Processor
Processors are permission-less and trust-less. This means that anyone can operate a Processor for channels they are interested in.
The processor proves the validity of pending messages and sends them to end recipients.
It is an off-chain actor that does the following:
Observe the home
Maintain local merkle tree with all leaves
Observe 1 or more replicas
Maintain list of messages corresponding to each leaf
Generate and submit merkle proofs for pending (unproven) messages
Dispatch proven messages to end recipients
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