Blockchain 工作与竞赛

Blockchain is a distributed register that is used to maintain a continuously growing list of records, called blocks. It has revolutionary applications in finance (such as cryptocurrencies like Bitcoin) and decentralized applications like online voting.
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项目/竞赛 描述 竞标数/参赛作品数 技能 已开始 结束 价格(HKD)
Build Backend for Buying/Selling Cryptocurrency The goal of the project is to understand and retrieve consulting around what is needed to develop a backend which supports buying/selling and storing crypto within 1 app. We want to develop an app similar to Coinbase but want to support more Cryptocurrencies. 9 Mobile App Development, iPhone, 软件构架, Blockchain Dec 13, 2017 今天6天 22时 $50297
Crypto cureency (alt coin) project development I want to develop a crypto currency i.e, an alternative currency wallets ICO blockchain etc., 9 密码学, Bitcoin, Blockchain Dec 13, 2017 今天6天 17时 $9007
Bkockchain consultant required Looking for a blockchain consultant who has knowledge of trading exchanges and network security. 12 Metatrader, Bitcoin, 网络管理, Blockchain Dec 13, 2017 今天6天 15时 $757
build me a crypto currency Shall attach a brief document explaining. 28 PHP, C++编程, Blockchain Dec 13, 2017 今天6天 15时 $24571
Need a blockchain app developer Hi I need to hire a blockchain app developer to make an app. I need someone with good knowledge and willing to work long term. Thanks Karishhma 4 Blockchain Dec 12, 2017 今天6天 10时 $9023
Ethereum Smart Contract Developer Need a Ethereum Smart Contracts guru to assist with the development of a smart contract. 3 合同, Blockchain, Ethereum Dec 12, 2017 今天6天 9时 $3512
multi-platform blockchain ERC20 token Project Description We are looking for someone that has already experience with pre-ICO and ICO on the ethereum blockchain (erc20). We wil USE smart contract to accept payment, We already made our token on the ethereum blockchain--100 % The whitepaper & LOGO are already made----------------------------------------80 % The server and domein are already paid--------------------------... 14 网站设计, 平面设计, Blockchain, Ethereum Dec 12, 2017 今天6天 5时 $41070
Fork an Ethereum Blockchain Using Github I need a blockchain expert only to fork an ethereum blockchain using github. More details will be shared over chat. 4 C++编程, Blockchain, Ethereum Dec 12, 2017 今天6天 3时 $2822
ICO Smart Contract Hello, Looking for an experienced blockchain / Solidity developer for building smart contracts and ERC-20 token for a startup company. This is a fairly straightforward project and relatively simple structure. At the moment we need someone to develop all of the blockchain tech from the ground up, followed by ongoing upkeep and utilizing your expertise through the ICO process as well. This pro... 25 PHP, Blockchain, Ethereum Dec 12, 2017 今天6天 2时 $35561
Project for Valentin S. Hi Valentin, How many hours would you need to translate a Javascript of about 350 lines (fairly well commented) to Lua? 1 C 编程, C# 编程, C++编程, , 应用程序开发, Blockchain Dec 12, 2017 Dec 12, 20178天 23时 $156
Need expert to Work on Saas product with Laravel Hello, We need to build saas platform based on Laravel Spark, this platform should be very simple, we will add Bitcoin Wallet with API and STRIPE Subscription. You should check your Bitcoin wallet and transfer fund to another btc wallet. Need expert with experience on it. 14 Laravel, Blockchain Dec 12, 2017 Dec 12, 20175天 19时 $1491
ATM Application for Bitcoin We are looking for someone with knowledge and experience with major ATM vender hardware and software integration. Experience integrating Bitcoin related APIs is a plus, but the most important experience is working with integrating ATM hardware and software. This project may involve working with traditional ATMs for integrating software with the physical hardware, such as an ATM application, an... 5 C 编程, 软件构架, 密码学, Bitcoin, Blockchain Dec 12, 2017 Dec 12, 20175天 16时 $35553
Project for Valentino P. Hi want to discuss a Project related to Crypto Mining. Please send us a message back to Discuss 1 C 编程, C++编程, , Blockchain, Ethereum Dec 11, 2017 Dec 11, 20178天 9时 $78
Smart Contracts Will get this right sooner of later. Looking for someone to write smart contracts on Ethereum platform to plugin to our wordpress website. 33 PHP, Python, 网络安全, WordPress, Blockchain Dec 11, 2017 Dec 11, 20175天 6时 $16468
initial ICO website needed (please have worked on ICO or do not bid) I am looking to release a new ICO (initial coin offering). The platform will come later, but I need a page that will help design my coin, make secure wallets, do blockchain for a number of coins. This all needs to be secure. I also need to be able to add my whitepaper, roadmap, team and other things. IF you have not ever released an ICO page please do not bid on this project... here are some place... 20 PHP, 网站设计, 徽标设计, HTML, Blockchain Dec 11, 2017 Dec 11, 20174天 22时 $23127
Blockchain Software Engineer Must be UK based Must have experience of cryptography and encryption Must have experience creating ERC20 Tokens 9 工程, 密码学, Blockchain Dec 11, 2017 Dec 11, 20174天 22时 $385
Crypto Wallet Portal BTCTENT.com What i need is : •A secure Crypto website that accepts deposits from the public and store their coins •A payment network which let them transfer crypto-currencies to each other fast and securely Secure Crypto Wallet Abstract Virtual currencies and mobile banking are technology advancements that are receiving increased attention in the global community because of their accessibil... 50 PHP, 计算机安全, Bitcoin, 网络安全, Blockchain Dec 11, 2017 Dec 11, 20174天 15时 $11021
X11 COIN - Block reward split in three parts Dear we need Block chain developer for x11 coin. Coin already functional and we need split block reward in to three parts. 1: 45% to miners who will mine. 2: 45% will equally divide wallets who have 1000 Coins 3: 10% to self development wallet we need Block chain experienced developers, we don't deal on BTC or any other currency or platform. 15 C++编程, Bitcoin, Blockchain, Ethereum Dec 11, 2017 Dec 11, 20174天 13时 $67913
CRYPTOGRAPHY WALLET APPLICATION LOOKING FOR a well experienced Developer in CRYPTOGRAPHY WALLET APP suitable for WEB / IOS / ANDROID NO UPFRONT PAYMENT. WILL JUST PROVIDE MILESTONE ONCE WE’LL AGREE FOR THE PROFESSIONAL FEE. STOP SUGGESTING TO CONTACT OUTSIDE FROM FREELANCER. Requirements / checklist: Used of blockchain api for btc exchanges Generate BTC address for registered user, private and public address Generate PHP... 39 Java, MySQL, RESTful, Blockchain Dec 11, 2017 Dec 11, 20174天 11时 $10810
I would like to hire a Virtual Assistant Ethereum ERC20 smart contracts in solidity 0.4.20 one-time fixed issue , all tokens placed // simple circulation rules , no growing algorithm // + some additional specifications /// pls bet & chat me asap 9 Java, Javascript, 数据输入, Blockchain, Ethereum Dec 10, 2017 Dec 10, 20174天 8时 $20762
Blockchain developer and Cryptocurrency Expert Looking for block-chain developer and cryptocurrency expert. Someone who has proven expertise in bitcoin 29 网站设计, Bitcoin, Blockchain, Ethereum Dec 10, 2017 Dec 10, 20174天 6时 $213
Need landing page for ICO on Ethereum blockchain I am looking for someone to help create the landing page for an ICO project. Please submit examples of your work. Looking to get started ASAP. **Please reply with the word "CRYPTO" somewhere in your response or I might skip over you** 26 软件测试, 登陆页面, Blockchain, Ethereum, Web Development Dec 10, 2017 Dec 10, 20174天 5时 $9967
Blockchain instructor Looking for a blockchain educator/instructor to create online video courses. Each course will be about one hour long. Course topics may include information about Crypto Currencies, Blockchain, ICOs, Crypto Trading, etc. Content should be in English. 4 教育与辅导, 英语(英国), Bitcoin, Blockchain, Ethereum Dec 10, 2017 Dec 10, 20173天 21时 $960
PHP Expert for Coinbase API Integration We are urgently looking for a PHP expert who can work closely with our backend team and integrate Coinbase PHP library to facilitate communication between our JAVA backend and blockchain network. Additional experience with blockchain technology and cryptocurrencies is a huge plus. 8 PHP, Bitcoin, Blockchain, Ethereum, API Dec 10, 2017 Dec 10, 20173天 19时 $81
Blockchain and Java Backend Expert We are urgently looking for a blockchain and java backend expert who can help our backend team to create the next-gen cryptocurrency exchange wallet in India. We would prefer if you have previous experience in working on bitcoin/ethereum wallet services or APIs which we can integrate in our backend to facilitate wallet creation, address generation and payment processing. Please write 'I ... 12 PHP, Java, 软件构架, Bitcoin, Blockchain Dec 10, 2017 Dec 10, 20173天 18时 $92
created a a decentralized cryptocurrency based on omni layer looking for a team who is experienced in blockchain development, familiar with Ethereum smart contract, can create a cryptocurrency based on omni layer 8 Blockchain Dec 10, 2017 Dec 10, 20173天 17时 $212
MLM Development With BlockChain/Distributor Ledger System Looking for developers who can build a MLM Software on Blockchain technology. 4 Blockchain Dec 10, 2017 Dec 10, 20173天 16时 $59242
Blockchain technology Looking for someone to design and build a Blockchain for cryptocurrency looking to complete this project in the next couple weeks need someone with great communication skills in English that I’m able to communicate my ideas to if interested please contact me back for us to be able to see how can we work on this project thank you 16 软件构架, 脑力激荡, Bitcoin, Blockchain, Ethereum Dec 9, 2017 Dec 9, 20173天 3时 $9522
Create my Ether blockchain token. I need someone to create ether blockchain token. Main token functions need to be : - When someone send ether to smart contract adress he receives tokens in return. -Ability to send dividends to all token holders in ethereum. - I need to change exchange rate ethereum/token if needed. I need to create new tokens without sending ether. So a need crowd founding token or something like this. ... 12 编程, Blockchain, Ethereum Dec 9, 2017 Dec 9, 20172天 20时 $4566
I need a new ICO website I'm working on a block chain project .. I need a coding expert to create a crypto lending website for me with the following basic features: Creation and distribution of tokens Landing page/homepage The ICO administration/client platform Bitcoin/eth/dash/litecoin deposit platform(integration/API payment) Automatic purse generation Registration page and user profile. interested programmer shou... 24 PHP, 网站设计, 平面设计, Blockchain, API Dec 9, 2017 Dec 9, 20172天 20时 $5245
Fix my crypto wallet error I have a wallet which is not confirming transactions. please check this screenshot. Only experienced. 7 C 编程, 密码学, C++编程, Bitcoin, Blockchain Dec 9, 2017 Dec 9, 20172天 14时 $336
Solidity Developers We are building the next generation crypto currency platform, token and network. We are developing on multiple stacks and languages. We need experienced solidity developers to assist with developing our master node smart contracts. At this point, we are building out our architecture and technology stacks. Data models are in development, as is our coins network, master node system, and wallets.... 8 密码学, node.js, Bitcoin, Blockchain, Ethereum Dec 9, 2017 Dec 9, 20172天 13时 $148
Need Block chain Technology speaker for Workshop Introduction Blockchain Blockchain Durability and robustness Cryptography Hashing Consensus methods Distributed ledger Peer-to-peer network Decentralization Idea of Crypto currencies like Bitcoin, Etherium, Ripple Smart contracts Build Sample decentralized blockchain App Test and deploy decentralized application 7 node.js, Bitcoin, Blockchain, Ethereum Dec 9, 2017 Dec 9, 20172天 11时 $9371
Python_trading a python 2.7 script to send orders through API to blockchain exchange C-Cex the input attributes and expected output from the function will be provided with a sample we will need the script to handle the usual messages and tackle expected error (if any) we will need the script to do the following features as a minimum: 1. place order 2. cancel order 3. check specific order status 4. get ... 11 Python, Blockchain Dec 8, 2017 Dec 8, 20172天 11时 $933
ERC20 Smart Contract Modification Required I'm struggling to compile an ERC20 fork I'm trying to work on. All I need is for someone to look at it and quickly fix it with an explanation of why it wasn't working. Shouldn't be more than a quick 10 minute job for someone who knows what they're doing. Thanks! 5 Blockchain, Ethereum Dec 8, 2017 Dec 8, 20172天 5时 $336
Blockchain developer and Cryptocurrency Expert Looking for blockchain developer and cryptocurrency expert. Someone who has expertise in bitcoin wallet and integration. I want to create a cryptocurrency exchange platform on web and mobile. Only expert and experience developer should apply with their portfolio for long term relationship 7 密码学, C++编程, Bitcoin, Blockchain, Ethereum Dec 8, 2017 Dec 8, 20172天 3时 $187
cryptocurrency ico We have a brilliant world adopting cryptocurrency concept and need to recruit the team to make it a reality. Both blockchain (or beyond) technical or sector marketing brains are needed. Hoping to not sound too full of ....... but we think we really have something here - do you have something to bring to the party? 28 Mobile App Development, Blockchain, Digital Marketing Dec 8, 2017 Dec 8, 20172天 2时 $553
Modifying an ERC20 smart contract I'm struggling to compile an ERC20 fork I'm trying to work on. All I need is for someone to look at it and quickly fix it with an explanation of why it wasn't working. Shouldn't be more than a quick 10 minute job for someone who knows what they're doing. Thanks! 4 Blockchain, Ethereum Dec 8, 2017 Dec 8, 2017已经结束 $219
Adjust Open Source Code I am looking for someone to adjust this code: [链接已删除,请登录查看] To work on cryptonight pool, all options and features should remain the same. Only interested to run on Ubuntu, no need to make it work for windows 11 C 编程, Python, Linux, 软件构架, Blockchain Dec 8, 2017 Dec 8, 20172天 $968
WP and Token Smart Contract (ERC20) Development Want to make a Token and WP about the ICO. Will explain the concept of the ICO once bid. 29 Mobile App Development, 编程, Blockchain, Ethereum, Web Development Dec 8, 2017 Dec 8, 20171天 22时 $63066
Lending program, smart contract, Erc20 token 1. I want a standard Erc20 token to swap with our previous token that is not upto standard. You will create the standard erc20 token and swap it with the previous one. 2. I want a lending program like [链接已删除,请登录查看], were investors can deposit bitcoin and exchange it with our own erc20 token to lend it to us and withdraw interest after every plans. everything will work in our dashboard. 3. i w... 21 C 编程, C++编程, Bitcoin, Blockchain, Ethereum Dec 8, 2017 Dec 8, 20171天 20时 $13370
Bitcoin Exchange Program a Bitcoin Exchange that includes bitcoin, bitcoin cash, ethereum, litecoin and dash wallets. Connection to a trading platform Login security with SMS, and email verification Create various addresses such as bitcoin address and address for all the other currencies. Mobil apps Security Software must pass inspection by the Mexican Government banking and software regulators. for further ... 55 C 编程, 软件构架, C++编程, Bitcoin, Blockchain Dec 8, 2017 Dec 8, 20171天 12时 $70083
Fork CryptoNote I need you to setup two ForkNote nodes and setup a mining pool. ForkNote is a version of CryptoNote. I have already created a fork on github and the config files for the fork. I'm looking for developers that will work for the long term, there are a lot of things that will need to be modified in the future. 13 C++编程, Bitcoin, Blockchain Dec 8, 2017 Dec 8, 20171天 12时 $1030
New cryptocurrency need new cryptocurrency with following features: -unique code not bitcoin -secure -instant -no confirmations -no mining -no fees -2,000,000,000 market cap -I will own all upfront -windows wallet required initially -private transactions -private blockchain 17 密码学, Bitcoin, Blockchain, Ethereum Dec 7, 2017 Dec 7, 20171天 11时 $7610
need to develop a web wallet for the altcoin need to develop a web wallet for the altcoin can any one help it is urgent just name your price and you will be get paid we just want quality work Thanks 42 网站设计, Bitcoin, 软件开发, Blockchain, Ethereum Dec 7, 2017 Dec 7, 20171天 7时 $514888
Whitepaper and technical analysis for business idea Hi, I have business idea regarding decentralized telecom infrastructure, and I would need a technical writer and researcher in blockchain and telecommunication field to create a whitepaper for me. All theories should be backed by market analysis and fact Whitepaper will include: 1) Executive summary 2) Introduction 3) Problem Statement 4) Solution 5) Business Case 6) Summary 7) T&E an... 41 技术写作, 报告写作, Research Writing, 通讯工程, Blockchain Dec 7, 2017 Dec 7, 201723时 45分 $1428
Ethereum smart contract in solidity Need help to create ethereum smart contract in solidity. ERC20 token and ICO contract. Please provide your experience, e.g real token and ICO you have created. 22 Blockchain, Ethereum Dec 7, 2017 Dec 7, 201721时 44分 $10904
Create X11 crypto-coin (e.g. DASH Fork) We will launch a new X11 crypto-coin. We already have graphic designer, webmaster, marketing / social network expert, project manager. We are now looking for developers with experience in cryptocurrency, ideally experience with X11 coins such as DASH. The work to be done is to fork an existing X11 coin and adapt it according to requirements that will be communicated later, setup a testnet and f... 16 C++编程, Bitcoin, Blockchain, Ethereum Dec 7, 2017 Dec 7, 201720时 28分 $828
Develop Cryptocurrency Exchange for altcoins and Token ( erc20 ) I want to Develop Cryptocurrency Exchange for altcoins and Token ( erc20 ) I am attaching screenshot of proposed EXCHANGE UI , In Exchange currently BTC/ERC20 TOKEN , ETH/ERC20 TOKEN , LTH/ERC20 TOKEN PAIRS TO BE TRADED , In future I can Add new Alt coin with installing master node , I CAN CONNECT LIQUDITY VIA API OF MY EXCHANGE WITH ANY OTHER POPULAR EXCHANGE LIKE KARKEN , POL... 16 PHP, 工程, MySQL, Bitcoin, Blockchain Dec 7, 2017 Dec 7, 201718时 45分 $51848
ERC20 Token UNT The first coin backed by an international websites network. Decentralised digital services and opportunities marketplace for individuals ,entreprises and advertising industry Project already online looking to expand dev team in order to hugh growth expected 10 PHP, WordPress, 设计, Blockchain, Ethereum Dec 6, 2017 Dec 6, 20172时 6分 $152
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