ReMobile: Simple, Secure Phone Recycling for a Sustainable Future

[GENERAL] Name and surname of main applicant

Wistkey

[GENERAL] Are you delivering this project as an individual or as an entity (whether formally incorporated or not)

Entity (Incorporated)

[GENERAL] Please specify how many months you expect your project to last (from 2-12 months)

4

[GENERAL] Please indicate if your proposal has been auto-translated into English from another language

No

[GENERAL] Summarize your solution to the problem (200-character limit including spaces)

We store all secondhand mobile status data on-chain for full transparency to the retail market, creating real-world use cases leveraging the security of the Cardano blockchain.

[GENERAL] Does your project have any dependencies on other organizations, technical or otherwise?

No

[GENERAL] If YES, please describe what the dependency is and why you believe it is essential for your project’s delivery. If NO, please write “No dependencies.”

NO

[GENERAL] Will your project’s output/s be fully open source?

Yes

[GENERAL] Please provide here more information on the open source status of your project outputs

GitHub will be provided.

All tokenization processes of second-hand mobile phones as real-world assets would be open source.

All research results will be published to the public.

All materials would be on (an) open-source Github repo(s) with Apache-2.0 license.

[METADATA] Horizons

Supply Chain

[SOLUTION] Please describe your proposed solution

We are creating a secure and transparent platform that uses Cardano blockchain technology to provide seamless and sustainable mobile phone recycling and trading. This is what we are planning to build:

Architecture Design with Cardano Logics

We will design an architecture framework that supports smart contract development and implementation for mobile phone recycling. The framework will handle secure data recording for each transaction, including phone inspection, grading, and compensation. Additionally, the user interface (UI) will be designed to create a smooth user experience, and the user journey will be outlined and documented to ensure a straightforward process for participants. The architecture will be tailored for scalability and optimized for the Cardano blockchain’s low-cost and high-efficiency features.

Smart Contract Design and Implementation

We will design and implement smart contracts to record every transaction and key data points, such as phone inspection results, repair history, and compensation details on the blockchain. These smart contracts will ensure that all transactions are transparent, tamper-proof, and fully traceable, benefiting users by providing them with a clear and fair process for phone recycling. The smart contracts will also integrate automated payments, ensuring users receive timely compensation without the need for intermediaries.

Deployment of ReMobile on Cardano

After rigorous unit testing and validation of the smart contracts, we will conduct a full user acceptance test (UAT) to ensure all processes—from phone inspection to payment—run smoothly. Upon successful UAT completion, we will deploy the platform on the Cardano preproduction testnet. At this stage, we will invite the Cardano community to test the features and provide feedback. The final deployment will then occur on Cardano’s mainnet, where we will begin real-world operations, driving both user adoption and on-chain activity.

This solution is unique because it combines blockchain transparency with ease of use, allowing everyday users to recycle and trade phones without dealing with blockchain complexity. By using Cardano, we offer a low-cost, efficient, and scalable platform that benefits environmentally-conscious consumers and businesses alike, while also contributing to Cardano’s ecosystem growth through increased transactions and treasury contributions.

[IMPACT] Please define the positive impact your project will have on the wider Cardano community

Real World Impact

• The ReMobile project will positively impact the wider Cardano community by showcasing a tangible use case for blockchain technology in the circular economy, particularly in e-waste management. Through our blockchain-powered phone recycling and trading platform, we aim to make blockchain more accessible to everyday users, promoting digital inclusion and environmental responsibility. By doing so, we demonstrate the practical value of blockchain to the broader community, aligning with Cardano’s mission of sustainability and decentralized innovation.

Value to the Cardano Community:

• Our project will bring value by highlighting how blockchain can solve real-world problems like secure data management, transparent transactions, and reducing e-waste. This will enhance Cardano’s reputation as a blockchain platform that supports innovative, environmentally responsible projects. Additionally, ReMobile’s social impact focus—introducing blockchain to a larger audience through a simple, user-friendly model—will help drive adoption within the community and beyond, showcasing the inclusive and accessible nature of the Cardano ecosystem.

[CAPABILITY & FEASIBILITY] What is your capability to deliver your project with high levels of trust and accountability? How do you intend to validate if your approach is feasible?

At ReMobile, we have the capability to deliver this blockchain-based mobile phone recycling project with high levels of trust and accountability. Our team, with over 6 years of experience in mobile phone trading and blockchain development, is well-equipped to execute the project successfully, covering both technical and business aspects across Hong Kong and Africa.

Trust and Accountability

ReMobile, backed by Wistkey Technology Consultancy, has a proven track record of delivering large-scale projects. For example, we partnered with leading brands like Client A to develop custom enterprise-grade applications, ensuring secure data management and on-time delivery. In another case, we collaborated with Client B on a blockchain solution, handling over 26,000 devices monthly and maintaining high standards, including SGS and Dekra certification.

Approach Validation

ReMobile has already successfully processed over 26,000 devices per month during our pilot, demonstrating operational excellence and scalability. Our blockchain integration ensures transparency and data integrity at every step, validated through real-time data analytics and third-party audits. This further confirms our approach is both feasible and effective.

Financial Management

Wistkey has consistently managed funds transparently. We will provide regular financial reports, maintain blockchain-enabled accountability, and ensure compliance with all legal and regulatory standards through external audits.

In summary, our team’s expertise, combined with ReMobile’s early success, positions us to deliver this project with high levels of trust and accountability, ensuring value for the Cardano ecosystem.

[PROJECT MILESTONES] What are the key milestones you need to achieve in order to complete your project successfully?

Milestone 1: Preparation and Organization Setup

Duration: 4 weeks

Objective: Establish a solid foundation for the project by setting up the necessary legal and administrative frameworks, assembling the team, and defining project management practices.

Key Tasks:

• Set up the legal entity and administrative infrastructure.

• Confirm the core team members and advisors.

• Establish project management tools and communication channels.

Acceptance Criteria & Evidence:

• Legal entity is officially established and operational.

• Public announcement of core team members and advisors.

• Project management systems are set up and operational.

Milestone 2: Technical Architecture and Design

Duration: 4 weeks

Objective: Develop a detailed technical architecture for both off-chain and on-chain components and finalize the design for ReMobile’s smart contracts.

Key Tasks:

• Draft the full technical architecture, including off-chain and on-chain integration.

• Design and confirm the smart contract logic for phone inspection, grading, and compensation.

• Design the user interface (UI) and user experience (UX) for the ReMobile platform.

Acceptance Criteria & Evidence:

• Full technical architecture document completed and reviewed.

• Finalized smart contract design documented.

• Updated Gitbook or technical documentation reflecting the complete architecture and UX design.

Milestone 3: Research and Smart Contract Development

Duration: 4 weeks

Objective: Begin development of ReMobile’s smart contracts, ensuring the foundation is secure and functional for preproduction testing.

Key Tasks:

• Research and design smart contracts for transparent phone recycling transactions.

• Begin initial coding of the smart contract logic for the key features of the platform.

Acceptance Criteria & Evidence:

• Smart contract logic is developed and documented.

• Smart contract code is open-sourced on GitHub for community feedback.

Final Milestone : Smart Contract Deployment on Preproduction Testnet & Close-out Report

Duration: 4 weeks

Objective: Deploy ReMobile’s smart contracts on the preproduction testnet and conduct a final close-out report with lessons learned.

Key Tasks:

• Deploy the developed smart contracts on a preproduction testnet.

• Gather feedback from internal and external stakeholders through testing.

• Create a comprehensive close-out report detailing the results, feedback, and next steps for public launch.

Acceptance Criteria & Evidence:

• Smart contracts successfully deployed on preproduction testnet.

• Feedback from users and stakeholders incorporated.

• Close-out report published, summarizing test results, next steps, and timeline for the full public release.

This version provides a more gradual approach, ensuring that foundational work is completed before moving on to technical deployment. Each milestone has clear deliverables and acceptance criteria to ensure the project stays on track.

[RESOURCES] Who is in the project team and what are their roles?

Our project team is composed of highly skilled professionals with expertise in blockchain technology, mobile recycling, and sustainable business development. Each team member brings unique skills essential to the success of ReMobile. Below are the core team members, their roles, and LinkedIn profiles.

Chan Kwun Nam - Co-Founder & Technical Lead

• LinkedIn: https://hk.linkedin.com/in/nam-chan

• Role: Chan leads the technical development of ReMobile, overseeing the integration of ReMobile Chain into the platform. He manages the technical infrastructure, blockchain implementation, and ensures that the platform is scalable and secure.

• Experience: With over 10 years of full-stack and mobile software development experience, Chan has a strong background in blockchain and IT infrastructure. He also co-founded a successful IT firm with over 80 employees.

Amanda So - Co-Founder & Operations

• LinkedIn: https://uk.linkedin.com/in/styamanda

• Role: Amanda leads the operations and marketing aspects of the project. She manages the logistics for informations collection, user onboarding, and ensures a seamless operational process. She also develops marketing strategies to grow the user base and engage corporate clients.

• Experience: With 8+ years of experience in operations and digital marketing, Jessica has a strong background in logistics management and market expansion.

Lau Tin Yat (Tin) - Co-Founder & Product Lead

• Role: Tin is responsible for the product strategy, user experience, and business development of ReMobile. He oversees the design of the platform, ensures that the solution is intuitive and user-friendly, and manages partnerships with key stakeholders.

• Experience: Tin has a strong background in blockchain, technology consultancy, and project management, with experience in coordinating tech solutions and scaling business operations.

Planned Recruitment

To scale the project further, we plan to recruit additional team members with the following specific skills:

1. Blockchain Analyst: To help monitor and analyze blockchain performance, ensuring transaction transparency and security.
2. UX/UI Designer: To optimize the user interface of the mobile and web applications based on feedback from pilot users.
3. Community Manager: To engage with users and the wider Cardano community, ensuring active participation and effective communication with stakeholders.

We have already engaged key team members and discussed their roles, ensuring that they are willing and available to support the project. We have also connected with developers and Cardano experts on relevant channels like Discord and Telegram to seek guidance and technical input.

By leveraging the expertise of this team, we are confident in our ability to deliver the project as proposed.

[BUDGET & COSTS] Please provide a cost breakdown of the proposed work and resources

Our total budget is 150,000 ADA, and it is allocated across four key milestones. Each milestone corresponds to a specific stage of the project, ensuring a structured approach to development, testing, and deployment. Below is the breakdown of costs:

Milestone 1: Preparation and Organization Setup

Duration: 4 weeks

Budget: 30,000 ADA

Cost Breakdown:

• Legal and Administrative Setup: 8,000 ADA

• Establish legal entity, set up necessary administrative frameworks.

• Core Team Recruitment: 10,000 ADA

• Confirm and onboard key team members (developers, project managers, advisors).

• Project Management Tools: 5,000 ADA

• Set up communication and project management tools for efficient workflow.

• Project Management & Coordination: 7,000 ADA

• Oversee team setup and ensure smooth project initiation.

Milestone 2: Technical Architecture and Design

Duration: 4 weeks

Budget: 35,000 ADA

Cost Breakdown:

• Technical Architecture Design: 12,000 ADA

• Develop the off-chain and on-chain architecture for ReMobile.

• Smart Contract Design: 8,000 ADA

• Finalize the design of the smart contracts for phone inspection, grading, and compensation.

• UI/UX Design: 7,000 ADA

• Design user interfaces for the mobile and web platforms.

• Project Management & Documentation: 8,000 ADA

• Oversee the development process and document the technical design.

Milestone 3: Research and Smart Contract Development

Duration: 4 weeks

Budget: 40,000 ADA

Cost Breakdown:

• Smart Contract Development: 15,000 ADA

• Research and develop the smart contracts for secure phone recycling transactions.

• Initial Testing & Debugging: 10,000 ADA

• Perform internal testing to verify the functionality, security, and integrity of the contracts.

• Open Source and Community Auditing: 5,000 ADA

• Publish the smart contract code on GitHub for community review and feedback.

• Infrastructure Costs: 5,000 ADA

• Set up testing environment and infrastructure.

• Project Management: 5,000 ADA

• Manage the development process and coordinate the open-source release.

Milestone 4: Smart Contract Deployment on Preproduction Testnet & Close-out Report

Duration: 4 weeks

Budget: 45,000 ADA

Cost Breakdown:

• Smart Contract Deployment on Testnet: 12,000 ADA

• Deploy and monitor smart contracts on the preproduction testnet.

• User Feedback and System Optimization: 8,000 ADA

• Gather user feedback and optimize smart contract performance.

• Impact Reporting & Close-out Report: 8,000 ADA

• Create a detailed report documenting the results of the testnet deployment, user feedback, and next steps.

• Final Infrastructure Costs: 7,000 ADA

• Maintain the infrastructure and environment during the test phase.

• Project Management: 10,000 ADA

• Manage the final deployment, testing, and reporting process.

Total Budget:

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Total: 150,000 ADA

This cost breakdown reflects the resources needed at each stage of the project, ensuring we have the necessary funding for team recruitment, technical development, and project management, while also allowing for smart contract deployment and testing. Each milestone is carefully planned to ensure that the project progresses efficiently and delivers value to the Cardano ecosystem.

[VALUE FOR MONEY] How does the cost of the project represent value for money for the Cardano ecosystem?

ReMobile provides significant value to the Cardano ecosystem in two key ways:

1.Real-World Use Case Adoption

ReMobile showcases the practical power of Cardano by using blockchain to improve the mobile phone recycling and reselling industry. By recording inspection, grading, and compensation data on the blockchain at a low cost, ReMobile demonstrates how Cardano can be leveraged for transparency and security in real-world applications. This strengthens Cardano’s reputation as a scalable solution for industries focused on sustainability and circular economies, promoting further adoption by businesses looking to benefit from blockchain.

2.Increased Transactions & Contributions to the Cardano Treasury

With ReMobile already operating in Africa and other markets, the platform has the potential to significantly increase on-chain transactions. As more users engage in phone recycling and trading via ReMobile, every transaction—such as storing records or transferring value—generates transaction fees that contribute to the Cardano treasury. More users lead to more on-chain activity, which directly supports the growth and sustainability of the Cardano network.

By driving real-world adoption and contributing to on-chain activity, ReMobile delivers excellent value for money, ensuring a steady flow of transactions that benefit both the platform and the Cardano ecosystem.