What is a blockchain bridge?
A bridge helps move assets or information between blockchains, with risks that depend on how the connection works.
Version 1
GlossaryA bridge connects blockchain ecosystems so assets or information can be used across them.
Imagine you have funds on one blockchain, but an app you want to use works on another. A bridge can arrange the transfer. This is a hypothetical example, not a recommendation of a route.
A little more technical
Different designs use different mechanisms. Some hold assets on one side and issue a representation on the other. The original coin does not necessarily travel intact between two systems.
Common misunderstanding
“Bridged” does not mean risk-free. Software bugs, operator powers and the security of the connected networks can affect your funds. A comparison app can make routes easier to choose without removing these risks.
No prerequisite reading is needed. Definition source: Ethereum’s bridge guide.