Scalable Payment Solution for E-commerce

[sadeghte]

Hi Sui Community,

I'm currently exploring the feasibility of integrating a payment solution into our project, and I'm encountering a key challenge: effectively tracking user deposits and managing payment addresses.

Currently, Sui's architecture seems to lack a readily available, built-in mechanism for this kind of granular tracking, which is essential for things like:

• User Identification: We need a way to reliably associate deposits with specific users.
• Deposit Tracking: Knowing exactly where each deposit landed is crucial for reconciliation and auditing.
• Scalability: A robust solution needs to scale with increasing user activity.

I've been researching how other blockchains address this, and I've observed some promising approaches:

• Solana: Solana's Program Derived Addresses (PDAs) offer a strong solution. We could assign a unique PDA to each user, allowing us to track deposits directly to that address.
• Bitcoin (Post-Taproot): Taproot’s deterministic key feature, known as tweaking, allows us to derive multiple addresses from a single private key. This enables us to spend all managed UTXOs across those addresses and, importantly, track deposits associated with a specific user.
• Blockchains with Memos: Some blockchains utilize memos or comments within transactions to provide context and tracking information.

The Question:

Given Sui's architecture, what are the recommended approaches or potential solutions for implementing a payment tracking system? I'm particularly interested in:

• Smart Contract Design: What smart contract patterns or design considerations would be most suitable for managing user-specific deposit addresses and tracking deposits?
• Off-Chain Solutions: Are there any off-chain strategies (e.g., using a separate database to store deposit mappings) that could be integrated with Sui?
• Integration with Sui's Architecture: How can we best leverage Sui’s capabilities (e.g., transaction fees, data storage) to support a robust payment tracking system?
• Security Considerations: What are the key security considerations we need to be aware of when implementing any of these solutions?

I'm open to any and all suggestions and would greatly appreciate the insights.