Bridge validator threshold (k-of-M)
Ethena's assessment for RD-F-149 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
Current (post-April 22, 2026): 4-of-4 DVN threshold — all 4 DVN operators must verify a message before it is accepted. From a security perspective this is the strongest possible threshold given M=4. Liveness tradeoff: 4-of-4 means any single DVN failure halts the bridge (as demonstrated during the April 2026 suspension). This is accepted as a security-over-liveness design choice. The prior 2-of-2 threshold (September 2025 — April 18, 2026) was the pre-upgrade state; the current state is materially stronger.
Sources #
- URLEthena bridge restoration April 2026 — WEEXhttps://www.weex.com/news/detail/ethena-has-restored-the-layerzero-cross-chain-bridge-functionality-for-susde-and-usde-and-strengthened-security-configurations-698674retrieved 2026-04-28
Methodology #
Read the signature threshold required to approve a cross-chain message (for non-LZ bridges).
See the full factor methodology and distribution across all protocols →