⚡ Kaspa Music

Confirmed blocks on the Kaspa blockchain — the network produces 10-15 every second — become unique musical notes, played at a tempo you choose. Pitch, timbre, velocity, and stereo position are all derived deterministically from the block's hash bytes. The result is an infinite, unrepeatable generative composition driven entirely by real-world network activity.

How it works

The app connects to api.kaspa.org by REST polling: it discovers tip hashes once a second, fetches only as many of those blocks as it will actually play, and releases them in blue-score order at the chosen tempo. Each incoming block is passed through a signal interpreter that maps hash bytes to musical parameters. An AudioContext synthesizes the note in real time — no pre-recorded samples are required, though users can load their own WAV or MP3 files.

Over time, the distribution of notes reveals an emergent musical key. The app auto-detects this key and displays it in the HUD. DAG orphan events trigger drum fills; blue score milestones trigger scale transitions.

Music modes

Switch freely between five modes — the blockchain feeds the same raw data, the interpretation changes:

Scales

12 scales including Pentatonic, Dorian, Blues, Lydian, Maqam Rast, Hirajoshi, and Klezmer. Auto mode lets each music mode choose its default; Override locks all modes to a single scale.

Visuals

Features

• Session archive — save and replay up to 10 sessions
• Achievement badges — 20 milestones to unlock
• Keyboard jam mode — play live notes over the blockchain beat (keys 1–8)
• Daily challenges — unique goal each day
• Custom instrument samples — drag-drop any WAV or MP3
• Video recording — captures canvas + audio as WebM (up to 60s)
• Share links — encoded URL with key and session context
• 5 visual themes
• English and Hebrew (RTL) UI
• Ambient mode — full-screen no-UI via ?ambient=1
• Embeddable radio widget — /widget.html
• PWA — installable, offline-capable

Technology

• Vanilla JavaScript — no framework
• Web Audio API for synthesis and analysis
• Canvas 2D for all visuals
• Service Worker with versioned caching
• localStorage for preferences and session data
• IndexedDB for optional custom instrument samples
• BroadcastChannel for multi-tab audio coordination

Data & privacy

All chain data comes from api.kaspa.org (public API, no auth required). All processing is client-side. Preferences, sessions, and custom samples stay in your browser; Privacy → Clear Stored Data removes LocalStorage keys and IndexedDB samples. No ads, no analytics backend.

Embed the live widget

Add a live Kaspa note pulse to any page:

<iframe src="https://block-party-mixer.vercel.app/widget.html"
  width="220" height="80"
  style="border:none;border-radius:8px;"
  title="Kaspa Music Live"></iframe>