# Standards, references and rights

- RFC 4506, XDR: https://www.rfc-editor.org/rfc/rfc4506
- RFC 5531, ONC RPC version 2, including AUTH_SYS and record marking:
  https://www.rfc-editor.org/rfc/rfc5531
- CPython 3.12 `Lib/xdrlib.py` (PSF license):
  https://github.com/python/cpython/blob/3.12/Lib/xdrlib.py
  Read as a mature implementation reference and used privately as a differential
  oracle for 64 scalar vectors. Reference file SHA-256:
  `983c5e8e3090bdbeb94bf4faf841c1f8c916bcbca423863f6870a142d16a4fb8`.
- davecgh/go-xdr (ISC): https://github.com/davecgh/go-xdr
  README, encoding tests and license inspected as another mature behavioral reference.
- MoonBit core (Apache-2.0): https://github.com/moonbitlang/core
  Runtime dependency supplies JSON, collections and fundamental types.

MoonXDR is original MoonBit implementation code, not a translation or vendored copy
of CPython or go-xdr. Upstream source/tests/license texts are not bundled. Protocol
facts were implemented independently; standards prose was not copied. Deterministic
fixtures were newly calculated with Python stdlib `struct`, seed 45065531.
Their regeneration script is original MIT project code. No claim of upstream
endorsement or compatibility beyond the recorded tests is made.