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+# Changelog — nu-p2p
+
+All notable changes to this project will be documented in this file.
+Format: [Keep a Changelog](https://keepachangelog.com/en/1.1.0/)
+
+---
+
+## [Unreleased]
+
+## [0.1.0] — 2026-04-24
+
+### Added
+- `src/behaviour.rs` — `NuBehaviour` compositing Gossipsub + Kademlia DHT +
+  Identify + Ping via `#[derive(NetworkBehaviour)]`
+- `src/messages.rs` — `NetworkMessage` enum: `BlockAnnounce`, `BlockRequest`,
+  `BlockResponse`, `TxGossip`, `PeerExchange`, `ValidatorHeartbeat`, `VoteAnnounce`
+- Gossip topics: `nu/blocks/1`, `nu/txs/1`, `nu/votes/1`, `nu/validators/1`
+- `src/node.rs` — `P2pNode` struct with `start()` stub; wired in Faz 1
+- libp2p 0.54 dependency with Gossipsub, Kademlia, Identify, Ping