side chain spec

[mixmix]

Questions:

1. Is this being redesigned?
   • where / when?
   • how does one participate?
2. why do the "side-chain" packets on have a packet_type code (T)?

Here's a design from some earlier spec... no idea if it matches implentations

  <--------------120B packet content---------->
          <------48B payload----->
  +----+-+------------------------+- . . . ---+
  | DMX|T| len | content1 | hptr1 | signature |   log entry
  +----+-+-----+----------+-------+- . . . ---+
                              |
     -------------------------' start of side chain (hash of blob 1)
    /
   v     100B                            20B
  +----------. . . . . . . . . .------+-------+
  | content2                          | hptr2 |   blob 1, identfied by hptr1
  +----------. . . . . . . . . .------+-------+
                                         |
                        - - -------------' continuation of side chain
     -------------- - - -
    /
   v     100B                            20B
  +----------. . . . . . . . . .------+-------+
  | contentN         |  padding       | 0---0 |  last blob N-1
  +----------. . . . . . . . . .------+-------+

[mixmix]

Future Idea: One thing that came up for me reading this was "gosh, I think having a byte at the start of each packet would help identify what it is a lot quicker. i.e.

CFT: the DMX should really stay at the start, this is probably not what we want to do
Mix: Should discuss in a different Issue

  <--------------120B packet content---------->
          <------48B payload----->
  +-+----+------------------------+- . . . ---+
  |T| DMX| len | content1 | hptr1 | signature |  
  +-+----+-----+----------+-------+- . . . ---+
                              |
     -------------------------' 
    /
   v      99B                            20B
  +-+--------. . . . . . . . . .------+-------+
  |T| content2                        | hptr2 |   
  +-+--------. . . . . . . . . .------+-------+

where e.g.
T = 0 : main chain, plain content
T = 1 : main chain, root of blob-chain (+ start of blob content)
T = 2 : blob chain, blob content

[mixmix]

Here's a reference from the python code: https://github.com/tinySSB/python-client/pull/2/files

[mixmix]

Mix: what if the start of some content collides with a DMX of some main chain
CFT: we have other ways of checking/ filtering, e.g. the hash if it's a chunk, or the sig if it's a main-chain