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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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    61 trabajados encontrados, precios en EUR
    Desarrollo DAPP 6 días left

    Proyecto para emprendedores, busco socio para ir al 50%, ambos ganaremos tanto dinero como bien vaya el proyecto. Perfil de persona joven y emprendedora. El proyecto consiste en crear un token al estilo de cryptokitty, pero con otras propiedades, ya esta hecho todo el prototipo de proyecto, solo falta llevarlo a cabo. Más informacion por privado. Project for entrepreneurs, I am looking...

    €979 (Avg Bid)
    €979 Oferta Promedio
    5 ofertas

    Require the blockchain developer for crypto currency project. I want to start new masternode coin (POS + MN) with different collateral.

    €714 (Avg Bid)
    €714 Oferta Promedio
    4 ofertas

    I want to conduct an experiment to create an incentive model (based on DeFi yield contracts) for participating in proof of stake networks including Cosmos, Polkadot, ETH2. Will also involve the creation of synthetic ETH2. Looking for someone who can make light modifications to existing solidity smart contracts related to DeFi incentive structures and governance. May involve combining components ...

    €528 (Avg Bid)
    €528 Oferta Promedio
    2 ofertas
    btc miners wanted 6 días left

    btc miners wanted in my organisation

    €23 - €282
    €23 - €282
    0 ofertas
    Storage app on the blockchain 6 días left
    VERIFICADO

    We want to build an app that can be used to store photos and documents in the cloud. this app will be built on the Ethereum Blockchain Or Bianace smart Chain.

    €577 (Avg Bid)
    €577 Oferta Promedio
    18 ofertas

    Need a Blockchain Developer to Create a Smart Contract on the Tron Blockchain with security proofing to be created for me. Examples are [iniciar sesión para ver URL], [iniciar sesión para ver URL], [iniciar sesión para ver URL]

    €445 (Avg Bid)
    €445 Oferta Promedio
    9 ofertas

    Need a Blockchain developer to write a smart contract for me on the Tron Blockchain. Examples: [iniciar sesión para ver URL], [iniciar sesión para ver URL] [iniciar sesión para ver URL] etc

    €530 (Avg Bid)
    €530 Oferta Promedio
    10 ofertas

    Hello, We need to update our current chain and coin for Pivx v4. So we loooking for an expert developer for do this update. Thx you.

    €590 (Avg Bid)
    €590 Oferta Promedio
    6 ofertas

    Project Description CRYPTO Arbitrage PLATAFORM AUTOMATIC Build or expand in the existing arbitrage PLATAFORM [iniciar sesión para ver URL] Obtain prices and show percentage differences The PLATAFORM should be developed ensuring data and information are displayed in real time. (real-time updates so you don't click to refresh all time) Wll be automating trades and transfer of fund...

    €734 (Avg Bid)
    €734 Oferta Promedio
    5 ofertas
    Develop blockchain for stablecoin 6 días left
    VERIFICADO

    I need you to develop stablecoin for me. It must have its own blockchain. I must be able to mint and burn coins (manage supply). Optionally set commission for transactions in the network. There must be coin, GUI/Web wallet, blockchain explorer. Preferences are Cosmos SDK and Quorum (something like XinFin/Terra etc). I am not interested in token on other networks and POW coin. Please mention ...

    €3324 (Avg Bid)
    €3324 Oferta Promedio
    15 ofertas
    Blockchain signature journal -- 2 5 días left
    VERIFICADO

    Develop a blockchain signature journal

    €19 / hr (Avg Bid)
    €19 / hr Oferta Promedio
    10 ofertas

    I have a product that is a database of users information that they would like to store inside of our product (microchip). I would like to use blockchain for storage and access of this information. Need someone to take the development from scratch to a prototype project. Put the EmmaChain first in your bid to ensure read this project. Must have experience developing on ethereum and experience with ...

    €1179 (Avg Bid)
    €1179 Oferta Promedio
    16 ofertas

    We are interested in building a site similar to the functionality of Propy.com. This site must also include the ability to buy property with USD and Bitcoin and utilize smart contract technology like Propy.com. An App will also need to be created in addition to the site for Apple and Android phones. Please review the site and submit a bid for our review. I need an estimate on how long it will take...

    €4853 (Avg Bid)
    €4853 Oferta Promedio
    11 ofertas
    Help in my phd 4 días left

    Simulation for a secure system for blockchain using quantum cryptography

    €533 (Avg Bid)
    €533 Oferta Promedio
    4 ofertas
    p2p lending platform 4 días left
    VERIFICADO

    Hello Dear Musaada an online business platform that connects numerous businesses in need of invoice discounting with funders. It is a peer to peer lending platform where SMEs, small and medium companies can sell their receivable invoices at auction to interested investors with the highest bid. About Us: Recognized and innovative start-up, in the field of financial services, specialized in Factori...

    €431 (Avg Bid)
    €431 Oferta Promedio
    7 ofertas
    Functional programming 4 días left
    VERIFICADO

    For a short assignment especially on DAML and DABL smart contract language. If no prior experience please do not respond.

    €461 (Avg Bid)
    €461 Oferta Promedio
    7 ofertas

    We need someone to create a wallet that supports most coins and tokens over blockchain networks. It would be possible by using Trsutwallet ([iniciar sesión para ver URL]) as an open-source project. In addition, it's gonna be a forked project of Trustwallet which will be customized as our requirements. - C++ - Swift - Java - Go Might be needed.

    €1259 (Avg Bid)
    €1259 Oferta Promedio
    10 ofertas
    Build a website 4 días left

    Hello All i need to build a block chain website like [iniciar sesión para ver URL] kindly contact me for more detail.

    €2525 (Avg Bid)
    €2525 Oferta Promedio
    8 ofertas

    Need support for intregate orderbook api into crypto exchange react template for make them tradeable to users, also adding several existing wallet api for make exchange run properly

    €142 (Avg Bid)
    €142 Oferta Promedio
    6 ofertas
    Blockchain Dapp Development 3 días left
    VERIFICADO

    I have a product that is a database of users information that they would like to store inside of our product (microchip). I would like to use blockchain for storage and access of this information. Need someone to take the development from scratch to a prototype project. NOT looking for a blockchain wallet or ICO development. Must have experience developing on ethereum and experience with amazon...

    €2179 (Avg Bid)
    €2179 Oferta Promedio
    28 ofertas

    Market Making Bot for an Exchange similar Uniswap to generate Volume

    €1168 (Avg Bid)
    €1168 Oferta Promedio
    17 ofertas

    I need my website setup for private blockchain node payments (PHP)

    €478 (Avg Bid)
    €478 Oferta Promedio
    26 ofertas

    I have a few smart contracts for which I am looking for fast & efficient frontend developers. A good candidate has knowledge of web3js library, cryptocurrency API & metamask injection . Reactjs knowledge would be an additional benefit.

    €162 (Avg Bid)
    €162 Oferta Promedio
    4 ofertas
    BlockChain Developer 3 días left
    VERIFICADO

    We are looking for a blockchain developer who will be responsible for designing, implementing, and supporting a distributed blockchain-based network. Job Responsibilities: 1. Research, design, develop, and test blockchain technologies 2. Brainstorm and help evaluate applications for new tools and technologies as they continually evolve 3. Maintain and extend current client- and server-side applica...

    €249 (Avg Bid)
    €249 Oferta Promedio
    4 ofertas

    We are in process of developing a Crypto Wallet Mobile Application. Looking for end to ens solution provider both Front End and backend developer who is hands on to validate/communicate handle transactions with respective cryptocurrencies like bitcoin, etherium, tron etc. also develop Mobile Application in Native iOS and Android Experience in blockchain is must. API Integration, Payment Gateway ...

    €2625 (Avg Bid)
    €2625 Oferta Promedio
    19 ofertas

    We are a passionate and creative firm comprised of product designers, artists, engineers, marketers, entrepreneurs, and leaders in the blockchain technology industry. We have been working alongside industry founders since 2013 and have contributed to some of the most important and most recognized products, technology, and brands in the space. Our culture is eclectic and professional, with a team c...

    €28 / hr (Avg Bid)
    €28 / hr Oferta Promedio
    12 ofertas

    Looking for a blockchain developer with experience in smart contracts and hyperledger. Further details will be discussed in chat.

    €17 (Avg Bid)
    €17 Oferta Promedio
    1 ofertas

    I need a new website. I need you to design and build my online store. I will be selling beauty products.

    €939 (Avg Bid)
    €939 Oferta Promedio
    77 ofertas

    Need an expert Blockchain/Solidity Developer with extensive knowledge of DeFi Flashloans and Ethereum Smart Contracts.

    €284 (Avg Bid)
    €284 Oferta Promedio
    2 ofertas

    Required to have good relevant experience and good contacts with Crypto Exchanges and in the industry generally. Must be able to establish good operational partnerships for the successful operation of the Exchange Must also be able to market the exchange on Social/conventional media and have demonstrate this ability Good success incentives additionally available

    €42 / hr (Avg Bid)
    €42 / hr Oferta Promedio
    9 ofertas

    We would like to implement a blockchain software to track company data and starting a digital currency. This could become a full time position/ contract if everything works out.

    €4052 (Avg Bid)
    €4052 Oferta Promedio
    5 ofertas

    Uniswap front-running bot snipes new liquidity for newly created tokens. The bot is the first buyer of any new coin. Ability to set limit buy or sell orders in a given range. For any given token paired with ETH, set parameters: if the price for token > x or < x, then buy/sell T token for ETH at predetermined gwei/gas. Example: purchase token X only if price is $15.

    €1002 (Avg Bid)
    €1002 Oferta Promedio
    4 ofertas
    Blockchain writer 2 días left
    VERIFICADO

    Blockchain & Cryptocurrency marketing agency is searching for a blockchain writer on a constant basis. We need a person who will contribute to blogs of our clients, execute blockchain market analysis and provide us with valuable SEO driven content. Please, share your examples of work when applying and your rates. Best regards, Darya

    €757 (Avg Bid)
    €757 Oferta Promedio
    39 ofertas

    Development of distributed application for securing multimedia data like images, videos or docs.

    €142 - €426
    €142 - €426
    0 ofertas

    I need some blockchain contents

    €14 / hr (Avg Bid)
    €14 / hr Oferta Promedio
    24 ofertas

    Hello, I wanted to transfer an amount from Binance to Coinbase. This USDT amount had to be converted to BTC before transferring to Coinbase, but I forgot to convert it. Now the transaction has been validated and confirmed by Binance. Impossible for them to help me. So I contacted Coinbase for help. They tell me that their system does not support the problems related to USDT. Here is their respon...

    €133 (Avg Bid)
    €133 Oferta Promedio
    4 ofertas
    send 1 satoshi Bitcoin 2 días left
    VERIFICADO

    i want to know a method to send 1000 address with 1~20 satoshi per [iniciar sesión para ver URL] can write by [iniciar sesión para ver URL] let me know details

    €165 (Avg Bid)
    €165 Oferta Promedio
    4 ofertas

    Its like [iniciar sesión para ver URL] with some changes in referral plan.

    €832 (Avg Bid)
    €832 Oferta Promedio
    8 ofertas
    Eth aware Digital Giving platform 2 días left
    VERIFICADO

    General plan for platform upgrade We have a unique donation / giving platform created by a development company and written in PHP/Laravel and is in need of modernisation, completion and upgrades. (You can see it here our current platform here [iniciar sesión para ver URL] - login details in the link below [iniciar sesión para ver URL] ) We need to confirm based on the audit notes p...

    €14950 (Avg Bid)
    €14950 Oferta Promedio
    13 ofertas
    Bitcoin recovery from bitcore 1 día left
    VERIFICADO

    I purchased $1000 worth of bitcoin and placed in a bitcore wallet in 2018. I still have the computer it was downloaded too, it just took forever then to download the blockchain and my girlfriend lost the seed phrase and password, but have been told it can be found in the [iniciar sesión para ver URL]

    €233 (Avg Bid)
    €233 Oferta Promedio
    10 ofertas

    I need someone who can research & write a really professional whitepaper for my ico. you have to add some basic graphics & do some basic editing too to make it look dood

    €194 (Avg Bid)
    €194 Oferta Promedio
    9 ofertas

    I need someone who can research & write content for my crypto based website. I'll explain you things in brief and you have write the whole content for it.

    €11 (Avg Bid)
    €11 Oferta Promedio
    23 ofertas
    Factoring platform 1 día left
    VERIFICADO

    I am looking for a blockchain dev to create a factoring platform market.

    €680 (Avg Bid)
    €680 Oferta Promedio
    25 ofertas

    Hiring a Smart Contract Developer (NFTs) for a digital art project. Intermediate Solidity knowledge required as well as experience with cloud deployment and integration with common wallets. Competitive rates for qualified candidates who can deliver quickly, need to ship within 2 weeks from today.

    €562 (Avg Bid)
    €562 Oferta Promedio
    9 ofertas

    Looking for Blockchain, TRON, Solidity, Staking, DeFi Expert. Must show previous similar experience. Experience with affiliate marketing is plus.

    €591 (Avg Bid)
    €591 Oferta Promedio
    10 ofertas

    Es muss ein Datentransferprotokoll erstellt werden, dass auf Blockchain Technologie basiert und entsprechende Verschlüsselungstechniken aufweist. ------------ A data transfer protocol must be created that is based on blockchain technology and has corresponding encryption techniques.

    €33588 (Avg Bid)
    €33588 Oferta Promedio
    9 ofertas

    Create an Ethereum token for use as a crypto currency. Token, wallet creation. Purchase via (and make purchases on) [iniciar sesión para ver URL] either using fiat or crypto. Please indicate a) which language you would use, b) a brief outline of how the transaction would work via Shopify

    €10 / hr (Avg Bid)
    €10 / hr Oferta Promedio
    9 ofertas
    Ethereum Token 1 día left

    Create an Ethereum token for use as a crypto currency. Token, wallet creation. Purchase via (and make purchases on) [iniciar sesión para ver URL] either using fiat or crypto. Please indicate a) which language you would use, b) a brief outline of how the transaction would work via Shopify

    €14 / hr (Avg Bid)
    €14 / hr Oferta Promedio
    10 ofertas

    There is a stuck transaction within my token and ethereum. Who can help out

    €554 (Avg Bid)
    €554 Oferta Promedio
    9 ofertas

    Need a Solidarity Smart Contract Writer/Editor to edit or write a solidarity smart contract for cryptocurrency.

    €51 (Avg Bid)
    €51 Oferta Promedio
    2 ofertas