Immutable data integrity solutions for space exploration

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Encrypt and anchor
Retrieve and decrypt
Contract details(exSat-TestNet)

🌌 Immutable Data Integrity for Space Exploration

🚀 What Inspired Us

The vastness of space isn't the only frontier in need of innovation — so is the integrity of the data we gather from it. We were inspired by the high-stakes nature of space missions, where a single corrupted data file can compromise years of research and billions in investment. Our fascination with blockchain’s immutability and its potential beyond cryptocurrencies drove us to explore a decentralized solution for long-term data verification.

🛠️ How We Built It

Our project combines cryptographic security with decentralized storage and blockchain anchoring:

First, we used AES-256 to encrypt data files locally. The encryption key never leaves the user’s device, preserving privacy.
We then split these encrypted files into chunks and uploaded them to IPFS using Pinata for decentralized and persistent storage.
We connected to the exSat TestNet and anchored the resulting CID (Content Identifier) using a smart contract.
For verifiability, the exSat block explorer shows a timestamp and Bitcoin block hash, proving the file’s existence at a specific time.
Finally, users can input their block address, retrieve the CID, and decrypt their data using their key and IV.

🧠 What We Learned

We deepened our understanding of end-to-end encryption and decentralized file systems.
We explored hybrid blockchain architectures — like exSat’s Proof-of-Work and Proof-of-Stake model.
We learned how to implement tamper-evident systems that can withstand the test of time and trust.

⚙️ Challenges We Faced

Ensuring seamless integration between IPFS and smart contracts without data leakage or key exposure.
Maintaining low latency during file retrieval and verification despite using decentralized infrastructure.
Designing a system intuitive enough for scientists and researchers who may not be familiar with blockchain.

🌍 Our Vision

We believe this platform is a steppingstone toward a more trustworthy era in scientific exploration — one where every experiment, observation, and discovery can be preserved and verified for generations to come.