Expand description
Address derivation (v0.32).
v0.32 replaces the v0.14-era hand-rolled 5-shape allow-list with an
AST → miniscript::Descriptor converter
(crate::to_miniscript::to_miniscript_descriptor) and delegates
address rendering to rust-miniscript. Any BIP-388-parseable shape
derives — multi-leaf tap-trees, tr(NUMS, ...), sh(multi), arbitrary
wsh(<miniscript>), and any tap-leaf miniscript fragment included.
Feature-gated: requires derive (default-on). Pure-codec consumers can
opt out via default-features = false.
§What this module does NOT do
- Origin path is not consulted. Origin is the path to the xpub from the master seed; address derivation starts at the xpub. The recorded origin matters for signing flows (PSBT key-source metadata), not for getting an address.
- Master fingerprint (
FingerprintsTLV) is unused for the same reason — it identifies the master, not the derivation root. - Hardened use-site components are rejected. Hardened public derivation is forbidden by BIP 32; an xpub-only restore cannot produce addresses for a wallet whose use-site path has a hardened alternative or hardened wildcard.