It depends. Generally, you wouldn’t need to report anything unless it was income – either a capital gain/loss (because of a sale or trade), or because you received an amount of cryptocurrency as a payment (interest, salary, sales income, etc…). However, if you have a cryptocurrency business, in some cases you would report your cryptocurrency like it was inventory. Your purchases would be reported as part of your Cost Of Goods Sold.
The CRA has a guide to the tax treatment of cryptocurrencies here: https://www.canada.ca/en/revenue-agency/programs/about-canada-revenue-agency-cra/compliance/digital-...
