BDK-Kyoto is an extension of Kyoto, a client-side implementation of BIP157/BIP158. These proposals define a way for users to fetch transactions privately, using compact block filters. You may want to read the specification here. Kyoto runs as a psuedo-node, sending messages over the Bitcoin peer-to-peer layer, finding new peers to connect to, and managing a light-weight database of Bitcoin block headers. As such, developing a wallet application using this crate is distinct from a typical client/server relationship. Esplora and Electrum offer proactive APIs, in that the servers will respond to events as they are requested.
In the case of running a node as a background process, the developer experience is far more reactive, in that the node may emit any number of events, and the application may respond to them. BDK-Kyoto curates these events into structures that are easily handled by BDK APIs, making integration of compact block filters easily understood.
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)
at your option.