mvarcs: Python Mark Verifying Authority Root Certificates

mvarcs provides a collection of Root Certificates for validating the trustworthiness of Mark Certificates such as Verified Mark Certificates (VMC) and Common Mark Certificates (CMC) used in BIMI (Brand Indicators for Message Identification).

Current status: Beta
Still testing and proving implementation.

Installation

mvarcs is available on PyPI. Simply install it with pip:

python -m pip install mvarcs

Usage

To reference the installed certificate authority (CA) bundle, you can use the built-in function

import mvarcs
mvarcs.where()
# '/usr/local/lib/python3.13/site-packages/mvarcs/mvarcs/cacerts.pem'

Additionally, you can get the contents directly

import mvarcs
mvarcs.contents()
# Issuer: ...
# ...
# -----END CERTIFICATE-----

Or from the command line

python -m mvarcs
# /usr/local/lib/python3.13/site-packages/mvarcs/mvarcs/cacert.pem

python -m mvarcs -c
# Issuer: ...
# ...
# -----END CERTIFICATE-----

Addition/Removal of Certificates

See https://github.com/markcerts/mvarcs