> For the complete documentation index, see [llms.txt](https://solful.gitbook.io/solful-network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://solful.gitbook.io/solful-network/solful-project/whitepaper-v-2.0/deflationary-system.md).

# Deflationary system

Projects and DAOs that will acquire non-reversible services (one-time deal) through NFT purchase will have to agree to NFT purchase and burn which will act as a non-verbal contract, sales confirmation, and proof, meaning Creature or Divinity NFTs must be purchased and burned so they  no longer transferable, sellable or tradeable, this will lead to a slow deflation of the current creature collection circulation that has a supply of 4444 Creatures and 444 Divinity