The problem Cross chain subscription manager solves

Problem Statement:

Build a Cross-Chain Subscription Manager that allows users to subscribe to services across multiple blockchains. This platform should enable seamless management of subscriptions, automate payments, and support cross-chain interactions for subscription-related actions.

Key Features:

Subscription Management: Users can view, subscribe, and cancel services from a list of available subscriptions.
Payment Automation: Subscriptions are automatically paid on a recurring basis using a cross-chain payment mechanism.
Cross-Chain Execution: Leverage Agoric's smart contracts and IBC (Inter-Blockchain Communication) to handle payments and subscription actions across different blockchains.
Technologies to Use:

Frontend: React for a clean, minimal UI that displays subscriptions and enables user interactions.
Backend: Agoric smart contracts for managing subscription logic (e.g., payment triggers, subscription validity) and IBC for handling cross-chain payments.

Challenges we ran into

1. Frontend Technologies:
   React.js:
   The core framework for building the user interface. React allows for efficient rendering and a dynamic, responsive UI, making it ideal for displaying subscription data and handling user interactions (e.g., subscribing, canceling, and managing subscriptions).

Redux (optional):
For state management across components, especially useful for handling subscription states and payment information across different parts of the app in a centralized way.

Web3.js / CosmJS:
These libraries are used to interact with the Agoric blockchain and other blockchain ecosystems. Web3.js helps connect the frontend to the Ethereum-like chains, while CosmJS is used for interaction with Cosmos-based chains via IBC (Inter-Blockchain Communication).

CSS-in-JS / TailwindCSS (optional):
For styling the frontend, allowing us to create a clean and responsive design quickly. TailwindCSS provides utility-first classes, helping to keep the UI minimal and consistent.

2. Backend Technologies:
   Agoric Smart Contracts (JS/OCaml):
   Agoric's smart contract framework is used for building the backend logic. We write JavaScript (or OCaml for some features) smart contracts to handle the subscription management logic—such as creating, renewing, or canceling subscriptions and automating payments.

Cosmos SDK / IBC (Inter-Blockchain Communication):
IBC facilitates communication between different blockchains, allowing cross-chain payments and interactions. The Cosmos SDK powers the Agoric blockchain, and IBC is used to facilitate secure cross-chain transfers of assets (e.g., tokens) for subscription payments.

3. Blockchain Technologies:
   Agoric Blockchain:
   Agoric provides a secure, JavaScript-based smart contract platform, enabling the development of complex decentralized finance (DeFi) applications, such as our subscription manager, which needs to interact with other chains.

IBC (Inter-Blockchain Communication):
A protocol used for secure and seamless interaction between mult