Citadel Dispatch

Author: ODELL

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CD209: MATTHEW VUK - BARK - BITCOIN PAYMENTS ON ARK
Monday, 20 July, 2026

Matthew Vuk joins to discuss Bark, Second’s Bitcoin-only implementation of the Ark protocol. We get into how Ark wallets enable Lightning, on-chain, and instant Ark payments without managing channels or liquidity, plus VTXOs, delegated refreshes, unilateral exits, cloud backups, fees, privacy, and denial-of-service protections. Then we discuss running Ark servers, using Bark to power Cashu mints and African mobile-money gateways, proof of reserves, comparisons with Spark and Arkade, and Second’s mission to build open-source Bitcoin payment infrastructure.Second: https://second.techBuilt with Bark: https://second.tech/docs/built-with-barkMatthew on X: https://x.com/matthewvuk2Second on Nostr: https://primal.net/second EPISODE: 209BLOCK: 958911PRICE: 1529 sats per dollarmore info on the show: https://citadeldispatch.comlearn more about me: https://odell.xyzmonitor the situation: https://citadelwire.comten31: https://ten31.xyzopensats: https://opensats.org