TON Validators Prepare for Aug. 20 Collator Activation

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TON Core said its “TON 2026.08” network update will switch on the collator architecture on mainnet on Aug. 17, 2026, moving block assembly to dedicated collator nodes while validators handle only verification. TON Status told validators to run specific commits — mytonctrl 7e90e26 and node 140320b — and be ready to vote at 08:00 UTC on Aug. 21 on configuration switches tied to execution and queueing.

Collators take over block assembly on TON mainnet

The handover changes where blocks are built, not who finalizes them. TON Core framed it as an efficiency shift drawn from its Accelerator work and adapted for Sub‑Second mode. By taking assembly off validators, the network targets lower latency during production. TON Core said in‑memory collators are expected to raise the maximum TPS on a single shardchain. The design separates assembly and verification to push throughput while keeping validator duties focused. The immediate effect on user‑seen speed depends on configuration toggles that follow the switch.

TON Core tied the handover to Sub‑Second mode and flagged throughput gains from in‑memory collators.

Validator checklist: required commits and vote window

For validators, the bottleneck is readiness — specific commits and a narrow vote window set by TON Status.

  • Update mytonctrl to commit 7e90e26.
  • Update node software to commit 140320b.
  • Track the scheduled network update on Aug. 12, 2026.
  • Be ready to vote on Aug. 21, 2026 at 08:00 UTC on dispatch queue activation, transaction executor behavior changes and an increased minimal split.

Those switches cover queuing, execution and shard split thresholds.

Staged rollout through August

The code path landed weeks earlier. The project tagged v2026.07 on Aug. 3 with QUIC broadcast improvements, new QUIC metrics and stability fixes. Infrastructure providers reported mainnet deployment around Aug. 4, tying the build to early‑August maintenance windows. Status pages through the month — including QuickNode — referenced collator‑related protocol fixes such as PeerId handling in node and tooling. The plumbing moved first so that the collator switch could be isolated to a configuration‑gated handover.

What still hinges on configuration

Activation alone does not pick execution rules or queue behavior; TON Status says validators will vote on dispatch queue activation, transaction executor behavior changes and a higher minimal split after the handover. Validators are asked to vote at 08:00 UTC on Aug. 21, 2026.

Disclaimer: This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.

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