Spent the last few months building a Layer-1 blockchain from scratch as a way to go deep on post-quantum cryptography in a real system rather than a toy. A few things that might interest this crowd:

• No elliptic curves anywhere. Every signature — transactions, peer identity, admin auth — is ML-DSA-87 (NIST PQC standard). That means 2592-byte public keys and 4627-byte signatures flowing through everything, which forced some interesting stack-management work: ML-DSA-87 signing needs ~4 MiB of stack, so all crypto ops run on an explicit 16 MiB-stack thread to avoid STATUS_STACK_OVERFLOW on Windows (and silent corruption on Linux under load).
• No HTTP. P2P transport is QUIC + TCP with a custom Noise_XX handshake that binds the ephemeral session key to the peer's long-term ML-DSA-87 identity before any application data moves.
• Merkle-Patricia Trie state root with compact (~2 KB) inclusion/exclusion proofs for light clients — went through two iterations to get proof size down from an initial ~25 KB.
• WASM smart contracts via Wasmtime under a strict 16 MiB memory / 512 KiB stack mandate, gas-metered host functions.

Workspace is ~7 crates (types → storage → vm → core, with net-opt decoupled from core via a trait for dependency inversion). Repo: (GitHub - LeechoShoop/primus-project: Post-quantum Layer-1 blockchain in Rust — ML-DSA-87 signatures, Noise_XX P2P transport over QUIC/TCP (no HTTP), Merkle-Patricia Trie state, WASM smart contracts. Solo research/portfolio project, not actively maintained. · GitHub)

This is a solo research project, not under active development going forward — publishing it mainly for anyone curious how a PQ-native L1 fits together end to end, or who wants to pick it apart. Happy to answer questions about any of the design decisions above.

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