tempoxyz/tempo zones/v0.4.0

Zones v0.4.0

on GitHub

Zones v0.4.0 adds support for the T13 network upgrade, which brings the Zones prover to Tempo. Zone sequencers should upgrade before T13 activates on their network.

This is also the first Zones release from tempoxyz/tempo, which is now the monorepo for Tempo, Zones and the prover. The old tempoxyz/zones repository is archived, and future Zones releases will be published here under zones/vX.Y.Z tags.

Update Priority

What's new

T13 support

• The T13 prover works out of the box. This release has the measurements (PCRs) for Prover v0.4.0 built in. A sequencer trusts that prover for T13 without any extra setup. (#8608, #8597)
• You no longer need to pass an attestation policy. Setting --sequencer.prover-address is enough. The sequencer checks each prover against the built-in measurements for its hardfork. If a hardfork you assigned a prover to has no measurements, the node won't start. You can still use --sequencer.prover-attestation-policy to override them. (#8391)

More reliable block production

• Slow or failing proofs no longer stall the zone. If collecting a block's witness fails or takes more than 500 ms, the zone keeps producing blocks without it, and the batch settles without a proof. A slow shadow prover also can't hold up the zone's L1 sync anymore. (#8681)
• No more endless retries for missing witnesses. If the L1 can't serve a block's proof data, the node tries once and moves on instead of retrying forever. (#8724)
• The solvency checker keeps running after brief storage errors. It used to switch off until the node restarted. Now it retries. (#8609)

Under the hood

• Images build the same way even on builders whose clocks are off. (#8600, #8603)
• The prover now has its own versions and releases, starting at v0.4.0. (#8591, #8607)
• Updated reth, and patched a dependency for RUSTSEC-2026-0385. (#8614, #8617)