Good morning Hossein,

This is already known.
Indeed, this is the basis of Burchert-Decker-Wattenhofer "Channel Factories".

See also discussion regarding Fulgurite.

It is likely that channel factories of some form will be created after we can 
get Decker-Russell-Osuntokun ("eltoo") online.
Decker-Russell-Osuntokun requires some kind of `SIGHASH_NOINPUT`.

In many ways, a channel is simply a type of cryptocurrency system.
If we were to generate some kind of hierarchical system of types:

* Cryptocurrency System (abstract)
  * Blockchain (abstract)
    * Bitcoin (concrete) - the only blockchain that can ever exist
  * Offchain cryptocurrency system (abstract) - requires an existing 
Cryptocurrency System to construct
    * Poon-Dryja (concrete) - current Lightning Network; 2-party only
    * Decker-Wattenhofer (concrete) - multiparty but requires long locktimes on 
    * Decker-Russell-Osuntokun (concrete) - multiparty, requires short 
locktimes on unilateral

Burchert-Decker-Wattenhofer factories are just the realization that you can do 
something like instantiate a Poon-Dryja channel inside a Decker-Wattenhofer 
channel inside a Bitcoin blockchain.

Similarly, your NOctaHub is just another offchain cryptocurrency system, and 
the realization that you can nest other offchain cryptocurrency systems inside 
it is simply the same realization that Burchert-Decker-Wattenhofer had.

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