At the Polkadot Blockchain Academy I have built several Rust-based projects, each highlighting different aspects of blockchain development, cryptography, and systems programming. These include a Many Time Pad Cracker, a tool designed to crack OTP encryption vulnerable to reused keys; a blockchain developed from scratch, complete with consensus mechanisms and data structures; a UTXO chain node capable of handling blockchain reorgs and maintaining data consistency; a multi-token treasury pallet within the Substrate framework, designed for managing several tokens and spend proposals; and a Merkle multi-proof generator that generates cryptographic proofs for verifying multiple claims in a single Merkle tree efficiently.

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