Blockchain, is a technology that encompasses digital records or information, referred to as “blocks”, that are linked together securely and share the same network. This distributed ledger technology is the backbone of a new wave of innovation being implemented into our lives, with new disruptive applications and solutions seen in a growing number of industries. Clients may hire a Blockchain Developer to harness this power and build a secure digital platform tailored to their business needs.

A Blockchain Developer can create unique solutions leveraging blockchain technology to securely store, access, mine and distribute data in an efficient manner. They can leverage features such as blockchain tokens for payments, smart contracts for automated transactions, privacy layers and data protection techniques. Additionally, the expertise of a Blockchain Developer will ensure the project complies with industry standards, ensuring secure data and validation.

Here's some projects that our expert Blockchain Developer made real:

  • Creation of custom applications for fast and secure NFT (Non-Fungible Token) transactions
  • Developments of tools that allow synchronization with physical products using Bluetooth protocol
  • Integrations between wallets hosting cryptographic assets with ecommerce providers
  • The establishment of exploratory networks to provide insights into decentralized ecosystems
  • Developments to foster the growth of peer-to-peer energy trading networks

At Freelancer.com customers have posted amazing projects covering a variety of use cases related to blockchain utilising the Freelancer verified experts. With help from professionals on Freelancer.com customers can create unique projects addressing their business needs with safety, security and legality in mind. Rock your blockchain project today and hire an expert Blockchain Developer on Freelancer.com now!

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    Ich suche jemanden der mir ein Flashloan Programm baut das voll Automatisch Arbeitet. Bitte schauen sie sich die PDF im Anhang an.

    €498 (Avg Bid)
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    ( Apply only if you can start ASAP) I'm in need of a well versed writer in the domain of blockchain technology, specifically with a deep understanding of Smart Contracts and Distributed Ledger Technology. The purpose of this report is to delve into these specific areas, exploring the pivotal details, potential applications, and their advanced functionalities. Key deliverables and capabilities required: • Comprehensive understanding of Blockchain, smart contracts, and distributed ledger technology. • Strong research and analytical skills to explore these aspects thoroughly. • Constructive writing, able to arrange findings in a clear, informative report. • Preferably if you have written blockchain-related reports previously. As this project doesn't specifi...

    €11 / hr (Avg Bid)
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    ( Apply only if you can start ASAP) I'm in need of a well versed writer in the domain of blockchain technology, specifically with a deep understanding of Smart Contracts and Distributed Ledger Technology. The purpose of this report is to delve into these specific areas, exploring the pivotal details, potential applications, and their advanced functionalities. Key deliverables and capabilities required: • Comprehensive understanding of Blockchain, smart contracts, and distributed ledger technology. • Strong research and analytical skills to explore these aspects thoroughly. • Constructive writing, able to arrange findings in a clear, informative report. • Preferably if you have written blockchain-related reports previously. As this project doesn't specifi...

    €12 / hr (Avg Bid)
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    As a Solana enthusiast, I'm currently in need of a blockchain developer who can setup a multisender for a mass token airdrop. The multisender should have the following features: - Customizable token distribution: Having the ability to manage and customize token distribution is crucial for a successful airdrop. - Real-time tracking of transactions: I'd also like to be able to track transactions in real time to monitor how the airdrop is progressing. While I'm not certain of the project timeline currently, what's for sure is I want the multisender to be reusable for future airdrops. Ideal candidates should have: - Proficiency in Solana blockchain development - Experience in developing token airdrop mechanisms - Strong understanding of smart contracts - Ability to w...

    €230 (Avg Bid)
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    ( Apply only if you can start ASAP) I'm in need of a well versed writer in the domain of blockchain technology, specifically with a deep understanding of Smart Contracts and Distributed Ledger Technology. The purpose of this report is to delve into these specific areas, exploring the pivotal details, potential applications, and their advanced functionalities. Key deliverables and capabilities required: • Comprehensive understanding of Blockchain, smart contracts, and distributed ledger technology. • Strong research and analytical skills to explore these aspects thoroughly. • Constructive writing, able to arrange findings in a clear, informative report. • Preferably if you have written blockchain-related reports previously. As this project doesn't specifi...

    €12 / hr (Avg Bid)
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    I'm in need of a skilled developer to create a blockchain + React.js application that will ensure supply chain transparency. The software should have the following functionalities: - Tracking product origin and movement: This is crucial for our users to have visibility on where the product is coming from and its path to them. - Recording and verifying transactions: Ensuring the authenticity of transactions in the supply chain is paramount for us. - Generating real-time reports: The system should be able to provide real-time reports on product status, locations, and transactions. These reports will be accessible to users in different parts of the supply chain. Access control and permissions are also a key aspect of this project. We need you to set up: - Multiple user roles with vary...

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    I need a blockchain expert to develop a supply chain solution for my retail and manufacturing businesses. The system should have the following characteristics: - **Transparency and Traceability**: The system should allow for real-time tracking of goods and assets along the supply chain. It should provide clear visibility and accountability. - **Smart Contracts and Automation**: I need smart contract functionalities to automate certain processes within the supply chain, such as payment upon successful delivery or triggering alerts for restocking. The ideal candidate should have a strong background in blockchain development with experience in creating supply chain solutions. Knowledge of retail and manufacturing industries is a plus. I need this project completed as soon as possible.

    €56 (Avg Bid)
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    Job Title: Blockchain Developer Company: ASML Contact: Rob Claassen program manager About Us: ASML is a dynamic and innovative company at the forefront of hardware and software delopment. We are seeking an experienced Blockchain Developer to join our team and contribute to our cutting-edge projects. Position: Blockchain Developer Type: Full-time or Part-time for contract Location: 100% Remote Salary: Competitive, commensurate with experience, $5k ~ $ 8k Requirements: -Proficiency in Smart Contract development -Proficient in Solidity, as the smart contract will be developed in this language -Strong English communication skills -Bachelor's degree in a relevant field -Experience with web development technologies -Knowledge of modern web application design and best practices -Web3 &...

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    Block chain Technology Exploration 6 Tage left
    VERIFIZIERT

    ( Apply only if you can start ASAP) I'm in need of a well versed writer in the domain of blockchain technology, specifically with a deep understanding of Smart Contracts and Distributed Ledger Technology. The purpose of this report is to delve into these specific areas, exploring the pivotal details, potential applications, and their advanced functionalities. Key deliverables and capabilities required: • Comprehensive understanding of Blockchain, smart contracts, and distributed ledger technology. • Strong research and analytical skills to explore these aspects thoroughly. • Constructive writing, able to arrange findings in a clear, informative report. • Preferably if you have written blockchain-related reports previously. As this project doesn't specifi...

    €4 - €8 / hr
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    I'm in need of a seasoned React.js developer to help build a new web application that's responsive and user-friendly for the general public. First we need change some page html in react.js. than we will build an webapp with. Key Requirements: - Building a new web application: The primary goal of this project is to develop a new web application. Experience in building user-friendly and intuitive web applications will be crucial. - Responsive design: The application must be built with a responsive design. Ensuring that the application looks great and functions well across various devices and screen sizes is a top priority. - General public target audience: The web application is intended for use by the general public. This means that the user interface and overall user experienc...

    €12 / hr (Avg Bid)
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    I'm looking for a skilled developer proficient in Blockchain and React to create a hybrid application. This application will primarily use blockchain technology for data validation and storage purposes when building its architecture. While it's not mandatory, having expertise or understanding of user account management or real-time data visualization would certainly be advantageous. A successful completion of the project requires the application to be functional, reliable, and user-friendly.

    €1368 (Avg Bid)
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    I am looking to acquire a crypto currency startup that is already operational. Here are the key aspects: - Status: The startup must be operational and have its own functioning blockchain technology. - Purpose: This acquisition is to expand my current business portfolio. - Post-Acquisition Support: I will require assistance with business strategy for seamlessly integrating this startup into my current operations. Ideal candidates should have previous experience in brokerage services, startup acquisitions, and the implementation of business strategies post-acquisition. A background in blockchain technology would be advantageous, as it would help ensure a smooth transition and integration process.

    €913 (Avg Bid)
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    Crypto Arbitrage Bot Developer 6 Tage left
    VERIFIZIERT

    I'm in need of a skilled developer to craft a cryptocurrency trading bot that can execute arbitrage trades. The main functionalities of the bot will be to compare prices across different exchanges and exploit any price differences for profit. Specifically, the bot will be designed to work with Binance as the primary exchange. Ideal Skills and Experience: - Extensive experience in developing trading bots, particularly in the cryptocurrency domain. - Proficient in implementing arbitrage strategies within trading bots. - Previous work with Binance API is an advantage. - Strong understanding of cryptocurrency market trends. Key Requirements: - Design and development of a custom crypto arbitrage bot. - Implementation of automated trading rules for arbitrage. - Integration of Binance API ...

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    Hey i am looking for a mutlichain wallet connect , blockchain and interface , looking for someone with experience in smart contract and complex smart contracts and multichain development.

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    I need an expert in cryptocurrency to conduct an in-depth fundamental analysis of all types of Altcoins. The ideal candidate should have a deep understanding of the following: I am primarily interested in the top 7500 Altcoins. This analysis should include a detailed report on the status of decentralization, percentage of ownership, Fundamental Analysis and Technical Analysis, any other pertinent information. Please apply if you have proven experience in this field and can deliver comprehensive, insightful, and actionable analysis on the Altcoin landscape.

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    Blockchain auto bot development 5 Tage left
    VERIFIZIERT

    As someone looking to develop a auto bot.... Looking forward to chat for discussion

    €416 (Avg Bid)
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    Someone stole some btc from my wallet late last year, and I need a bitcoin blockchain analysis forensic expert to help track it down, or identify any clues that will lead to the perpetrators. I think the btc was stolen via anydesk I have the anydesk target machine ID, and the transaction One of the transactions was The funds ended up in this wallet: Can you connect this to a kyc wallet? Or identify next steps? Please bid if you have experience recovering bitcoin or blockchain analysis. because of scams, please show examples of your previous work

    €654 (Avg Bid)
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    ICO experience only. I'm seeking an experienced blockchain developer to create an ERC-20 token with the goal of launching a new cryptocurrency. The token will be the backbone of the startup www.infinidium.ca. Infinidium is revolutionizing datacenter/cryptomining cooling infrastructure and energy efficiency performance with the worlds first patented server cooling system which, requires no energy while producing power from waste heat. Opportunity for coins as project advisor of issued coins after the completion of the ICO as a success fee. - **ERC-20 Token Creation**: Expertise in generating a secure and functional ERC-20 token, aligned with current standards but also allowing room for custom features down the line. - **Implementation Speed**: Given the urgent nature, I need someon...

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    This is a long term project that requires previous experience with rust programming language (similar to C / C++) for Solana programs (Block chain based smart contract). The program is a type of AMM that can receive tokens as liquidity and allow user to swap tokens with the program directly. No frontend is needed. Specific details will be provided to relevant applicants. Please make sure you are familiar with and in your reply please tell me if you are familiar with the rust/ Solana development framework.

    €734 (Avg Bid)
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    I am in need of an experienced Blockchain developer with a deep understanding of Bitcoin and other cryptocurrencies. Primarily, the project entails developing a crypto payment processor that supports Bitcoin but can handle other currencies as well. Key functionalities should include: - Transaction confirmation - Payment status update - Conversion to different cryptocurrencies Please note, the design specifics will be provided, so the user interface skills should include ability to work with existing designs. Successful applicants will be those who present extensive experience in similar projects and a high expertise level in Bitcoin specifically.

    €207 (Avg Bid)
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    I'm in need of a professional to enhance my existing blockchain tender allocation website. Some of the key features I'd like you to address include: - Implementation of a secure login button: This is to ensure access is granted only to authenticated users. - Implementation of MFA: I'd like to incorporate Multi-Factor Authentication to add an extra layer of security to the system. - Integrating edge computing technologies: It's important for the website to leverage these technologies for improved performance and efficiency. The right candidate for this job should have a solid understanding of blockchain technology and experience in developing secure web applications. A background in implementing and integrating security features is crucial. Experience with edge comput...

    €369 (Avg Bid)
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    We are looking for NFT Smart Contract Developer Project Objective: Develop a smart contract for creating and managing unique NFTs (Non-Fungible Tokens) on the Ethereum blockchain platform. Key Requirements: NFT Creation: Implement a function to create new NFTs with unique identifiers, metadata, and associated attributes. Provide the ability to specify the owner of the NFT upon its creation. Ownership Transfer: Implement a function to transfer ownership of an NFT from one Ethereum address to another. Ensure mechanisms to protect against unauthorized transfers. Ownership Verification: Develop methods for verifying ownership of a specific NFT by a given Ethereum address. Provide public access to ownership data of NFTs. Metadata Handling: Ability to store metadata of NFTs, such as images...

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    I'm looking for an experienced 3js developer who can create an engaging metaverse with a cartoonish art style. The metaverse should be interactive with customizable avatars and support real-time multiplayer gameplay. Features needed: - Interactive Environments: Users should be able to interact with the world and objects within it. - Customizable Avatars: Users should be able to customize their online persona in multiple ways. -Real-time Multiplayer: The metaverse needs to support multiple users interacting in real-time. Interaction: The primary mode of interaction should be through keyboard and mouse controls. A detailed understanding of user controls in a 3D environment is important. Skills and Experience: - Expertise in 3js for creating 3D environments - Experience with creating...

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    We are seeking a forward-thinking AI Developer who is deeply interested in blockchain technology and cryptocurrency. The ideal candidate will have experience in developing machine learning models and a strong understanding of blockchain fundamentals.

    €35 / hr (Avg Bid)
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    Memecoin Website & Staking Dashboard Developer We are seeking a talented and experienced Freelance Web Developer to design and develop an engaging website and secure staking dashboard for our new memecoin project. This is an exciting freelance opportunity to showcase your skills in cryptocurrency and decentralized finance. Project Overview: - Design a visually appealing and user-friendly website to promote our memecoin and engage the community - Develop a robust staking dashboard allowing users to manage their memecoin assets and staking activities - Integrate the website and dashboard with blockchain technology and smart contracts - Implement data visualization for real-time coin metrics and staking rewards - Ensure top-notch security practices to protect user funds and data Require...

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    I'm looking for an experienced 3js developer who can create an engaging metaverse with a cartoonish art style. The metaverse should be interactive with customizable avatars and support real-time multiplayer gameplay. Features needed: - Interactive Environments: Users should be able to interact with the world and objects within it. - Customizable Avatars: Users should be able to customize their online persona in multiple ways. -Real-time Multiplayer: The metaverse needs to support multiple users interacting in real-time. Interaction: The primary mode of interaction should be through keyboard and mouse controls. A detailed understanding of user controls in a 3D environment is important. Skills and Experience: - Expertise in 3js for creating 3D environments - Experience with creating...

    €149 (Avg Bid)
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    I'm looking for a skilled developer to create a Bitcoin HD wallet with specific features for the web platform. This wallet should also enable the tracking of incoming deposits and ensure secure user authentication. Key Features: - Generate new Bitcoin addresses: The wallet must be able to create and manage a sequence of addresses derived from a single seed. - Monitor transactions: The platform should provide real-time updates on incoming transactions to the user's wallet. - Secure user authentication: secure authentication system to protect the user's funds and personal information. Ideal Skills: - Proficient in Bitcoin and Blockchain technology - Strong experience in web development and security - Familiarity with HD wallet implementation - Knowledge in real-time transa...

    €548 (Avg Bid)
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    I am in need of a proficient developer to create a web application, specifically a sniper app, for the TON Network Blockchain. I am open to the usage of JavaScript, Solidity, and nodejs for this project. I didn't specify the exact features, however, if you have experience with crafting applications of a similar nature, I'd prefer to see your take on it. I have an immediate need for this project, hence it is important that the work is completed as soon as possible. - Key Skills: JavaScript, Nodejs, Solidity - Experience: Previous work on sniper apps or similar projects, familiarity with the TON network blockchain would be highly advantageous.

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    I'm looking to have my utility token listed on Coin Market Cap. The token is built on the Binance Smart Chain, establishing its preeminent functionality. A complete whitepaper, illustrating the motive, design, and purpose of my token, is available for reference, conveying a clear project narrative. Ideal Skills: - Knowledge about cryptocurrency, specifically utility token - Understanding of the Binance Smart Chain - Experience in token listing on Coin Market Cap

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    I'm in need of an expert Telegram BOT developer who can Develop Telegram bot for Solana blockchain Please apply only if you have develop any telegram bot related to blockchain

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    I'm looking for skilled and experienced freelancers across different domains - web development, graphic design, content writing, and more. Your past work and detailed project proposals will be valuable in your application. Please reach out if you are interested in working with me. Thank you.

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    I'm looking for a developer to create a simple starter trading script. This is can be based on another script and does not need to be written from scratch. Develop a simple script that buys a particular cryptocurrency when it drops X% and sells it when it recovers Y%. Once that is established, we can look at adding the usual trading indicators as part of the strategy, but I want to start basic. Ability to customize buy and sell points as well as add different cryptocurrencies. Very Important: Host the script in the cloud for convenience and to avoid personal management responsibilities. I don't want the script to run on a server like AWS that I'd have to manage and continually monitor for uptime, etc. The script should allow for easy parameter adjustments. Consideratio...

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    I am seeking a skilled Blockchain Developer who can create a Smart Contract on the Ethereum platform. The primary function of this smart contract will be to manage and optimize our supply chain processes. Key Responsibilities: - Developing a custom Ethereum smart contract that encapsulates the logic for our supply chain management system - Ensuring the smart contract is secure, efficient, and optimized for our specific use case Ideal Skills and Experience: - Proven experience in developing on the Ethereum platform - Strong understanding of Blockchain technology - Experience in deploying and managing Smart Contracts - Familiarity with supply chain management systems is a plus Please provide examples of previous work related to Ethereum Smart Contracts.

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    I am looking for an intermediate level blockchain developer with a strong understanding of Ethereum. Key Requirements: - Proficient in developing smart contracts - Experience building decentralized applications (DApps) - Competency in token creation and management The ideal candidate should be able to work with the Ethereum blockchain platform and implement these functionalities effectively. A solid understanding of blockchain technology is essential, as well as the ability to work independently and deliver high-quality code. We are not looking for a beginner, so please apply only if you have the relevant experience and can demonstrate your previous work in this area.

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    For my project, I require a Hyperledger Fabric application developed with the functionality of tracking product origin in supply chain management. This tool should provide the verified origin details of a product, offering complete transparency to our key stakeholders - suppliers, distributors, and customers. The ideal freelancer for this job would be an experienced Hyperledger developer, with a strong understanding of supply chain management and proven proficiency in developing blockchain solutions.

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    I'm seeking a TON Blockchain expert to develop an ICO smart contract. The project primarily entails: - Creation of an initial coin offering (ICO) contract on the TON Blockchain. - Ensuring the contract is secure, efficient, and meets the necessary specifications for an ICO. Ideal Skills: - Profound understanding of the TON Blockchain. - Prior experience in creating secure and effective ICO smart contracts. - Ability to deliver high-quality work within a set timeframe.

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    A company operates as an innovative platform offering users the opportunity to earn money by sharing their opinions in surveys. Through a token-based payment system, users acquire token packages and receive appreciation of these assets when responding to surveys available on the platform. Additionally, the system offers a referral program where users can share their referral link and earn commissions when new users sign up through this link. This revolutionary business model aims to make the process of participating in opinion surveys more accessible and profitable for users. 1. Interface do Usuário (Frontend): Development of an intuitive and responsive interface for the overall administrative system and user back office. The overall administrative system should include pages for ...

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    I'm on the hunt for pre-built Web3 games. Further specifications of the game type were left open-ended, so any genre from collectibles, role-playing, to strategy games may be considered. Are you currently working on a Web3 Game? Did you already finish making a Web3 Game? Do you perhaps worked on a Web3 game before and own the rights? We are interested in 1. buying the code and rights 2. Or listing it on our platform This is a unique opportunity where you can sell your existing Web3 Gaming Project to us or list it on our platform. Write down the following: -Platform(s) of the game -Technologies you used to make the game -Concept and type of game (5-10 sentences) -Price estimate I'm NOT looking for someone to build a game from the start!!! You have to have an already working...

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    Complete current project 1 Tag left
    VERIFIZIERT

    Hello. I hope you are doing well. I want to complete my project. My previous developer was unable to continue working on the project and did not share all project information. I and he had an idea for a pre-sale, but I think it's about 80% complete. The idea of completing the project is open to experienced developers, and we hope to complete the project with someone who can both design and build it. I share current version. Please confirm it. If you are interested in my project, please do not hesitate to share your ideas or advice. ( Please check out the project and include in your proposal: total budget, time, schedule for completing one. ) Thanks Timothy

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    Ethereum Smart Contract Developer Needed 22 Stunden left
    VERIFIZIERT

    I need a proficient Solidity and Web3 developer to help build a smart contract on the Ethereum network. The primary functionality of the contract is to facilitate fund transfers and sharing. Ideal Skills and Experience: - Solid experience in Ethereum smart contract development - Expertise in Solidity and libraries - Familiarity with test networks I need to create a smart contract and wallet connection using metamask. Here's an example; On this link, they only can donate using a credit card or debit card. I want to pay with eth test network (using metamask) and the smart-contract is; Person A needs 2000ETH for their project with a deadline of 30 days and share the profit 10% after 10 days of the project to reach the goal of each ETH donated by another person, Person B donat...

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    I am seeking a seasoned blockchain developer to help in an already built project just to clear out a few bugs, nothing special. Expertise required for this project: • Extensive knowledge and experience in blockchain technology and its applications. • Proficiency in implementing data management and security features in a blockchain system. • Knowledge in online IPFS services, particularly infura

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    I'm looking for a highly skilled developer with experience with cryptocurrency, blockchain and bot development. The main objective is to assist me in the creation of a bot focused on Initial Dex Offerings (IDO) participation on both ChainGPT's Launchpad () and Seedify's Launchpad () Key responsibilities: - Develop bot functionality for syncing with IDO countdowns - Enable rapid approval of transactions and execution of swaps on the blockchain as soon as IDOs are live Required skills and Experience: - Experience with bot development, especially within the cryptocurrency & space - Clear understanding of IDO participation mechanisms - Strong problem-solving abilities to navigate any technical challenges that may arise during development.

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    I'm representing a travel online agency, looking to expand our services into the web3 space through the Camino Network. We are in need of a skilled developer to assist us with the following services: - Smart Contracts Development: As we transition to the web3 environment, we need to establish secure payment transactions within our system. The ideal candidate would have experience in developing smart contracts for e-commerce, specifically within the travel industry. - System Development for Selling/Buying Travel Services: We are also looking for support in building a robust system for selling and buying travel services. This system should seamlessly integrate with the Camino Network, providing a user-friendly interface for both us and our potential partners. The successful freelance...

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    I'm seeking an experienced OMNET++ specialist to develop a security simulation model for Intelligent Transport Systems. Key Qualifications: - Extensive experience with OMNET++ simulations, INET, Veins, and SUMO. - Knowledge of Machine Learning and Blockchain. A deep understanding of network analysis and protocols is also necessary. - Proficient in network modeling and event simulation. Bring your knowledge of OMNET++ to create a top-notch wireless network simulation model. This is your chance to showcase your deep understanding of the complex framework of Intelligent Transport Systems. The more detailed the model, the better!

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    Expert Zk-snark Developer 14 Stunden left
    VERIFIZIERT

    Looking for a talented and motivated Zero-Knowledge Proofs developer to Implement a working product in a different blockchain. Please understand its a porting job to a new evm chain. If you have experience before in using zk snarks we will get along. This is not an on the job training work. Only interested in people who already done this. I am a dev, so please keep that in mind when you quote and estimate time.

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    Bitcoin HD Wallet Development for Web 13 Stunden left
    VERIFIZIERT

    I'm looking for a talented developer to create a Bitcoin HD Wallet that runs on the web. The wallet will focus specifically on Bitcoin, not multiple cryptocurrencies. Key Features: - Send and receive Bitcoin: The wallet should allow users to seamlessly send and receive Bitcoin, with a smooth and intuitive interface. - Transaction history: It's essential that the wallet maintains a clear and accessible record of all transactions made by the user. - Address book: A feature to store and manage contacts' Bitcoin addresses is also crucial. Ideal Skills: - Proficient in web development - Experience with blockchain and cryptocurrency wallet development - Knowledge of Bitcoin and its underlying technology - Familiarity with HD wallet concepts I'm looking for someone who can ...

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    I'm in need of a blockchain specialist to create a smart contract for my unique security token. - Specifics: Primarily, the smart contract should center around token creation. - Purpose: This token is going to be a security token, so it's crucial that the smart contract is coded to ensure it meets all the necessary regulatory and security standards. Ideal Skillset: - Extensive experience in blockchain technology - Proficiency in smart contract development - In-depth understanding of token creation - Specialization in security token development is a plus - Knowledge of relevant blockchain coding languages (e.g. Solidity)

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