Bonding Curve

A bonding curve is a pricing rule built directly into a smart contract that determines the price of a token based on its current supply. As more people buy the token and the supply increases, the price automatically rises along the curve. When people sell the token back, the supply decreases and the price falls. The “curve” in the name refers to the shape of the price-supply graph — it is literally a mathematical curve that the token price follows.

The key insight behind a bonding curve is that every buy and sell happens with the smart contract itself, not with another person. You send currency in, the contract mints new tokens for you; you send tokens back, the contract burns them and returns currency to you. The price you receive is always calculated by the formula, making the system fully transparent and automatic. Early buyers benefit because they lock in a low price before others drive the supply up; later buyers pay more but also help establish liquidity.

Bonding curves are used for token launches, decentralized autonomous organization (DAO) governance tokens, and experimental economic models. They remove the need for a traditional initial coin offering (ICO) managed by a company, because the curve itself is the market. Projects can raise funds continuously and provide liquidity from the very first purchase.

Example: Think of a new band releasing limited-edition vinyl records. The first 100 records cost $10 each, the next 100 cost $15, then $20, and so on. The price schedule is printed right on the order form and never changes. If you buy early and sell back later when demand is high, you profit. The price is set by the rule, not by a manager.