Cardano’s CAP-12 Draft Remove the Leios Off Switch

The fifth draft of Cardano’s CAP-12 constitutional amendment remove one mechanism wey fit allow Cardano turn off Ouroboros Leios through protocol parameter change. Intersect report say the draft leave deactivation to the Dijkstra hard fork plan. On November 6, Kevin Hammond, chair of Intersect’s Technical Steering Committee, propose make dem restore the mechanism under four conditions. The committee go review him proposal on November 18.

How Protocol Parameter fit Switch Leios Off

CAP-12 go add Dijkstra new protocol parameters to the Cardano Constitution and set limits on how dem fit change am. One parameter, maxEndorserBlockTxsSize, dey cap the total size of transactions inside endorser block. Leios introduce these blocks as part of im design to increase Cardano transaction throughput.

Earlier draft for CAP-12 for allow Cardano deactivate Leios across the network by setting that parameter to zero. The fifth draft, wey dem publish October 30, require make Leios parameters get nonzero values. If dem adopt am as dem write am, that restriction go block the proposed method of deactivation through parameter change.

Wetın Hammond Want Make Dem Test Before Dem Restore the Switch

According to summary wey stake pool operator SIPO publish, Hammond want the Leios team confirm for writing say setting the parameter to zero go return nodes to behavior wey consistent with Ouroboros Praos. E still call make dem test both deactivation and reactivation for Cardano Preview and Preprod networks so that both transitions fit check well before the mechanism go enter mainnet.

The two other conditions na conformance tests across all node implementations and one change to the rules wey the Guardrails Script dey enforce. The tests go check whether implementations dey behave consistently when the parameter change. The guardrail change go allow proposal wey set the parameter to zero to pass the script checks.

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Wetın Still Open Before CAP-12 Vote

Intersect November 6 update report say about 30 values for CAP-12 still dey wait feedback from the Parameter Committee and say dem dey expect sixth draft. DijkstraNet don already dey run protocol version 12, while Intersect dey target cardano-node 11.3 as release candidate wey go combine the full Dijkstra feature set with Linear Leios.

Intersect don schedule public review of CAP-12 and other active amendments for November 12. For the November 18 review, the technical committee go consider whether to support restoring zero as the value wey go deactivate Leios, subject to the proposed tests and guardrail change.