To take you back to what I responded, albeit very briefly, in terms of who bears responsibility for ensuring that this is in fact happening, I would note there is a self-certification process involved for indigenous suppliers. They have to retain information that would support self-certification, but it's Indigenous Services Canada that has the right to audit the statements being certified by indigenous businesses to ensure that it is in fact indigenous businesses benefiting as intended under the procurement strategy for indigenous business.
On February 27th, 2024. See this statement in context.