# Relayer

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Relayers are **permission-less and trust-less**. This means that anyone can operate a Relayer for channels they are interested in.
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The relayer forwards updates from the home to one or more replicas.

**It is an off-chain actor that does the following:**

* Observe the home
* Observe 1 or more replicas
* Polls home for new signed updates (since replica's current root) and submits them to replica
* Polls replica for confirmable updates (that have passed their optimistic time window) and confirms if available (updating replica's current root)