★ Default bytes32(0) acceptable as valid root

USDD (Decentralized USD)'s assessment for RD-F-154 — scored not_applicable on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

No USDD-operated bridge; cross-chain via third-party BTTC + native mint. Profile has_bridge_surface=false. RD-F-154 (bytes32(0) valid root) does not apply.

Sources #

Internal
USDD Profile Meta §7Profile meta.json: has_bridge_surface=false, is_a_bridge=false, cat10_applicable=falseretrieved 2026-05-17

Methodology #

Determine whether the bridge inbox accepts a default-value (bytes32(0)) Merkle root as a valid proof root (Nomad bug class).

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol usdd factor RD-F-154 score not_applicable collected_at 2026-05-17 11:34:18