{"podcast":{"title":"Citadel Dispatch","slug":"citadel-dispatch-1365851","podcast_index_feed_id":1365851,"rss_url":"https://serve.podhome.fm/rss/c90e609a-df1e-596a-bd5e-57bcc8aad6cc","website_url":"https://serve.podhome.fm/CitadelDispatch","image_url":"https://assets.podhome.fm/8029725b-0319-44b9-4793-08dc404e83a4/638475670208679180CITADELDISPATCH.jpeg","author":"ODELL","episode_count":252,"summary":"Actionable bitcoin and freedom tech discussion. Funded by our audience. No ads or sponsors.","last_synced_at":"2026-07-29T08:20:03.176625+00:00","page_url":"https://stenobird.com/podcast/citadel-dispatch-1365851"},"episode":{"title":"CD199: CRAIG RAW - SILENT PAYMENTS AND SPARROW WALLET","slug":"cd199-craig-raw-silent-payments-and-sparrow-wallet","published_at":"2026-04-13T20:28:48+00:00","page_url":"https://stenobird.com/podcast/citadel-dispatch-1365851/cd199-craig-raw-silent-payments-and-sparrow-wallet","show_page_url":"https://stenobird.com/podcast/citadel-dispatch-1365851","url":"https://serve.podhome.fm/episodepage/CitadelDispatch/cd199-craig-raw--silent-payments-and-sparrow-wallet","audio_url":"https://serve.podhome.fm/episode/8029725b-0319-44b9-4793-08dc404e83a4/639117039524776887edd9ed0f-de75-4bb9-bf00-ef3835da6c73v1.mp3","summary":"Craig Raw, creator of Sparrow Wallet, joins to discuss silent payments, a new bitcoin address system that eliminates address reuse, removes the gap limit, and aligns privacy with convenience. Craig walks us through the history of bitcoin address derivation from single key to hd wallets to bip 47, then explains how silent payments optimizes everything except scanning cost and how his new server implementation, Frigate, uses gpu acceleration to mitigate that. We discuss the path to adoption including hardware wallet support, public server infrastructure, bip 353 human readable addresses, and the overall vision of upgrading from hd wallets to sp wallets. Craig on Nostr:  https://primal.net/craigraw Craig on X: https://x.com/craigraw Sparrow Wallet: https://sparrowwallet.com Frigate Repo: https://github.com/sparrowwallet/frigate EPISODE: 199 BLOCK: 944916 PRICE: 1384 sats per dollar (00:03:09) Craig Raw of Sparrow Wallet (00:03:27) Silent Payments: what they are and why they matter (00:06:01) From single keys to HD wallets: history and limits (00:11:41) Address reuse in the wild and UX realities (00:11:50) BIP47 review: pros, cons, and hardware wallet hurdles (00:15:18) Enter Silent Payments: design tradeoffs and hardware support (00:19:01) Key benefits: static codes, enforced freshness, no gap limit (00:21:02) The scanning-cost problem and early client approaches (00:25:27) Server-side strategy: database tweaks and GPUs (00:29:15) Why public servers matter and performance breakthroughs (00:33:37) Frigate with Electrum backends: deployment paths (00:37:20) Risks with public servers and practical mitigations (00:43:10) Uncle Jim model and GPU-ready home servers (00:46:21) GPU backends: CUDA, OpenCL, Metal and real-world nodes (00:47:34) Running everything on a laptop a…","meta_description":"Craig Raw, creator of Sparrow Wallet, joins to discuss silent payments, a new bitcoin address system that eliminates address reuse, removes the gap limit,…","key_points":[],"chapters":[],"topics":[],"duration_seconds":4300,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/citadel-dispatch-1365851/episodes/cd199-craig-raw-silent-payments-and-sparrow-wallet/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/citadel-dispatch-1365851/cd199-craig-raw-silent-payments-and-sparrow-wallet.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}