Blockchain Práce a soutěže

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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Projekt/Soutěž Popis Nabídky/Návrhy Dovednosti Zahájeno Končí Cena EUR
Need Help with MySQL Optimization and MPOS (Mining Portal Open Source) Configuration We are running an MPOS pool installed on Ubuntu 14.04 LTS with MySQL 5.5.60 and PHP 5.5.9 with Memcache installed and enabled. Our ideal functionality is to use Memcache to handle requests for user hashrates and user and round shares in order to keep the frontend fast and to relieve query load to our MySQL database. What's happening instead is requests for such information are tying up our My... 6 PHP, MySQL, Bitcoin, Blockchain May 26, 2018 Dnes6d 19h €146
Low Budget Crypto Currency Development This project is for the development of: A Low Budget Crypto Currency with POW2 (like [pro zobrazení URL se přihlaste]) This is straight forward power to the people crypto, no ICO 2 Different type of support programs, these must be, user friendly, one click, KISS solutions: - Wallets: Windows, Mac, Linux, Android, IOS, Paper - Miners: Windows, Mac, Linux, Browser Website with stockprice, buy... 8 PHP, Android, Softwarová architektura, Mac OS, Blockchain May 26, 2018 Dnes6d 18h €1187
Need a blockchain development expert to develop a decentralised chatting network I'm looking for a blockchain development expert, who can develop a decentralised chatting network. Please quote your price, and time duration. 5 Bitcoin, Blockchain, Ethereum May 26, 2018 Dnes6d 8h €2044
Generic dash cryptocurrency fork teaching I need a blockchain developer-teacher to provide tools and guides, and teach my programmer "how to blockchain": How to change generation algorithms (POS/POW[X11/Lyra/Xevan]/POW+POS-HYBRID) with Genesis block creation (POW) Difficulty adjustments How to change network parameters such as: Block generation time, Block weight Coin emission and distribution between MN/MINER/BUDGET BlockCount... 5 Bitcoin, Blockchain May 26, 2018 Dnes6d 6h €571
Change Genesis Block I'm looking for someone who can create a new genesis block. 0 Bitcoin, Blockchain May 26, 2018 Dnes6d 6h -
My Ether Wallet script changed to include Erc20 tokens exchanged with ethereum source code: [pro zobrazení URL se přihlaste] site: [pro zobrazení URL se přihlaste] I need this script changed to included exchange erc20 tokens with ethereum. Wallet will work exactly the same as my ether wallet script it will just have the function to add tokens (already has this function) and you can exchange with ethereum. this will work in the way as a normal decentralized ex... 3 PHP, Javascript, Bitcoin, Blockchain, Ethereum May 26, 2018 Dnes6d 5h €88
i'm looking for blockchain expert Hello i need to hire people who knows blockchain developing and coin creation,is a long term project,so you don't have to ask me money now,you must proof me that you like the cause and are able to continue developing of the [pro zobrazení URL se přihlaste] coin on own blockchain ,pos,wallet,no mining,similar to [pro zobrazení URL se přihlaste] and see globalpeoplecoin dot ga,whe... 12 C++ programování , Blockchain May 26, 2018 Dnes6d 2h €12
i need Bitshares Developer i m looking for only Bitshares core Developer. don;'t apply if you are not expert in Bitshares core, otherwise i will Report your bid. 2 Python, SQL, C++ programování , Bitcoin, Blockchain May 26, 2018 Dnes6d 1h €547
CREATOR TOPIC BITCOINTALK I need people for create topic in bitcointalk about our ICO. And manage topic. For 1 month. And will paid every month. I need level member in bitcointalk with legendary or senior. Not newby. 4 Blockchain, Ethereum May 26, 2018 Dnes6d 1h €23
Need 0.013BTC , they are exactly 100USD . I`ll pay here 200$ upfront for them . If you have the needed amount just let me know so we can discouse for more ! thanks 2 Bitcoin, Blockchain, Internetový Marketing, Tvorba log, Photoshop May 26, 2018 Dnes2d €137
Project for Quan Y. Hi Quan Y., I noticed your profile and would like to offer you my project. We can discuss any details over chat. 4 Javascript, Grafický design, , Angular.js, React.js, Blockchain May 25, 2018 May 25, 20188d 15h €9
Bitcoin exchange with top 10 coins Do not bid if you have not delivered a crypto exchange before Payments will be done on milestone delivery , NO ADVANCE PAYMENT You need to show that demo exchange have been delivered by you. Only bid the amount you are prepared to accept Read specs before bidding. Thanks 20 PHP, Linux, Bitcoin, Blockchain May 25, 2018 May 25, 20185d 15h €1325
Cryptocurrency Exchange 10 coins Ideally I am looking for solution which is already delivered in production and tested in production Hence with small new changes as per my specs and new UI it can be deployed in production See the specs with more details Do not bid without reading the specs Do not bid lower price that you are not willing to take . 66 PHP, Linux, node.js, Bitcoin, Blockchain May 25, 2018 May 25, 20185d 13h €3852
c++ Programmer needed with crypto knowledge i need a c++ Programmer with Crypto exchange knowledge. who can take open source exchange core code from git-hub and modify that as i want. only expert level apply here.. 13 Programování v C, C# Programování, Softwarová architektura, C++ programování , Blockchain May 25, 2018 May 25, 20185d 8h €594
Blockchain programmer with c++ knowledge i know some opensource blockchain, i want to install that with some cusotm development, i need c++ programmer with blockchain expert. apply only u are c++ and blockchain development expert. more detail will via chat.. 10 Programování v C, C# Programování, Softwarová architektura, C++ programování , Blockchain May 25, 2018 May 25, 20185d 7h €578
Create CryptoNight Heavy Coin (like Loki, Monero or Sumokoin) CryptoNote I am looking for an experienced developer to create a new Cryptonight heavy coin that is ASIC resistant. I will also need a Windows wallet created to support the new coin. I don't actually mind if this is a fork on Sumokoin as that is a great project and will be a good base for the start on this new coin. I will also need this coin to be compatible with cryptonote-nodejs-pool. Which is th... 11 Bitcoin, Blockchain, Ethereum May 25, 2018 May 25, 20185d 6h €1846
Project for Alok Kumar B. Hi Alok Kumar B., I noticed your profile and would like to offer you my project. We can discuss any details over chat. 3 Vytváření zpětných odkazů, Google Adwords, Partnerský Marketing, Social Media Marketing, Blockchain May 25, 2018 May 25, 20185d 4h €103
Ethereum Smart Contract I need a solidity developer to develop a Ethereum smart contract. More details on how the contract works if interested. 18 Blockchain, Ethereum May 24, 2018 May 24, 20184d 17h €586
Blockchain StartUp ( ethereum based) recruting experts Hello Freelancers, I am looking for blockchain experts on ethereum based projects. I don`t want to tell you too much here on the public Project post. But I am looking for someone who wants to change the world and want to be a part from scratch of a new company. I do prefer peoples from the Ukraine and Russia because I know there work ethic and their mentality. Pls make sure to answer me These Qu... 13 PHP, HTML, Bitcoin, Blockchain, Ethereum May 24, 2018 May 24, 20184d 14h €45
Cryptocurrency We are searching a programmer/developer for a new criptocurrency, ICO creation from the beggining, the new currency: 25% will be used in mining/masternodes divided as follows: 5% mining 20% more *this % can change The developer will help us to choose the best algorithm to use and justifying its advice telling us theme as: security Fast transaction factibility total of coins possible fork diffic... 37 PHP, Web design, Kryptografie, MySQL, Blockchain May 24, 2018 May 24, 20184d 12h €4882
Building a Crypto Currency Exchange I need to get a Crypto Currency Exchange developed with Fiat deposits and withdrawals. Something like Coinbase and Gdax. With additional features in it. 26 PHP, Programování v C, C++ programování , node.js, Blockchain May 24, 2018 May 24, 20184d 10h €1657
Blockchain to transfer and share data Build a distributed access and validation system using the Blockchain to replace centralized intermediaries that would also user Smart Contracts to act as an intelligent representation that links patients and providers to the addresses of existing medical records. 24 Python, Programování databází, JSON, Blockchain May 24, 2018 May 24, 20184d 10h €4236
Project for Alok Kumar B. Hi Alok Kumar B., I noticed your profile and would like to offer you my project. We can discuss any details over chat. 3 Vytváření zpětných odkazů, Google Adwords, , Partnerský Marketing, Social Media Marketing, Blockchain May 24, 2018 May 24, 20187d 9h €106
Community Manager: Essentia Duty: manage the Japanese local Ess community telegram, organize local meetup. Local exchange contact, biz dev strategy for the local market. 5 Copywriting, Blog, Blockchain, Content Marketing May 24, 2018 May 24, 20184d 8h €1820
Blockchain developer - NEO blockchain token creation and smart contract We have a project thats going to be launched for seed funding in 2 months time. This project involves the expertise of many development fields, one of them been blockchain development in particular NEO platform. We looking for a full time blockchain head developer to help us with our project. In order to complete the crowd funding stage of seeds funds we need to present a prototype which is bee... 22 Python, C++ programování , Blockchain May 24, 2018 May 24, 20184d 3h €68
Blockchain engineers Blockchain engineer to support a token launch on Ethereum 25 Blockchain, Ethereum May 24, 2018 May 24, 20184d 3h €24
Kryptografie, Strojové učení, Umělá inteligence, Blockchain, Ethereum May 24, 2018 May 24, 20184d 1h
create coin ethereum based create coin XYZ (not token ) based on ethereum (i will use this coin to deploy smart contracts as transaction fee) using PoS mechanism and support masternode. each blocksize maybe max about 5MB and every 1 Minute/block 'mining' pool/nodes apps , blockchain explorer, desktop wallet. [Removed by Freelancer.com Admin] 41 Javascript, Golang, Blockchain, Ethereum May 24, 2018 May 24, 20184d €1660
Metamask API intergration for users back end we are looking for someone who can help finish the metamask integration on our backend so people can buy our ERC20 tokens and they go to their meta mask wallet that they either import or create from within our back end. 15 PHP, Bitcoin, Vývoj softwaru, Blockchain, Ethereum May 24, 2018 May 24, 20184d €426
Project for Alok Kumar B. Hi Alokumar, I noticed your profile and would like to offer you my project. We can discuss any details over chat. 6 Vytváření zpětných odkazů, Google Adwords, , Partnerský Marketing, Social Media Marketing, Blockchain May 23, 2018 May 23, 20186d 19h €90
Need Google Extension Same as MetaMask Develop extension! I need google extension same as MetaMask. Thanks 4 PHP, Javascript, Softwarová architektura, Google Chrome, Blockchain May 23, 2018 May 23, 20183d 19h €2968
Fork Ripple - submit how is possible? I want someone who can fork Ripple. develop wallet Web wallet mobile wallet iOS, Android 11 Kryptografie, Blockchain, Ethereum May 23, 2018 May 23, 20183d 18h €2183
I am trying to create a new coin which will be a fork of PIVX, so far I have been able to generate the genesis block, merkle root and nonce but it won't mine, getting the errors below: errors from [pro zobrazení URL se přihlaste] 2018-05-23 16:19:59 [pro zobrazení URL se přihlaste]() = 1001 2018-05-23 16:19:59 [pro zobrazení URL se přihlaste]() = 0 2018-05-23 16:19:59 [pro zobrazení URL se přihlaste]() = 4 2018-05-23 16:19:59 init message: Loading addresses... 2018-05-23 16:19:59 torcontrol thread start 2018-05-23 16:19:59 ERROR: Read: Failed to op... 3 Linux, C++ programování , Blockchain May 23, 2018 May 23, 20183d 18h €21
-LoveChain- Virtual and blckchain version of the locker you can find on the "pont des arts" in Paris. Simple App where you can put your name and the name of your lover, and write it in the ethereum blockchain forever. After validation you will receive a certificate with the block number. I want to have an iOS version for this app and accept Apple Pay as payment system. That will implied to wait for ... 28 Mobile App Development, iPhone, Objective C, Blockchain, Ethereum May 23, 2018 May 23, 20183d 16h €3254
Web development I need a new website. I need you to design and build it. We need Crypto Exchange website , look a like binance , polinex with facilities like margin trading and lending 58 PHP, Web design, Grafický design, Solidworks, Blockchain May 23, 2018 May 23, 20183d 14h €4305
Build a Investment Website I want a website with latest graphics which also have a member login, admin login, and super admin login. I want a cryptocurrency payment gateway and automatic withdrawal system to customers account. 11 PHP, Kryptografie, Bitcoin, Blockchain, Ethereum May 23, 2018 May 23, 20183d 11h €407
Blockchain Developer urgent I want to make a decentralize exchange using a open source blockchain after that i want to do many custom thing there, only experience guy bid here, i will request your past working experience in this filed. 24 Softwarová architektura, C++ programování , Bitcoin, Blockchain May 23, 2018 May 23, 20183d 6h €1311
Develop a Crypto Exchange and Trading Portal (1) A Trading & Exchange Platform for Buy/Sell/Exchange of Crypto Currencies. To be developed on Larval platform. (2) 5 Coin integration to begin with- BTC, ETH, LTC, BCH and Ripple (3) E-Wallet- Crypto & Fiat (4) Fiat Deposit & Withdrawal integration. Means Exchange/Trade between Crypto to Crypto as well as Fiat to Crypto. Fiat- 1 Currency. (5) UI/UX of the site has to be very Modern... 27 Web design, Grafický design, Softwarová architektura, Bitcoin, Blockchain May 22, 2018 May 22, 20182d 18h €5841
Are you a blockchain technology and cryptocurrencies enthusiast? Looking for a job opportunity? Do you want to integrate our project? The blockchain is a wonderful thing. It’s only been around for ten years, and it’s already taking the world economy and shaking it by the roots. As it turns out, the economy isn’t the only thing the blockchain is set to transform. Cryptocurrency networks are being utilized on a variety of different fronts to do everything from saving the planet to choosing the nation’s nex... 21 PHP, C++ programování , Bitcoin, Blockchain, Ethereum May 22, 2018 May 22, 20182d 12h €11
Add a feature to an altcoin project PLEASE READ BEFORE BIDDING (NO ETHEREUM BASED BLOCKCHAIN) I wait from a blockchain developer to integrate this feature to the bitcoin fork: - Set sending limit (Anyone can set a send limit for a specific address using the private key, for example i set to my address to be able to send only 0.3 BTC under 24 hours, i can remove this condition with my private key, or modify it) - More information... 12 Programování v C, Python, C++ programování , Bitcoin, Blockchain May 22, 2018 May 22, 20182d 11h €689
Fix a Bitcoin Fork - All the specs for the coin are done. We just need someone who knows how to add the DNS seeds and make the fork to start mining (and visible to other peers). Please good budgets! 8 Programování v C, UNIX, Bitcoin, Blockchain, Ethereum May 22, 2018 May 22, 20182d 10h €375
Blockchain project assistance We are currently building a crypto exchange and we require assistance to create user wallets for ERC20 supported wallets with all transactions being linked to the eth network. We also require assistance to send transactions after trade success. 22 PHP, Bitcoin, Blockchain, Ethereum May 22, 2018 May 22, 20182d 10h €874
Watcher of Crypto wallets local tool which can verify balance and transactions on cryptowallets: BTC, BCH, LTC, ETH, DAS, XRP - must communicate via api - return balance + transactions - bulk requests - dont want to use 3rd party service - ready to use open-source solutions - example insight for btc etc... - need bash script which will autoinstall the needed libraries, dependencies, clone git, settings etc on fresh ubuntu ... 9 Bitcoin, Blockchain, Ethereum May 22, 2018 May 22, 20182d 8h €277
Blockchain App need to design blockchain application. 6 Blockchain May 22, 2018 May 22, 20182d 7h €68
ICO Website & Erc20 Token Works We would like to get a complete service for our special ICO project, please text us for details. 40 Web design, Softwarová architektura, Blockchain May 22, 2018 May 22, 20182d 4h €1205
Install and integrate Top 15 Crypto Currency Daemons using PHP Only the developers who already executed similar work successfully can contact me and work on this project. Must be finished within 1 day. 7 Kryptografie, Bitcoin, Blockchain May 22, 2018 May 22, 20182d €1164
Project for Cryptocurrency We need to build our own digital currency. 10 Blockchain, Ethereum May 22, 2018 May 22, 20181d 23h €3561
React native bitcoin wallet app I am looking for a professional mobile developer/team to design and create a bitcoin mobile application wallet similar to [pro zobrazení URL se přihlaste] wallet. Github link ([pro zobrazení URL se přihlaste]) and iOS link ([pro zobrazení URL se přihlaste]). This is a long term position and I am looking for a very smart developer/team who can take an idea and turn it into a co... 55 Mobile App Development, iPhone, Android, Bitcoin, Blockchain May 22, 2018 May 22, 20181d 22h €1393
Promote my Medium article and upvote the link I posted I wrote a Medium article yesterday and want to advertise and market it so that it starts to gain traction. I'll provide you with the link to the Medium article, the link to my Reddit post, and the link to my twitter post for that same article. Please let me know how you can help promote this article of mine. Thank you! 8 Internetový Marketing, Marketing, Bitcoin, Social Media Marketing, Blockchain May 22, 2018 May 22, 20181d 20h €32
Smart contract auditing Looking for someone to audit my smart contract. Erc20 token Must have experince auditing smart contract before 22 Blockchain, Ethereum May 21, 2018 May 21, 20181d 18h €962
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