This appears to be a variation of application of the 'We have six billion doillars of gold buried in our back garden but need $50k to hire the digger to recover it' type of scam:
My name is Felix, a former Chief Compliance officer at one of
Canada’s foremost Cryptocurrency exchange platforms. This is a
private and confidential message from me to you and I request
that it be treated as such.
I am contacting you in respect of an urgent matter (Deal)
regarding funds in excess of Nine Million US Dollars which
resulted from a liquidated BTC account belonging to a deceased
account holder. I will let you in on my plan and why I chose to
contact you in the first place after I have received your reply
and gaining your full confidence.
Many thanks and looking forward to your reply.