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pezkuwi-subxt/polkadot/roadmap/implementers-guide/src/node/backing
Bradley Olson f2bc0f57b6 Removing Outdated References to Misbehavior Arbitration Subsystem (#6814)
* Provisioner guide entry update

* Removing mentions of misbehavior arbitration sub

* fmt
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Backing Subsystems

The backing subsystems, when conceived as a black box, receive an arbitrary quantity of parablock candidates and associated proofs of validity from arbitrary untrusted collators. From these, they produce a bounded quantity of backable candidates which relay chain block authors may choose to include in a subsequent block.

In broad strokes, the flow operates like this:

  • Candidate Selection winnows the field of parablock candidates, selecting up to one of them to second.
  • Candidate Backing ensures that a seconding candidate is valid, then generates the appropriate Statement. It also keeps track of which candidates have received the backing of a quorum of other validators.
  • Statement Distribution is the networking component which ensures that all validators receive each others' statements.
  • PoV Distribution is the networking component which ensures that validators considering a candidate can get the appropriate PoV.