Q3 OpenSATs Update

# Q3 OpenSATs Update ## How did you spend your time? ### BDK 1.0 * Completed bdk `1.0.0-alpha.2` release with all the improvments below. * [@evanlinjin] implemented an innovative new [bitcoind RPC based blockchain client module](https://github.com/bitcoindevkit/bdk/pull/1041) that updates the chain and wallet state block by block. This enables quick syncing to bitcoind, even for wallets tracking many addresses. * [@evanlinjin] merged a major change to [Implement linked-list LocalChain](https://github.com/bitcoindevkit/bdk/pull/1034). This change enables more efficent and thread safe block data storage. * [@vladimirfomene] did some required refactoring to the chain update structures to improve usability. * [@danielabrozzoni] performed our long overdue upgrade to the latest `rust-bitcoin` 0.30 version which is a big win for interoperating with other `rust-bitcoin` base projects. * [@danielabrozzoni]'s `rust-miniscript` planning module [PR](rust-bitcoin/rust-miniscript#592) was merged :tada:. This work lays the foundation for future improvements to the bdk transaction builder. * [@notmandatory] removed the `TransactionDetails` type from the Wallet API and replaced it with new functions to provide the same info via new functions. * [@evanlinjin] added a new cli example for the esplora blockchain client showing off new chain syncing features. * [@LagginTimes] and [@danielabrozzoni] implemented a new and improved set of tests to prevent conflicting transactions in the `TxGraph` struture. ### BDK Maintenance * bdk version [0.29.0](https://github.com/bitcoindevkit/bdk/releases/tag/v0.29.0) was released which fixes a bug in the wallet balance if the wallet receives more than one coinbase transaction and updates the rust-bitcoin dependency to the latest 0.30 version. ### BDK Language Bindings * released bdk-cli version [0.30.0](https://github.com/bitcoindevkit/bdk-ffi/releases/tag/v0.30.0) of bdk-android, BitcoinDevKit (Swift library), bdkpython, bdk-rn, and bdk-flutter with support for new BIP-86 (Taproot) descriptor templates (plus a bunch of internal improvements). * [@thunderbiscuit] added the [uniffi examples website](https://thunderbiscuit.github.io/uniffi-examples/getting-started/introduction.html) and [Rust language bindings template](https://github.com/thunderbiscuit/uniffi-bindings-template) repo to help other Rust-based bitcoin projects leverage language bindings. * [@reez] created the new [Swift iOS Demo Wallet] project to help jumpstart new BDK iOS wallet projects and demonstrate best practices. See also [@reez]'s blog post ["Developing a Bitcoin Wallet for iOS"](https://matthewramsden.substack.com/p/developing-a-bitcoin-wallet-for-ios). ### Summer of Bitcoin We wrapped up three [SoB](https://www.summerofbitcoin.org/) projects to: * Add new screens and multilanguage support to new [Swift iOS Demo Wallet], [@reez] and [@notmandatory] mentored [@Ytemiloluwa](https://github.com/Ytemiloluwa) from Ahmadu Bello University (Nigeria). * Add [Payjoin support to bdk-cli](https://github.com/bitcoindevkit/bdk-cli/pull/156), [@DanGould](https://github.com/DanGould) and [@notmandatory] mentored [@willowenss](https://github.com/willowenss) from Vanderbilt University (Nashville). * Add advanced bitcoin features to [Padawan Wallet](https://padawanwallet.com/), [@thunderbiscuit] mentored [Prakhar](https://github.com/Prakhar-Agarwal-byte) at the Indian Institute of Technology (Banaras Hindu University, Varanasi). ### BDK Talks and Workshops * [@evanlinjin] had a chat about BDK on the [億聰哲史 podcast](https://open.spotify.com/episode/3IMsSOPG6ngHiLDOsWA8Yl?si=kushf4q0SiqpRhjQrdPLRw), let us know how his chinese is, helped run some workshops and socratic seminars for [BitDevs in Taipei](https://www.meetup.com/taiwan-bitdevs/events/295581262), and gave a talk and workshop at the first [Bitcoin Thailand conference](https://twitter.com/evanlinjin/status/1681317323477770241). * [@danielabrozzoni] taught a few lessons on Bitcoin and BDK for the cubo+ mentoring program and gave a talk at hack.bs.it on Rust. * [@notmandatory] gave a [workshop](https://github.com/TABConf/2023.tabconf.com/issues/113) at [TABConf2023](https://2023.tabconf.com/) for how to use the new BDK 1.0 syncing mechanisms. * [@danielabrozzoni] was on the ["Il priorato del Bitcoin" podcast](https://open.spotify.com/episode/3ciY2ChgvgfiJCbWsF02yf?si=TWA6mPp8RWe1WMTAWTRa9g) for an episode on Bitcoin technical news (BIP324, covenants, drivechains, Ark, etc) ### BDK Foundation * Created [BDK case studies page](https://bitcoindevkit.org/case-studies/) with a growing list of projects that use the Bitcoin Dev Kit. * Opened our fiat bank account, for receiving donations and paying bills. * Setup our on-chain multisig vault for bitcoin donations and payment. ## How did you make use of the money? As we're still setting up our grant program so money has not been deployed yet, but it will be used for developer grants. ## What do you plan to work on next quarter? ### BDK 1.0 * Complete BDK 1.0.0-Beta.0 Rust release which will have stable Wallet APIs. This release will be used for building mobile language bindings and getting feed-back from Rust based projects. * Update Rust examples, docs to BDK 1.0.0 APIs. * Add additional test coverage and do performance testing for Beta.0 code. * Update build environment to use NIX for better local and CI testing. ### BDK Language Bindings * Complete BDK-FFI 1.0.0-Beta.0 bindings based on Rust BDK 1.0.0-Beta.0 release. * Update example BDK example Android and iOS mobile wallets to use BDK-FFI 1.0.0-Beta.0 library. * Begin work on "Book of BDK" user guide for building BDK based wallet apps. ### BDK Foundation * Setup grants committee, document policies for new grant program. * Document officers and board roles and responsibilities. * Publish Foundation web page with mission statement, board info. * Publish updated Supporters web page with info on existing and new supporters. * Publish BDK 2024 roadmap blog post. [@LagginTimes]: https://github.com/LagginTimes [@vladimirfomene]: https://github.com/vladimirfomene [@evanlinjin]: https://github.com/evanlinjin [@danielabrozzoni]: https://github.com/danielabrozzoni [@reez]: https://github.com/reez [@notmandatory]: https://github.com/notmandatory [@thunderbiscuit]: https://github.com/thunderbiscuit [Swift iOS Demo Wallet]: https://github.com/reez/BDKSwiftExampleWallet