Burn Mechanism
DeFiA burn mechanism is a process built into a cryptocurrency or token system that permanently removes tokens from circulation.
A burn mechanism is a process built into a cryptocurrency or token system that permanently removes tokens from circulation. When tokens are “burned,” they are sent to a wallet address that nobody controls and from which nothing can ever be retrieved — essentially destroying them forever. This intentionally reduces the total supply over time. If demand for the token stays the same or grows while supply shrinks, basic economics suggests the price should rise, which is why burn mechanisms are often seen as a positive signal for holders.
Burn mechanisms are implemented in different ways. Some projects burn a small percentage of every transaction fee automatically, so every time the network is used, a tiny amount of the token disappears. Others schedule periodic burns where the project team buys tokens off the market and destroys them. Some tie burns to specific events, like burning tokens when users purchase premium features. Ethereum introduced a burn mechanism in its “London” upgrade in 2021, which now destroys a portion of the fee paid for every transaction on the network.
Not all burns are equal in their impact, however. A burn is most meaningful when the amount being destroyed is significant relative to the total supply, and when it is driven by actual usage of the network rather than artificial buybacks. Critics point out that some projects use hyped-up burn announcements as marketing tactics without meaningfully reducing supply in practice.
Example: Imagine a limited-edition trading card game that starts with 10 million cards in circulation. The game designers announce that every time a player uses a certain powerful card in a tournament, that card is destroyed and cannot be used again. Over time, those cards become increasingly rare — and therefore more valuable to collectors — because there are fewer of them in existence. Token burning works on the same principle.