# Bitcoin Park Open House #0, Some Dev Topics #### Bitcoin * [Proposed Multipath Descriptor Key Expressions](https://github.com/achow101/bips/blob/bip-multipath-descs/bip-multipath-descs.mediawiki) by Andrew Chow * [BIP 0032](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki) HD Wallets * [BIP 0084](https://github.com/achow101/bips/blob/bip-multipath-descs/bip-0084.mediawiki) P2WPKH HD Key Paths * [Bitcoin Descriptors](https://bitcoindevkit.org/descriptors/) * [Bech32/Bech32m adoption](https://en.bitcoin.it/wiki/Bech32_adoption) * ["Fuzz Your Mother If You Want Fuzz"](https://afilini.com/blog/fuzz-your-mother-if-you-want-fuzz/) by Alekos Filini * [Coin Select](https://bitcoinops.org/en/topics/coin-selection/) topic from Bitcoin Optech * [Rust Testing with Bitcoind crate](https://github.com/RCasatta/bitcoind) by Riccardo Casatta * [Rust Bitcoin](https://github.com/rust-bitcoin) #### Lightning * [Static channel backups](https://bitcoinops.org/en/topics/static-channel-backups/) * [LDK: Onion Messages v1](https://github.com/lightningdevkit/rust-lightning/pull/1503) * [BOLT 7: Onion message support](https://github.com/lightning/bolts/pull/759) * [BOLT 12: Flexible Protocol for Lightning Payments](https://github.com/rustyrussell/lightning-rfc/blob/guilt/offers/12-offer-encoding.md) * [Peer Swap](https://www.peerswap.dev/) * [Core Lightning Plugin](https://github.com/ElementsProject/peerswap) (also works with LND) * [Acinq WIP issue](https://github.com/ACINQ/eclair/pull/2342) #### Other * [Summer of Bitcoin](https://www.summerofbitcoin.org/) * [Stephan Livera Podcast 406](https://stephanlivera.com/episode/406/) * [FediMint](https://fedimint.org/docs/intro) and [Fedi](https://www.fedi.xyz/) * [Bitcoin Fundaments Podcast](https://www.theinvestorspodcast.com/bitcoin-fundamentals/bitcoin-fedimint-obi-nwosu/)