Per CRA Income Tax Folio S3-F9-C1 lineage, gambling winnings are tax-free for non-professional players. The professional player threshold considers frequency, system, intent, and reliance on gambling as livelihood - rarely triggered by recreational players.
However, if you convert crypto winnings to CAD on a Canadian exchange, any capital gain on the crypto between deposit and withdrawal IS taxable at capital-gains rates (50% inclusion rate per current legislation, pending the deferred increase). The gambling event itself is not taxable; the crypto conversion event is.
We are not tax advisors - this references CRA's published position. Verify currency.