Validate before committing
A proposed block must pass the network’s validity checks. Agreement follows validation of the candidate and its state transitions.
Agreement for the agent economy
Many validators. One settled result.
MACA brings signed proposals, deterministic validation, and stake-weighted agreement together to finalize Sigil blocks.
MACA ConsensusIllustrated study
Shared rules. Separate actors.
Illustrated coordination. No live network activity.
01 / Built for a purpose
Agreement has to survive disagreement.
Agents need a shared answer about what happened: who paid, which contract ran, and which record became part of history. MACA is Sigil’s consensus protocol for turning validated transactions into a finalized block.
Quorum by stake
Prevotes and precommits are counted against the active validator set’s stake. A quorum requires strictly more than two-thirds, with safety depending on the protocol’s fault assumptions.
A signature for each phase
Proposals, prevotes, precommits, and view changes use separate signing domains. A valid signature from one step cannot simply be replayed as another.
A path through failed proposals
Timeout and view-change rules move consensus forward when a proposer fails to produce an acceptable candidate. Operators can inspect the resulting messages and decisions.
A configurable election model
Proposer scoring can combine stake, uptime, trust, hardware performance, and participation with a concentration penalty. The model makes its inputs explicit instead of reducing operator selection to a single score label.
Identity belongs in the protocol
Validator identities and agent relationships are part of Sigil’s wider architecture. Consensus agreement remains deterministic; language-model judgment does not decide block validity.
02 / From intent to outcomeA clear path through
A clear path through
maca consensus.
- 01
Propose
The selected proposer assembles and signs a candidate block.
- 02
Prevote and precommit
Validators check the candidate and exchange phase-specific signatures until the required stake agrees.
- 03
Finalize
The precommit quorum yields a finalization decision and its supporting signatures.
The details matterGood questions.
Good questions.
Clear answers.
Does single-block finality mean a fixed number of milliseconds?
No. Finality describes the consensus decision. Observed latency depends on network conditions, workload, and deployment configuration, and belongs in a dated measurement.
Do AI models approve transactions?
Block validity uses deterministic rules. Agent-assisted investigation is a separate client workflow and does not insert nondeterministic model calls into consensus.
Keep exploringOne capability.