10% of Singularity's total supply will be locked in Dexpanse's burner. A burn event will happen every quarter, where a fraction of that amount will be forever burned. The exact amount burned will depend on the current Singularity price.
Each time somebody uses SGY to pay a discounted price for any of Dexpanse's services, half of all the SGY tokens received as payment will automatically be burned. For more information, read about paying with SGY here.