OptionalmaxHops?: numberOptionalpowLimitBits?: number | nullProof-of-work floor for every hop header, in checkPowLimit's
convention: undefined is the mainnet limit and null disables it.
The caller's verification applies the same floor, so passing it here is
what lets a header under it cost one attempt instead of the whole walk.
OptionalwitnessBackends?: AnchorBackend[]OptionalwitnessSection?: WitnessSectionMode
Build a custody bundle for an inscription by walking confirmed outspends from its reveal. The result is UNVERIFIED; callers must run
verifyCustodyBundle(fetchCustody does both).