Signal21Signal21

Team:Team:

• murdawkmedia – github.com/murdawkmedia

What We Built:What We Built:

The exploit at bitcoin++ isn't code — it's your calendar. The 40HPW meme exists because the Bitcoin rabbit hole is real: podcasts, YouTube channels, meetup streams, RSS feeds. Signal21 exploits that exploit back. Configure your sources and topics once, pay 21 sats, and get a single AI-synthesized audio briefing — deduplicated, filtered to what you actually care about, streaming to your browser before it's even done generating. Time is the only non-renewable resource. We built the reclaim button.

Stack:Stack:

• Backend: Python / FastAPI, async parallel feed fetching
• Transcription: yt-dlp + Gemini 2.5 Flash fallback (handles missing captions automatically)
• Script synthesis: Gemini 2.5 Flash via OpenRouter (reads thousands of lines, writes one broadcast-ready narrative)
• TTS: ElevenLabs streaming (zero-latency, audio starts before generation ends)
• Paywall: LNURL-pay via coinos.io — 21 sats to unlock a generation
• Frontend: Pure HTML/JS + Tailwind, cyberpunk aesthetic

Submission:Submission:

https://loot.fund/hackathons/bitcoin-exploits-edition/application/create/new

Repo:Repo:

https://github.com/murdawkmedia/signal21

Next Steps:Next Steps:

• Persistent user feeds (save your sources, not just one-shot)
• Nostr integration — zap the clips you liked back to the original creator
• Mobile PWA
• Looking for: beta testers willing to pay 21 sats and tell us what sucks

Hey everyone! Name's Murphy — I'll be at Bitcoin++ for the next few days running audio and video for the session recordings. If you notice a camera pointed at you, that's probably my fault, sorry in advance.

Always down to connect with people while I'm here. Also on the hunt for some live music one of the next couple evenings if anyone has local tips or is heading out — hit me up in the thread and we'll figure out the best way to connect.

Looking forward to the talks. See you all around.