Category: blockchain

In the first part of this series, we explored the conceptual architecture of a blockchain-based credit card system using multi-signature keys and encrypted spending limits. Now, let’s dive into the technical implementation with concrete Solidity examples. This post will give you production-ready smart contract code that demonstrates how to build a secure, multi-signature credit card…

This post outlines a proof-of-concept for a blockchain-based credit card system integrating multi-signature cryptography and smart contracts to manage spending. It emphasizes creating a secure, flexible architecture while addressing challenges like scalability and regulatory compliance. The proposed system aims to enhance transparency, security, and user control in financial transactions.