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. Hire Blockchain Developers

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    38 δουλειές που βρέθηκαν, με τιμές EUR
    Ethereum Smart Contract developers needed 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We are looking for Ethereum Smart Contract developers who has god grip on Solidity language to write contracts and trigger events

    €48 (Avg Bid)
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    1 προσφορές

    Hi I need a Cryptocurrency Wallet app developer for my coin I only need android BUDGET IS 100$ maximum and MILESTONE CREATION IS AFTER WORK

    €136 (Avg Bid)
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    1 προσφορές
    Need a chess website 6 μέρες left

    I need a website that offers player vs player chess match, which both players agree on a price to player the winner takes all, the losser losses the amount he or she staked, and I want the transaction to be in USD or bitcoin. Like [κάνε είσοδο για να δεις το URL] only players stake ...

    €1082 (Avg Bid)
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    29 προσφορές
    Build a Mining Pool Website -- 2 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Build a Mining Pool Website Like [κάνε είσοδο για να δεις το URL] [κάνε είσοδο για να δεις το URL]

    €128 (Avg Bid)
    €128 Μέση Προσφορά
    5 προσφορές
    crypto exchange 6 μέρες left

    Hello! I need a script crypto exchange, just looking for a ready solution. Before buying, I need to watch a demo! I do not need to develop from scratch, such a proposal please do not write to me!

    €1196 (Avg Bid)
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    33 προσφορές
    Blockchain expert 6 μέρες left

    I am looking for ocaml blockchain expert

    €549 (Avg Bid)
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    18 προσφορές

    Section 1: Final points to be verify and fix if any issues 1) SMTP to API for email via [κάνε είσοδο για να δεις το URL] api 2) Email and SMS notification alert for message from trade related 3) Validations in Register page 4) Multiple user session lock 5) Session Hijacking 6) Updat...

    €42 (Avg Bid)
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    2 προσφορές
    Blockchain developer 6 μέρες left

    Hello. I am looking for experienced oclam developer. Have to know blockchain, prototcols, c++.

    €478 (Avg Bid)
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    19 προσφορές
    Cryptocurrency mining pool modification 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm trying to modify pool codes in a mining pool using SHA 256 and redeem the hashes in another coins . Basically my device only process SHA 256 but wondering if we could program the pool to convert the algorithm ? please contact me if you have experience in this filed. my method of payment is by creating milestones and release it once the task was completed . had lots of good reviews so far...

    €417 (Avg Bid)
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    13 προσφορές

    A blockchain engagement platform designed to be a nexus for blockchain education, networking, enterprise collaboration and talent discovery. It is a six month project with a fixed pay every month.

    €3246 (Avg Bid)
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    10 προσφορές

    Building supply chain management using blockchain for super market

    €25 / hr (Avg Bid)
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    15 προσφορές
    ERC20 token exchange listing with 1 - 2 eth budget. 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    ERC20 token listing with 1 - 2 eth budget.

    €475 (Avg Bid)
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    23 προσφορές

    hello! we are looking for people who can get us a decentralized crypto exchange you can looking at this website [κάνε είσοδο για να δεις το URL]

    €2135 (Avg Bid)
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    12 προσφορές
    cryptocurrency 5 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    i want to create a cryptocurrency for payment.

    €509 (Avg Bid)
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    23 προσφορές
    Food WheRevolution 5 μέρες left

    I'm fonder of ALFASSA ( [κάνε είσοδο για να δεις το URL] ) and I need a BlockChain's programmers

    €7561 (Avg Bid)
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    Setup Electrum Wallets 5 μέρες left

    I am looking for a blockchain developer experienced in setting up Electrum wallets. Project's description and features is attached.

    €294 (Avg Bid)
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    Blockchain expert. 4 μέρες left

    Hi. I am going to develop new blockchain. I will share details for right freelancer.

    €902 (Avg Bid)
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    32 προσφορές
    Needed ERC20 token Service 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We need ERC20 token Service Developer. We are looking for a highly skilled developer who can provide us ERC20 Services. We are looking for • Get Balance • Token Send/Receive • Token Address Generation • Transaction History Please Note: • You will need to handover the full development source code to us. • Should be developed with PHP CodeIgniter. • We need the se...

    €478 (Avg Bid)
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    18 προσφορές
    Create PIVX based new coin ( Masternode Coin) 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    1. Create a masternode coin like pivx 2. Create block explorer 3. Create QT wallets ( Win - 32-64, Linux, Mac ) 4. Publishing source code in github [κάνε είσοδο για να δεις το URL] masternode guide 6. guide to install the seednode Please note : I require only professional develo...

    €520 (Avg Bid)
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    8 προσφορές

    We need to develop and execute a training program in Blockchain

    €462 (Avg Bid)
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    13 προσφορές
    Cleveland, Ohio EOS Uber App -- 2 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Looking to get an app built on the EOS blockchain that allows riders to receive tokens for their driving service similar to UBER in the Cleveland area. Must have understanding of GPS.

    €3848 (Avg Bid)
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    26 προσφορές
    Cleveland, Ohio EOS Uber App 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Looking to get an app built on the EOS blockchain that allows riders to receive tokens for their driving service similar to UBER in the Cleveland area. Must have understanding of GPS.

    €2047 (Avg Bid)
    €2047 Μέση Προσφορά
    14 προσφορές
    Help create my Blockchain Fork... 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I need a Blockchain Developer capable of producing a fork with basic Blockchain Adjustments like Block Time, Block Reward, Block Halving, Etc. We would like a wallet implemented and designed as well along with several additional aspects to the development but nothing to extensive. We would require someone with at least 2-3 years experience with Blockchain Developer. ***NOT SMART CONTRACTS! SOL...

    €32 / hr (Avg Bid)
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    40 προσφορές

    I need complete guide to create qt wallets, genesis block, block explorer, block chain from scratch. Finished product should include guide for bash file for easy setup of a masternode VPS on Ubuntu 18.04, and QT GUI wallets for Linux, Windows, Mac. Finished blockchain should not have Proof-of-work mining capabilities. All GUI wallets should be capable of hosting masternodes, have an explorer optio...

    €800 (Avg Bid)
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    4 προσφορές

    I receive error when i try mint zerocoin, so i need to fix it

    €18 (Avg Bid)
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    2 προσφορές
    Develop iOS React Native App with Custom Map Building 2 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hi! I want my iOS app to be developed in React Native. It's an app like Uber. I have the Android & iOS version already made up using Objective C. Design & all the things will be same as the existing app in React Native except map. The map should be created for React Native. It’s a simple map like admin can change the colors, can create own icons, colors on map etc in a word, ad...

    €1749 (Avg Bid)
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    Blockchain developer 2 μέρες left

    I want to develop a proprietary service for my customers. Essentially, it's going to be a stripped-down version of blockchain. I need someone who is knows blockchain inside out - to the point where theyre not helplessly enamoured by it. If you know what you're doing, this is a walk in the park. If you're wrapped up in your crypto bubble, stay there, I have no use for you

    €1390 (Avg Bid)
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    35 προσφορές
    Compile new POS/POW coin -- 2 2 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I want to start a new coin POS/POW. Please bid if you have already developed coins. Looking forward for serious dev..

    €676 (Avg Bid)
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    7 προσφορές
    Rubykube / Peatio open source cryptocurrency Exchange 2 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I need some one to install Rubykube/peatio cryprocurrency exchange in Kubernetes or linux, and you should modify backend and frontend ui please bid if you worked kubernetes docker Ruby on rails and blockchain technologies, want to know more details plz chat with me,

    €26 / hr (Avg Bid)
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    16 προσφορές
    fix minor crypto payment processor issues on website 1 μέρα left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    fix minor issues on coinspayment gateaway. btc, eth, and ltc mostly is fixed, just that the exchange rate has a problem. [κάνε είσοδο για να δεις το URL]

    €71 (Avg Bid)
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    10 προσφορές
    fix bug on API 1 μέρα left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    i need a minor bug fix on coinspayment API.

    €43 (Avg Bid)
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    25 προσφορές

    Hello. I want to make a demo of a decentralized video distribution platform using TRON. There are no ads or commercials on this site. My existing site uses Ethereum for micropayments and WebTorrent (in-browser BitTorrent) for streaming. I want to do a very simple proof-of-concept using TRON instead of Ethereum. The viewer comes to the site and uses TRON to automatically send a micropayment to the ...

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    1 προσφορές
    Web app deveoper needed 21 ώρες left

    Progressive web app - to save information in blockchain MVP ... create text message or text box attach photo, take pics, save video, audio ... we want to use Fluree Blockchain Database and Decentralized Apps. database API.

    €670 (Avg Bid)
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    Blockchain based platform developed on Node.js 13 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hello, i am seeking for a developer that can build a blockchain based marketplace where user and business people are able to find each other, for example like freelancer.com is doing but for another target group. The site allows to post the needs for site members while bidding on in a competitive tender process. On the other hand seller can list their "item", user can view it and press ...

    €1543 (Avg Bid)
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    Blockchain Dapp 11 ώρες left

    Need to create Dapp using blockchain technology

    €469 (Avg Bid)
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    19 προσφορές
    LOOKING FOR BLOCKCHAIN/BITCOIN DEVELOPER 8 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I need someone who is very familiar with Masternodes and how they work. I am going to create a platform like [κάνε είσοδο για να δεις το URL] or [κάνε είσοδο για να δεις τ&o...

    €599 (Avg Bid)
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    Change the code of EOS source code (just a file: [κάνε είσοδο για να δεις το URL]) to make it work on another token. One should have complete knowledge of EOS and C, C++.

    €16 (Avg Bid)
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    Create a new Crypto Currency 16 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Create a new Crypto Currency by Improving open source existing codes and ensure its reliability to connect to external environments, and implement sepcific specs and deliverables and high level security.

    €3005 - €5009
    Προεξέχον Σφραγισμένο ΣΜΓ
    €3005 - €5009
    63 προσφορές

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