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.

Punësoni Blockchain Developers

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    27 punët e gjetura, me çmimin EUR
    Bitcoin/ Crypto eCommerce Website 6 ditë left
    VERIFIKUAR

    I’m looking for a proof of concept website where people can buy PDFs via bitcoin. 1. They can enter their details such as name, email, etc. 2. We show them a QR code with the bitcoin address. 3. When payment has been validated, we send them an email with the PDF. Design isn’t important. This is just a proof of concept.

    €101 (Avg Bid)
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    3 ofertat

    I'm looking for a developer who have experience working with IPFS/Skynet or BTFS. My goal is to customize a decentralized video streaming website based off of [identifikohuni për të parë adresën URL] (which is built with Meteor and available on [identifikohuni për të parë adresën URL]), and customize it to load videos from my own servers. Currently, ...

    €55 / hr (Avg Bid)
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    Ride sharing app 6 ditë left
    VERIFIKUAR

    Looking for a dev who can developed a ride developed a ride sharing app with basic functions like Distance calculation between driver and passenger using google API Price estimation Accept & cancel rides Wallet balance

    €1269 (Avg Bid)
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    65 ofertat
    Need Blockchain developer 5 ditë left
    VERIFIKUAR

    *CANDIDATES FROM KARNATAKA OR TAMIL NADU PREFERRED Good experience in ethereum Knowledge in Golang, Apollo GraphQL

    €598 (Avg Bid)
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    3 ofertat

    Experienced crypto app developer needed- NO HIGH COST SEEKER-ONLY CRYPTO CURRENCY APP Developing experienced developers apply

    €739 (Avg Bid)
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    Develop Cryptocurrency -- 2 5 ditë left
    VERIFIKUAR

    This project is to develop a BTC fork cryptocurrency. Must have extensive experience with cryptocurrencies and blockchain development. Complete delivery in up to 6 days.

    €257 (Avg Bid)
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    Online auction 5 ditë left

    its an online auction system based on blockchain. Its complete in that aspect ,what I want is to add some encyption algorthim to my existing code to make it more secure.

    €112 (Avg Bid)
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    4 ofertat
    Hyperledger Indy 5 ditë left

    We require a team of 4 people to work on a blockchain project. The timeline for the project is 45 days. We would prefer full stack developers.

    €14101 (Avg Bid)
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    Add asicboost on yiimp stratum 4 ditë left
    VERIFIKUAR

    Hello, I own a pool for personal use and I would like to add asicboost on my stratum server. I know stratum source and if possible I prefer to have modified source code with explanation Also a good addition will be equihash algo. Regards Zagorxx

    €376 (Avg Bid)
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    2 ofertat
    Build me an application 4 ditë left
    VERIFIKUAR

    I am looking for a developer to build a simple application using the [identifikohuni për të parë adresën URL] API. More details will be discussed with selected developers only.

    €311 (Avg Bid)
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    12 ofertat

    Hi there, I have a hyper ledger fabric network with 2 nodes, 6 peers. The system works until I got a lot of transactions loaded. I need someone who can review the code and tell me what is the issue. potentially also to fix the issue after the analysis. This is just to provide feedback of the solution. Thanks Fed

    €81 (Avg Bid)
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    4 ofertat

    Only readymade binary mlm platform needed which is crypto based and it must be easy to use and scalable. Show me the demo with admin. Thanks

    €307 (Avg Bid)
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    ICO for real estate project 3 ditë left
    VERIFIKUAR

    The project consists of developing an ICO from scratch for a real estate project. It is about creating a cryptocurrency with Ethereum and making it public. The website must allow the exchange of the token with bitcoin and ethereum. The public offer will last 3 months. I need the web system and cryptocurrency to develop. But also list it in coinmarketcap and in some exchange. Each cryptocurrency ...

    €4470 (Avg Bid)
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    62 ofertat
    Rehive custome intergration 3 ditë left
    VERIFIKUAR

    Looking for a dev who can work with our present developers and successfully intergrate a few features from Rehive

    €485 (Avg Bid)
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    6 ofertat
    Blockchain Certificate System 3 ditë left
    VERIFIKUAR

    Hi, We are looking to build blockchain online certificates system, where school can load it and user can view it. Preferably, in Hyperledger Sawtooth or EVM+IPFS. Please share your past similar project example and estimated timeline & cost for this. Thanks.

    €1811 (Avg Bid)
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    21 ofertat

    If someone has already developed Options Trading Mobile app similar to iqoptions, i will hire you immediately. Only with live demo of admin and user froentend. Thanks

    €32185 (Avg Bid)
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    Crypto margins trading developer 2 ditë left
    VERIFIKUAR

    Looking for developer to developer crypto margins trading developer like [identifikohuni për të parë adresën URL] more info in chat

    €33 / hr (Avg Bid)
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    Looking for a Sr expert smart contract builder for the Hyper ledger blockchain. The project is to convert “PDF” contract that has some rules to smart contract. The current contract consists of static legal verbiage and a section of table rules. Candidate must be Sr expert in Smart contract for hyper ledger blockchain

    €33 / hr (Avg Bid)
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    40 ofertat

    The whole world needs a new economic platform which will allow everyone with a certain economic/financial footprint ( humans , animals , villages, families, towns, businesses etc...) to obtain what they really NEED ( food ,transportation, clothing, electronics, holidays , investment) in exchange for what they can OFFER in return ,based on their own individual situation. At the moment most of the ...

    €65792 (Avg Bid)
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    25 ofertat

    I need to build a peer-to-peer cryptocurrency exchange platform similar to [identifikohuni për të parë adresën URL] which supports the major cryptocurrencies BTC, ETH, LTC, USDT and local currencies, the Electronic wallets, payment gateways, local banks. The platform is compatible with all mobile devices and the site interface is subject to change at my request. Please see the ...

    €2473 (Avg Bid)
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    20 ofertat

    I would like you to create software for 2 coins. The website is dead now, but I have to use it. I want something that actually works the same way as the site. The software must be mathematically savvy and be familiar with bitcoin, blockchain and hashing. I don't mind taking a few days, so I want you to make it as cheap as possible. Thank you.

    €157 (Avg Bid)
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    6 ofertat

    Hiring for a developer to help us develop an application that works with ethereum smart contracts on the back-end / server side. The code will be responsible for executing commands and pulling down data / retrieving data. You will be asked to answer the following questions when submitting a proposal: Do you have any questions about the job description? Do you have suggestions to make this projec...

    €17 / hr (Avg Bid)
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    10 ofertat

    Needs to hire 3 Freelancers Hiring for a developer to help us develop an application that works with ethereum smart contracts on the back-end / server side. The code will be responsible for executing commands and pulling down data / retrieving data. You will be asked to answer the following questions when submitting a proposal: Do you have any questions about the job description? Do you have su...

    €23 / hr (Avg Bid)
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    3 ofertat

    Needs to hire 3 Freelancers Hiring for a developer to help us develop an application that works with ethereum smart contracts on the back-end / server side. The code will be responsible for executing commands and pulling down data / retrieving data, You will be asked to answer the following questions when submitting a proposal: Do you have any questions about the job description? Do you have su...

    €24 / hr (Avg Bid)
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    I need to obtain a legally valid record of the content of a web page or portal. Cryptocurrency Proof of Content on the Web is an easier, safer and more economical way to collect procedural evidence with full legal validity. What are you doing? I need to make a complete copy of the content that is being viewed in your browser and generate a proven report to your presence. From the report created...

    €171 (Avg Bid)
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    8 ofertat
    Bitcoin Chain Analysis 1 ditë left
    VERIFIKUAR

    I'm searching someone who can track transactions and find the final destination address from an input address I provide. This requires serious chain analysis and is NOT done by simply looking up the tx id. Please only comment here if you're sure that you have the necessary skills to do this. The final pay will be discussed with you directly and is not necessarily reflected by the quote...

    €104 (Avg Bid)
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    Earn quick money -- 2 4 orё left
    VERIFIKUAR

    i have project foe 2 hours in java (blockchain)

    €33 (Avg Bid)
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    Artikujt Më Të Mirë të Komunitetit për Blockchain