Canada: How to dispose worthless crypto for capital loss?


I have a few currencies that have become 100% worthless over the past couple of years.
They sit in a completely illiquid market; i.e. there is zero demand and no buyers.

In cases like these, how can I trigger a capital loss to lower my realised gains?

Is it sufficient to burn the tokens by sending to an address I don’t own? (say, the Ethereum black-hole address) Or, could I send them all to a friend for a penny?

Advice appreciated.