What are blockchain bridges?
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Blockchain bridges are tools that enable the transfer of assets and data between blockchains. Blockchains are typically designed to operate as discrete systems where validators are responsible for securing it and ensuring consensus on that chain alone. Bridges are software protocols that allow these systems to communicate with each other and to connect two otherwise unconnected blockchain platforms.
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Most bridges operate using some variation of a mint-and-burn mechanism. When a token or other asset leaves the originating blockchain, it is either frozen or burned on exit, and a corresponding token is created on the destination chain. Similarly, when the asset returns to the originating blockchain, the duplicate token is burned on the destination chain. On the originating chain, the asset is either unfrozen or re-created, helping maintain the correct token supply.
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