BDK packages the Bitcoin SV (BSV) script and transaction-validation engine into a stand-alone C++ library (bdk_core) plus language bindings, so applications can validate Bitcoin SV transactions with behaviour matching the node — without building the whole node. It is assembled at build time from a curated subset of the bitcoin-sv sources and ships a Go (cgo) binding under module/gobdk.

The full documentation is an mkdocs site under documentation/docs/:

• About / getting started
• Directory structure
• Development build — prerequisites, pinned dependency versions, and build/test commands
• Architecture overview
• VerifyScript — consensus vs. policy validation paths
• Versioning
• Object model

Please refer to the build documentation for prerequisites and the authoritative, CI-pinned dependency versions before building.