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Bleep, BitTorrent Inc's p2p messaging client, already does a lot of this. It uses the bittorrent DHT for fast peer discovery and does device pairing via QR code

Bleep, BitTorrent Inc's p2p messaging client, already does a lot of this. It uses the bittorrent DHT for fast peer discovery and does device pairing via QR codes, including p2p state synchronization. We do use a central server for identity lookup based on email/phone number, because squaring Zooko's triangle seemed a bit too ambitious. We also use relay servers to get around NAT so uPnP is typically needed for true p2p operation, but the client still functions just fine without it. The client itself is closed source, but we have open sourced a key portion of the code which deals with the DHT. https://github.com/bittorrent/scout https://github.com/bittorrent/scout

seanp2k2 9y ago
The bleep app description says "Bleep is a fun and easy instant messaging app that is completely private." I find it hard to believe that without audited available source code. A quick search turned up this thread: https://forum.bittorrent.com/topic/30924-open-source/ https://forum.bittorrent.com/topic/30924-open-source/ which seems to indicate that back in 2014, it was unclear if it was going to be open source, and it was thought to be a Skype competitor. The current state of affairs seems to be text and images only, marketing it similar to Snapchat with disappearing messages and claims of privacy (but similarly no way to verify this), and it's the second hit in the iOS App Store for "bleep", having less reviews (at 8) than the top hit, "Bleep!", which is a big red button which presumably makes noise when tapped.