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spec/consensus: canonical vs subjective commit

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Refs https://github.com/tendermint/tendermint/issues/2769
This commit is contained in:
Anton Kaliaev
2020-07-29 15:13:15 +04:00
parent 2bd673c8eb
commit 3a29521848
1 changed files with 10 additions and 0 deletions
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10
spec/consensus/consensus.md
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@@ -337,3 +337,13 @@ where two conflicting reorg-proposals are signed.
Assuming that the external coordination medium and protocol is robust,
it follows that forks are less of a concern than [censorship
attacks](#censorship-attacks).
### Canonical vs subjective commit
We distinguish between "canonical" and "subjective" commits. The latter is what
each validator sees locally when they decide to commit a block. The former is
what is included by the proposer of the next block in the `LastCommit` field of
the block. This is what makes it canonical and ensures everyone agrees on it,
even if its different from the first +2/3 votes they saw that caused them to
commit a block. Each block contains a canonical +2/3 commit for the previous
block.