What happened

Hydra merged PR #2807, adding a check that rejects a deposit when the transaction claiming its increment would breach layer-1 ledger limits. The source identifies maxValSize, stated as 5,000 bytes on mainnet, and maxTxSize as the relevant limits.

The prior path could allow a deposit to land on-chain and enter a signed snapshot even though the later increment transaction could not fit. In that case, the increment could fail forever, wedging further incremental commits and locking funds until deadline recovery.

Why it matters

For Hydra head builders, operators, and users committing funds incrementally, the change removes a documented self-wedging path. The supplied record gives deposits containing tokens under many distinct policy IDs as an example of how a value could become too large for the increment transaction.

The change also alters deposit-acceptance behavior. Builders and operators may want to test incremental-commit flows involving deposits across many policy IDs against the new rejection path.

What to watch next

The most useful next receipt would be confirmation that this merged change appears in a tagged Hydra release or is deployed for the relevant environment. The record supports neither point yet.

What to watch

Watch for a tagged Hydra release or deployment confirmation that includes the oversized-deposit guard.

Sources and limits

Upstream references and independent checks

Digest dated 2026-08-06 · upstream model claude-sonnet-4-6. Direct links are matched to all 2 upstream source IDs.

  1. 1
    Reject deposits too large to be claimed by an increment tx (#2807)Direct upstream source · 9597f913934446c1f901dda3cce3092536279eac
  2. 2
    Reject deposits too large to be claimed by an increment tx (#2807)Direct upstream source · 13884eee278aeb8a2b26a29541c4d49f27c82ce1

This Research brief was generated by Terra from a dated upstream research digest. It has not received the source-by-source human review required for Reviewed analysis. Material limit: This is a merged Hydra repository change, not evidence of a tagged release or mainnet deployment; the supplied sources do not report exploitation or actual funds lost.