, cryptocurrency, Bitcoin, ethereum 7 暗号化, ビットコイン, ソフトウェア開発, Blockchain, Ethereum Feb 22, 2018 本日6日 4時間 ¥15066
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 ビットコイン, Ethereum Feb 22, 2018 本日6日 3時間 ¥137194
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. 32 Adobe Flash, グラフィックデザイン, アニメーション, 3Dアニメーション, ビットコイン Feb 22, 2018 本日6日 2時間 ¥41885
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, ソフトウェアアーキテクチャ, MySQL, ビットコイン Feb 22, 2018 本日6日 ¥264819
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, ビットコイン, Blockchain, Ethereum Feb 22, 2018 Feb 22, 20185日 18時間 ¥672721
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 ビットコイン, Blockchain Feb 22, 2018 Feb 22, 20185日 18時間 ¥38466
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 プログラミング, ビッグデータ, ビットコイン, Programming, Blockchain Feb 22, 2018 Feb 22, 20185日 16時間 ¥112085
Build Bitcoin online Wallet Build Bitcoin online Wallet In php .. 37 PHP, 暗号化, ビットコイン Feb 21, 2018 Feb 21, 20185日 13時間 ¥580285
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, ソフトウェアアーキテクチャ, MySQL, ビットコイン Feb 21, 2018 Feb 21, 20185日 13時間 ¥41724
Cryptocurrency exchange platform I'm looking for talented designer and developer who has experienced in Cryptocurrency exchange platform. Here are referenced links : [URLが削除済みです、ログインして表示してください] robinhood has got very good Interface : [URLが削除済みです、ログインして表示してください] What's your best estimate? 27 PHP, ウェブサイトのデザイン, グラフィックデザイン, ソフトウェアアーキテクチャ, ビットコイン Feb 21, 2018 Feb 21, 20185日 12時間 ¥207287
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++プログラミング, ビットコイン, Programming, Ethereum Feb 21, 2018 Feb 21, 20185日 5時間 ¥895609
Looking for mining experts Looking for someone with working knowledge of mining software and configuration of rigs. 4 暗号化, ビットコイン Feb 21, 2018 Feb 21, 20185日 2時間 ¥16348
Cryptocurrency mining software Similar to Minergate dot com mining software 9 Java, ウィンドウズデスクトップ, ソフトウェアアーキテクチャ, ビットコイン, Ethereum Feb 21, 2018 Feb 21, 20185日 2時間 ¥122235
Referral programme need hi, we have website php based [URLが削除済みです、ログインして表示してください] 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, ウェブサイトのデザイン, グラフィックデザイン, HTML, ビットコイン Feb 21, 2018 Feb 21, 20185日 2時間 ¥17520
Website Building I need a similar website. [URLが削除済みです、ログインして表示してください] I need with the live transaction chart. Download and run the site on offline. Bid if you can do it. 18 PHP, Javascript, ウェブサイトのデザイン, HTML, ビットコイン Feb 21, 2018 Feb 21, 20185日 1時間 ¥16989
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 アルゴリズム, 統計, 数学, ビットコイン Feb 21, 2018 Feb 21, 20185日 1時間 ¥54600
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が削除済みです、ログインして表示してください]) 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 lin... 13 C#プログラミング, ソフトウェアアーキテクチャ, ビットコイン Feb 21, 2018 Feb 21, 20185日 ¥72605
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 ビットコイン, Ethereum Feb 21, 2018 Feb 21, 20184日 21時間 ¥119778
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 暗号化, C++プログラミング, node.js, ビットコイン, Ethereum Feb 21, 2018 Feb 21, 20184日 21時間 ¥97981
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, ビットコイン, Blockchain, Ethereum Feb 21, 2018 Feb 21, 20184日 20時間 ¥803611
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, ウェブサイトのデザイン, ビットコイン, Programming Feb 21, 2018 Feb 21, 20184日 20時間 ¥157684
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, ビットコイン, Web Development Feb 21, 2018 Feb 21, 20184日 20時間 ¥24575
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 ビットコイン, Blockchain, Ethereum Feb 21, 2018 Feb 21, 20184日 17時間 ¥270114
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 インターネットマーケティング, マーケティング, ビットコイン, Blockchain Feb 21, 2018 Feb 21, 20184日 16時間 ¥432845
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 プログラミング, ソフトウェアアーキテクチャ, MySQL, ビットコイン Feb 21, 2018 Feb 21, 20184日 15時間 ¥17203
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 ビットコイン Feb 20, 2018 Feb 20, 20184日 13時間 ¥1282
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 システム管理, Linux, MySQL, VPS, ビットコイン Feb 20, 2018 Feb 20, 20184日 11時間 ¥335613
Crypto currancey Etherium AlT coins Java Browser Online Miner [URLが削除済みです、ログインして表示してください] 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 brow... 11 PHP, Java, Javascript, ビットコイン, Blockchain Feb 20, 2018 Feb 20, 20184日 9時間 ¥2137
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が削除済みです、ログインして表示してください] [URLが削除済みです、ログインして表示してください] [URLが削除済みです、ログインして表示してください] 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... 36 Wordpress, HTML, ビットコイン, Blockchain, Ethereum Feb 20, 2018 Feb 20, 20184日 2時間 ¥5533
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, パイソン, MySQL, HTML, ビットコイン Feb 20, 2018 Feb 20, 20183日 22時間 ¥85964
Cryptocurrency Exchange Website (Designing pages are ready) ERC20 Token and minable coins like BTC, LTC and others Reference: [URLが削除済みです、ログインして表示してください] 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 you! 29 PHP, Javascript, ウェブサイトのデザイン, ソフトウェアアーキテクチャ, ビットコイン Feb 20, 2018 Feb 20, 20183日 21時間 ¥150978
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 マーケティング, マーケットリサーチ, ビットコイン, クリエイティブライティング, ビジネス文書 Feb 20, 2018 Feb 20, 20183日 21時間 ¥59903
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アニメーション, Adobe Flash, アニメーション, ビットコイン, グラフィックデザイン Feb 20, 2018 Feb 20, 20183日 21時間 ¥21370
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, ビットコイン, Angular.js, Web Development Feb 20, 2018 Feb 20, 20183日 18時間 ¥451971
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 ビットコイン, Blockchain, Ethereum Feb 20, 2018 Feb 20, 20183日 16時間 ¥60263
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 ビットコイン, Ethereum Feb 20, 2018 Feb 20, 20183日 14時間 ¥41778
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, エンジニアリング, ソフトウェアアーキテクチャ, MySQL, ビットコイン Feb 19, 2018 Feb 19, 20183日 12時間 ¥59194
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 ビットコイン, Laravel, デザイン, Blockchain, Ethereum Feb 19, 2018 Feb 19, 20183日 11時間 ¥80564
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, ソフトウェアアーキテクチャ, ビットコイン Feb 19, 2018 Feb 19, 20183日 8時間 ¥47441
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