> For the complete documentation index, see [llms.txt](https://polarischain-1.gitbook.io/polarischain/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://polarischain-1.gitbook.io/polarischain/13.-development-roadmap-and-protocol-evolution/13.1-phase-1-foundation-complete.md).

# 13.1 Phase 1: Foundation (Complete)

The core consensus engine, application layer, and post-quantum cryptographic stack are fully functional, audited, and production-hardened:

* DAG-based BFT consensus with deterministic 3-round commit finality
* Stake-weighted deterministic-RNG leader election (1 leader/round)
* `CRYSTALS-Dilithium2` signatures across validators, wallets, P2P envelopes, and identity claims
* `BLAKE2b-256` hashing standardized across all consensus, storage, and identity layers
* Native `$POLA` transfers with nonce-based replay protection
* Native Attached Assets (NAA): minting, transfer, and ownership tracking
* Hybrid storage architecture: LMDB hot state (balances, nonces, faucet) with atomic batch writes, staging layer, crash recovery, and idempotent migration from RocksDB; RocksDB cold/historical storage with column-family isolation
* Encryption-at-rest for all persistent stores via single operator passphrase, Argon2id key derivation, and per-store salt sidecars
* Block Explorer REST API with per-IP rate limiting, public-bind TLS enforcement, and loopback exemption
* P2P networking with LZ4 compression, protocol versioning (v7), Dilithium2 message authentication, persistent equivocation bans, and per-connection replay tracking
* PQXDH post-quantum transport encryption (X25519 + ML-KEM-768 + Dilithium2 1-RTT handshake) enabled by default
* Validated TCP transaction-submit protocol with versioned handshake and in-band backpressure
* Flexible key custody: plaintext, encrypted file (OS keyring), environment variable (KMS integration)
* Quantum resistance audit completed: all classical asymmetric cryptography purged
* Production readiness hardening finalized across multiple stress-test phases


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