Announcing Etherlink 6.4: a security and liveness hardening for Farfadet

Project Updates
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This is a joint post from Nomadic Labs, TriliTech, and Functori.

A new Etherlink kernel upgrade proposal, Etherlink 6.4, has just been submitted to Etherlink’s Fast governance mechanism.

This is a security and liveness hardening upgrade, addressing different issues identified after the activation of Etherlink 6.3 during internal stress-testing and audit campaigns ahead of the first Tezos X kernel release.

Should the governance vote be successful, Etherlink 6.4 will activate on mainnet on Thursday, 11 June 2026.

We will publish a full post-mortem report once (and if) the new kernel upgrade is fully deployed.

:folded_hands: Thank you for your continued support for Etherlink.

:date: CTA: Please upvote Etherlink 6.4

The kernel upgrade proposal (00625d22abf10a520cae5489b7e19df70219a150d336ee6dc0a8eb4c21eca43c1b) has already been injected in the current proposal period.

  • Proposal period vote: fast governance period 401, spanning between L1 levels #13,565,089 (June 9 11:25 UTC) and #13,569,888 (June 9 19:25 UTC).

  • Promotion period vote: fast governance period 402, spanning between L1 levels #13,569,889 (June 9 19:25 UTC) and #13,574,688 (June 10 03:25 UTC).

:backhand_index_pointing_right: Remember that Etherlink fast governance periods last ~8 hours, which means bakers would need to vote up to two times within 12 hours to participate in both votes.

Bakers can cast their votes in a few clicks with Etherink’s governance explorer UI, or using TezGov. We provide further voting instructions to vote with Octez CLI below.

Don’t hesitate to reach out if you need our help to make sure you can cast your votes in time.

Annex: voting instructions

Bakers can cast their votes in a few clicks with Etherink’s governance explorer, or using TezGov. It is also possible to vote using Octez CLI, with the following commands:

Proposal Period (fast governance period 401)

The Proposal period vote is currently underway: it started on L1 level #13,565,089 (June 9 11:40 UTC) and will run until #13,569,888 (June 9 19:40 UTC).

You can upvote the Etherlink 6.4 kernel upgrade proposal using the following Octez CLI command:

octez-client call KT19oUVQPnVLuUBYXrBVd46WJnNAMpqkKSwo from <baking key or voting key> \
 --entrypoint "upvote_proposal" \
 --arg "0x00625d22abf10a520cae5489b7e19df70219a150d336ee6dc0a8eb4c21eca43c1b" --burn-cap 0.05

Promotion Period (fast governance period 402)

If the Proposal period is successful, the Promotion period would span between between L1 levels #13,569,889 (June 9 19:41 UTC) and #13,574,688 (June 10 03:41 UTC).

You can vote for the Etherlink 6.4 kernel upgrade proposal using the following Octez CLI command:

octez-client call KT19oUVQPnVLuUBYXrBVd46WJnNAMpqkKSwo from <baking_key or voting_key> \
  --entrypoint "vote" --arg '"yea"' \
  --burn-cap 0.05

See this documentation entry for further instructions on how to participate in Etherlink’s governance, and
Don’t hesitate to reach out if you need our assistance to cast your votes.

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