A smart contract-powered bridge that charges a toll fee to access additional features is known as a toll bridge. A toll fee is the key to releasing vested currency in the blockchain world.
The MetaMask extension must connect to a wallet on a whitelist in order to use the bridge. If the connection is successful, you can choose to withdraw money from the bridge. Notably, the bridge enables token purchasers to cancel their vesting obligations before they expire. They must, however, burn some of their tokens to lose some of them.