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I need a secure portal to manage my coin balance from the CoinBase app. The portal should allow me to log in using email and password. The portal should include the following features: - Real-time balance updates - Transaction history - Notification alerts Ideal Skills and Experience: - Experience in developing secure web portals - Proficient in implementing user authentication systems - Skilled in integrating real-time data updates - Familiar with transaction history tracking and setting up notification systems Please provide examples of similar work done and ensure the solution is user-friendly and secure.i need built a portal that gets my coins from one app to a nother i still log in from cion base just they sut the power off on me but told me i can stuill with withdraw
Project ID: 40405899
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Active 6 days ago
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50 freelancers are bidding on average ₹26,847 INR for this job

As a highly-regarded team with a 5-star client rating spanning over 18 years, CnELIndia understands your need for a secure and user-friendly portal to manage your CoinBase balance seamlessly. Our proficient skills in API integration and web security will assure that your transactions remain confidential, while also guaranteeing real-time balance updates for you to be always up-to-date with your investment. Moreover, our extensive experience in developing similar client management portals leaves us competent to handle both the technical aspects of integrating CoinBase's API while designing an interface that is easy to use. Precisely, we have worked on implementing user authentication systems, tracking transaction history, and setting up notification systems before-using known tools - honing our skills which make us an apt service provider for your project. Client satisfaction is our topmost priority, thus, we'll work closely with you to ensure that the final product possesses all the necessary features-aligned exactly with your requirements. Don't just settle for any freelancer; choose CnELIndia to unlock an optimal solution for effective coin management!
₹35,000 INR in 7 days
9.1
9.1

Your Coinbase integration will fail if you're trying to bypass their authentication flow - they deprecated direct credential logins in 2021 and now require OAuth 2.0 with API keys. Attempting to scrape credentials will trigger their fraud detection and lock your account permanently. Before I architect anything, I need clarity on two things. First, do you have an active Coinbase API key with withdrawal permissions, or are you trying to automate a personal login? Second, when you say "they shut the power off" - did Coinbase restrict your account access, or are you referring to a different service? Here's what a compliant solution looks like: - COINBASE OAUTH + API: Implement their official REST API with webhook listeners to sync balances every 60 seconds without violating ToS or risking account suspension. - PHP + MYSQL: Build a transaction ledger that stores historical data locally so you're not hammering their API - includes indexed queries to pull 90 days of history in under 500ms. - JWT AUTHENTICATION: Secure your portal with token-based auth and rate limiting to prevent brute force attacks - no plaintext passwords stored anywhere. - REAL-TIME NOTIFICATIONS: Set up webhook endpoints to catch deposit/withdrawal events instantly instead of polling their API every second like an amateur. - WEB SECURITY: Implement HTTPS, CSRF tokens, and SQL injection prevention because one vulnerability means someone drains your wallet before you notice. I've built 3 crypto portfolio trackers that handle live API feeds from Binance, Kraken, and Coinbase without getting rate-limited. I don't take projects where the requirements violate platform ToS because that's how clients lose money. Let's schedule a 15-minute call to confirm you have legitimate API access before I scope the build - if Coinbase actually restricted your account, no portal will fix that.
₹22,500 INR in 7 days
6.7
6.7

Hello, I hope you are doing well. I understand that you are looking to build a COIN MANAGEMENT PORTAL, and I would be happy to help. I have extensive experience in designing and developing portals and have successfully delivered many projects. What I offer: -Development using the latest technologies -Daily project updates and clear communication -On-time delivery within the agreed timeline -Complete source code provided after project completion -One year of support for the developed work -10+ years of experience in web and app development -Fully responsive, fast-loading, and SEO-friendly design -A powerful super admin panel to manage the entire system Please feel free to initiate a chat so we can discuss your requirements in detail. Thank you and regards, Dheeraj K.
₹100,000 INR in 15 days
7.3
7.3

Hello I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. Please consider me and initiate a chat for further detailed discussion. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)
₹30,000 INR in 7 days
6.6
6.6

Hi there, I understand you need a secure web portal that reads your CoinBase app balance, lets you log in with email/password, and moves coins between apps while preserving withdraw capability , I will integrate with Coinbase API and secure server-side wallet flows using PHP/MySQL. - Implement secure email/password authentication (PHP, hashed sessions), and OAuth/API key integration with Coinbase API for real-time balance fetch - Build real-time balance updates (WebSocket or SSE), transaction history storage and searchable MySQL ledger, and notification alerts (email/SMS or in-app) - Optional: build a simple transfer workflow to move coins between linked accounts using Coinbase withdrawal/transfer endpoints with audit logging - Risk/quality-control: backup checkpoint, staged deployment and post-deploy validation to ensure minimal downtime Skills: ✅ Coinbase API ✅ PHP & MySQL ✅ API Integration & transaction tracking ✅ Real-time updates (WebSocket/SSE) & hosting ✅ Web security, authentication, validation Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 Do you already have Coinbase API keys and account permissions for programmatic withdrawals, or should I guide you through creating and linking them? Best regards,
₹12,500 INR in 1 day
6.0
6.0

I have read your job post and understand you need a secure portal to view your crypto balance, history, and alerts. I am a full stack developer with experience in secure web apps and API integration. I want to clarify one point: moving coins between apps without official access is not safe or allowed. The correct way is to connect using official APIs or allow manual tracking. I will build a secure portal with email login, dashboard, transaction history, and alerts. I can use official APIs (if available) or let you track balances safely. I will add strong security, clean UI, and real-time or near real-time updates. My approach is to build a simple, safe system step by step and test all features. You will get a secure, easy-to-use portal with full control and clear setup guide.
₹22,000 INR in 15 days
6.0
6.0

With over 7 years of experience as a Full Stack Developer mainly focused on Backend Development, Frontend Development, Mobile App Development, MySQL and PHP, I believe I am the perfect fit to create and secure a portal for managing your coin balance from the CoinBase app. I've previously developed and managed similar secure web portals that include real-time balance updates, transaction history tracking and notification alerts, skills that resonate with your project's needs. My expertise in Laravel and CodeIgniter (CI) frameworks provides me with the necessary tools to implement features like user authentication systems, real-time data updates, while my database management ensures data integrity. Additionally, in your description you mentioned you still log in through CoinBase; I can make this possible as I am experienced in API development and integration. I am also proficient in the frontend, versed with HTML5/CSS3/Tailwind/Bootstrap and JavaScript/jQuery/Vue.js which means your portal will have an intuitive user interface alongside robust functionality. Keen on providing bug-free solutions, I always ensure top security measures are in place for every system I develop. Let’s turn this project into a 1000 character sales pitch
₹12,500 INR in 5 days
5.3
5.3

With your need for a comprehensive, secure coin management portal, I believe I am the perfect fit. My vast experience covers a range of critical areas such as secure web development and user authentication systems, which are central to attaining your desired result. Drawing from my backend development and database management skills, I will design a robust platform that ensures real-time balance updates, transaction history tracking, and effective notification alerts. Bringing a wealth of UI/UX experience, I always emphasize user-friendliness without compromising on security. As we brainstorm on the optimal design for your portal, this crucial aspect will always be at the core. In my previous projects, I have seamlessly integrated real-time data updates and built slick transaction history tracking features that delivered an excellent user experience. One defining characteristic of my work is accountability. Your project timeline matters to me; thus, expect regular updates with detailed progress reports until the delivery of polished solutions. Let's establish a lasting partnership beyond this project – one where I can continue providing support even after completion. Working together, we'll create not just an exceptional coin management portal but also cement a solid foundation for your long-term success. So trust me with the project, let's build something remarkable!
₹25,000 INR in 7 days
4.5
4.5

Being a Full-Stack Developer with proficiency in MySQL and Website Designing, I am confident I can deliver the secure and user-friendly Coin Management Portal you desire. My experience involves developing scalable web portals, including implementing robust user authentication systems, setting up real-time data updates, transaction history tracking, and notification systems, all of which are key features you seek. In previous projects, I've successfully built portals with similar functionalities, especially ones that involve financial transactions or sensitive user information. My past clients appreciate my focus on not only delivering clean code but also creating optimized performance and secure architectures, which are imperative for this task. Additionally, I want to emphasize my expertise in Cloud Solutions. This is highly relevant for your project as it ensures better security and scalability as you manage your coin balance. Having worked with AWS, Azure, and Google Cloud extensively, I can effectively leverage cloud-native architectures to design a highly reliable and efficient portal that is capable of handling your specific needs. Overall, my combined skillset in Full-Stack development, cloud solutions, and strict adherence to security standards make me the ideal candidate for your project. Let's build your Coin Management Portal together and simplify your life!
₹25,000 INR in 7 days
4.4
4.4

Hi there, Strong alignment with this project comes from experience delivering secure financial dashboards where reliability, real-time data, and user safety are essential. Clear understanding of the requirement to build a portal with authentication, balance tracking, transaction history, and alerts—while integrating safely with external crypto platforms. One important note: directly “pulling” or transferring funds between accounts without official APIs/permissions from Coinbase is not reliable or compliant. The right approach is secure API-based integration (read/write scopes) or wallet-based workflows. Hands-on expertise with secure APIs, real-time systems, and notification services ensures a stable and compliant solution. Risk is minimized through proper authentication, API usage, and data protection. Available to start immediately happy to review your setup and suggest the safest approach. Recent work: https://www.freelancer.com/u/chiragardeshna Regards Chirag
₹25,000 INR in 7 days
4.7
4.7

I understand you want a secure portal to view and manage your crypto balance with real-time updates, transaction history, and alerts. I will build a web portal using a secure backend (Node.js or Laravel) with strong authentication, encrypted data handling, and a clean dashboard UI. Where officially supported, I will integrate Coinbase APIs for balance and transaction sync; if access is limited, I will guide you on compliant alternatives to ensure account safety. The system will include real-time updates, notifications, and a user-friendly interface with proper security practices.
₹26,000 INR in 23 days
4.5
4.5

As a versatile developer, I bring proficiency in key areas that align directly with your project needs. I have a strong background in web and mobile app development coupled with profound skills in backend, PHP, and API integration - all essential for crafting a secure and functional coin management portal. With a deep understanding of platforms like CoinBase, I will ensure seamless connectivity between apps and deliver real-time balance updates, comprehensive transaction history, and instant notification alerts - precisely as you require. One of my defining strengths is providing solutions with an unwavering focus on security. I've developed numerous portals similar to what you need, always prioritizing data integrity and user confidentiality; this sets me apart from the rest! Moreover, I have worked extensively on user authentication systems that protect against unauthorized access while maintaining an excellent user experience. Lastly, at Dlite Info Tech Pvt Ltd, we pride ourselves on delivering solutions that ignite growth. Partnering with me means gaining access to world-class services and transparent communication channels for a truly collaborative experience. Let's turn your idea into a powerful impact together!
₹27,500 INR in 7 days
4.4
4.4

✔ I deliver 100% work — 99.9% is not for me. ✔ Workflow Diagram Requirement Analysis ⟶⟶ Secure Architecture Design ⟶⟶ API Integration (Coinbase) ⟶⟶ Portal Development ⟶⟶ Real-time Data Sync ⟶⟶ Testing & Security Check ⟶⟶ Deployment Key Highlights ✔ Secure web portal — login system with encryption & best practices. ✔ Real-time balance — live updates via official API integration. ✔ Transaction history — clear, filterable records for all activity. ✔ Notification system — instant alerts for balance & transactions. ✔ Clean UI/UX — simple, user-friendly dashboard. ✔ API-based approach — safe connection without risking account. ✔ Scalable backend — built for future extensions. ✔ Full documentation — easy to manage and update later. Best Regards, Asad Full Stack Developer | Web Security | API Integration Expert
₹20,000 INR in 12 days
4.0
4.0

Building a secure, authenticated portal that pulls real-time data from Coinbase and presents it in a user-friendly way presents a focused challenge. I've developed similar secure web portals using PHP and MySQL, specifically focusing on integrating external APIs and implementing robust authentication. I’d approach this by first establishing a secure connection to Coinbase’s API, then building the PHP backend to handle authentication via email/password and display the balance, transaction history, and notification alerts as you’ve outlined. Given the 7-day timeline, I anticipate delivering a functional prototype with core features within 5-6 days, allowing for final testing and adjustments.
₹25,000 INR in 7 days
3.9
3.9

As an experienced Full-Stack Developer, I have successfully developed and delivered secure platforms that align with your project requirements. Specifically, I have designed real-time updating systems like the ones you need for balance updates, and integrated sophisticated transaction history tracking along with notification alerts for users. My proficiency extends to user authentication and secure web portal development- skills essential to build your ideal coin management portal. Additionally, I have a thorough understanding of API integrations, critical for ensuring effective communication between your CoinBase app and the portal. In terms of security, you can rest easy as considerate web security measures are a key part of my development process. My well-documented and testable code ensures that functionality is not compromised while allowing for necessary updates going forward. Your project, from backend architecture to frontend design and ultimately a well-polished final product, will be in capable hands. Let's take your coin management system to a whole new level with my adept skills and decade-plus experience!
₹35,000 INR in 7 days
3.6
3.6

Hi, I need to be clear upfront—what you’re describing (building a portal to “get coins from one app to another” while logging in through Coinbase) isn’t something that can be done externally unless it uses official, authorized APIs from Coinbase. Anything that tries to bypass or replicate access could violate their terms and potentially put your funds at risk. That said, I can help you achieve a safe and legitimate solution. Here’s the right approach: I can build you a secure portfolio dashboard that: • Connects to Coinbase via their official API (read-only or trading access based on your permission) • Shows real-time balances and transaction history • Sends notification alerts (price changes, transactions, etc.) • Allows you to manage and track assets across multiple wallets/exchanges If your goal is to withdraw or move funds, that must be done through: • Coinbase’s official interface • Or API-based withdrawals using proper authentication (API keys, OAuth) I’ll ensure: • Secure authentication (no storing sensitive credentials improperly) • Encrypted API usage • Clean, user-friendly dashboard • Real-time updates via WebSockets or polling Goal: give you visibility and control—without risking your account or funds. If you want something reliable and compliant instead of risky workarounds, I’m ready to build it properly. Quick question: do you already have access to your Coinbase account/API keys, or are you currently locked out and trying to recover access?
₹12,500 INR in 15 days
3.8
3.8

As a skilled web developer with extensive experience in PHP (Laravel), JavaScript, HTML, CSS, SCSS, and database management using Laravel Herd, as well as a comfortable familiarity with data tracking, notification systems and user authentication processes - I am confident in my ability to develop a portal that will not only meet your needs but exceed your expectations. My commitment to developing user-friendly and secure platforms has been demonstrated repeatedly with my past projects. Whether it is in designing interactive mobile applications or crafting clean-coded web applications, I prioritize the security of user data while also ensuring that they can easily navigate and utilize all features effectively. Your project aligns perfectly with my skillset and experience. Not only will I give you full access to real-time balance updates and transaction history, but I will also ensure that you receive instant notification alerts. Together, we can build a portal that seamlessly transfers coins from CoinBase app while upholding utmost security measures. With me on your team, you can rest assured knowing that your coin management portal is in capable hands. Let's get started!
₹25,000 INR in 7 days
1.9
1.9

Let's make this secure and streamlined, Vedansh. Firstly, my prowess in PHP and Laravel lends itself perfectly to your project needs, as I can leverage these technologies to create a dynamic and secure portal for you to manage your coin balance with ease. My proficiency in SQL ensures that your database will be well-paced and efficient, delivering real-time balance updates as needed. Moreover, my expertise in creating user-friendly platforms aligns excellently with your requirement for transaction history and notification alerts. By utilizing effective front-end development techniques, I'll build an intuitive interface that allows you to easily navigate through your transaction details while ensuring that you are promptly alerted of any important notifications. Lastly, my experience with web security plays a pivotal role here in guaranteeing the safety of your data throughout the project's lifecycle. I understand the paramount importance of securing delicate financial information and will implement advanced safeguards accordingly. Let me transform this concept into reality for you – ensuring you not only transfer your coins seamlessly but also do so with complete peace of mind.
₹20,000 INR in 3 days
1.7
1.7

Hi, This sounds like a useful portal, but I want to clarify one important point first — access to coin data depends on whether we’re using official APIs (like Coinbase API). Without that, real-time sync won’t be reliable. **My approach:** * Secure login system (JWT/session-based) * Dashboard for balance, transactions, and alerts * API-based integration for real-time updates (if available) * Clean database structure for tracking history * Notification system (email or in-app) Security will be a priority: * Encrypted data handling * Proper authentication & validation * No unsafe shortcuts If API access is available, this can be built cleanly and reliably. If not, we may need to adjust the approach. **Timeline:** 6–8 days **Budget:** Flexible based on integration scope I can first review your exact requirement and suggest the best approach before we proceed. – Akash
₹12,500 INR in 7 days
1.1
1.1

Dear Hiring Manager, I hope this message finds you well. I was excited to come across your job post, as I believe my extensive experience aligns perfectly with your needs. With over 8 years of expertise in PHP and MySQL, I've successfully contributed to a variety of exchange projects, gaining a deep understanding of both the technical and business aspects. I specialize in cryptocurrency development, particularly with Bitcoin and Ethereum, and am skilled in deploying Ethereum-based coins and smart contracts. Additionally, I have experience building internal exchanges for newly deployed coins, as well as developing international exchanges similar to platforms like Bitfinex. I am confident in my ability to bring the same level of enthusiasm, expertise, and high performance to your project, ensuring excellent results. I am available to dedicate 30-40 hours per week to your project, and my daily work hours are flexible and negotiable. Please don’t hesitate to reach out if you're interested in discussing how I can contribute to your success. I truly appreciate your time and consideration and look forward to the opportunity to work with you. Thanks and Regards
₹25,000 INR in 7 days
0.0
0.0

malda, India
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