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feat: [do not merge] add Airbender PLONK verifier slot to DualVerifier#2145

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feat: [do not merge] add Airbender PLONK verifier slot to DualVerifier#2145
0xVolosnikov wants to merge 1 commit intomainfrom
vv/eravm-airbender-settlement

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Extends the verifier dispatcher to route proofs to one of three verifiers: Boojum FFLONK (type 0), Boojum PLONK (type 1), and the new Airbender PLONK verifier (type 2). Airbender proofs are RISC-V FRI proofs wrapped into a PLONK SNARK with a separate verification key from Boojum's; an FFLONK-wrapped variant can be added later.

The default gateway deploy flow leaves the Airbender slot as address(0). Chains that want Airbender support deploy their own DualVerifier and point their diamond at it, which keeps the switch per-batch and instant.

What ❔

Why ❔

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  • PR title corresponds to the body of PR (we generate changelog entries from PRs).
  • Tests for the changes have been added / updated.
  • Documentation comments have been added / updated.

Extends the verifier dispatcher to route proofs to one of three verifiers:
Boojum FFLONK (type 0), Boojum PLONK (type 1), and the new Airbender PLONK
verifier (type 2). Airbender proofs are RISC-V FRI proofs wrapped into a
PLONK SNARK with a separate verification key from Boojum's; an FFLONK-wrapped
variant can be added later.

The default gateway deploy flow leaves the Airbender slot as address(0).
Chains that want Airbender support deploy their own DualVerifier and point
their diamond at it, which keeps the switch per-batch and instant.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
@0xVolosnikov 0xVolosnikov changed the title feat: [do. not merge] add Airbender PLONK verifier slot to DualVerifier feat: [do not merge] add Airbender PLONK verifier slot to DualVerifier Apr 17, 2026
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Coverage after merging vv/eravm-airbender-settlement into main will be

84.45%

Coverage Report
FileStmtsBranchesFuncsLinesUncovered Lines
contracts/bridge
   BridgeHelper.sol85.71%100%100%85%31, 36, 41
   BridgedStandardERC20.sol82.14%100%92.31%80.28%120–121, 126–127, 139–140, 164, 205, 212, 219, 229–230, 63, 91
   L1ERC20Bridge.sol94%100%100%93.02%189, 208, 270
   L1Nullifier.sol83.33%100%86.21%82.89%114, 128–130, 160, 221, 224, 234, 237, 247, 250, 418–420, 424–425, 452, 518, 602, 614, 652, 654, 698, 710, 713, 715, 728, 741–742, 746–747, 767
contracts/bridge/asset-router
   AssetRouterBase.sol95.45%100%100%94.44%59, 87
   L1AssetRouter.sol88.33%100%88.89%88.24%208, 246, 262, 349, 360, 391, 430–431, 445, 476, 548, 60, 637, 648, 662, 667, 76, 84
contracts/bridge/interfaces
   AssetHandlerModifiers.sol75%100%100%66.67%13
contracts/bridge/ntv
   L1NativeTokenVault.sol84.82%100%88.24%84.21%144–150, 152, 220–221, 223, 234, 236, 240, 66
   NativeTokenVault.sol89.50%100%92%89.10%102, 234, 239, 256, 274, 279, 295, 314, 322, 488, 503, 531, 564–565, 569–570, 74
contracts/bridgehub
   Bridgehub.sol83.39%100%84.78%83.15%115, 123, 128–130, 137, 165–166, 182, 227–228, 236, 239, 248, 258, 271, 286, 315, 339, 342, 401, 417, 448, 528, 610, 708, 712, 716–717, 736, 739, 790, 793, 796, 831, 835, 838, 873–874, 878–879, 887–888, 892–893
   CTMDeploymentTracker.sol73.47%100%81.82%71.05%106, 110, 114, 139, 143–144, 32, 40, 65, 78–79
   ChainAssetHandler.sol77.94%100%80%77.59%125, 139, 142, 152, 197, 245–246, 250–251, 55, 62–63, 71
   L2MessageVerification.sol100%100%100%100%
   MessageRoot.sol94.87%100%100%93.85%102, 136, 183, 193
contracts/common
   ReentrancyGuard.sol95%100%100%94.12%79
contracts/common/l2-helpers
   L2ContractHelper.sol94.34%100%100%93.33%102, 108, 112
   SystemContractsCaller.sol0%100%0%0%102, 114, 122–125, 128, 135–139, 141–142, 32–34, 37, 44–45, 47, 49, 51, 53, 66, 69, 72, 75, 78, 83, 89, 91, 93, 96, 98
contracts/common/libraries
   DataEncoding.sol85.11%100%100%81.58%109–110, 117–118, 163, 177, 45
   DynamicIncrementalMerkle.sol73.91%100%80%73.17%66–70, 72–74, 76–78
   FullMerkle.sol100%100%100%100%
   Merkle.sol98.15%100%100%97.96%83
   MessageHashing.sol95.16%100%100%94.64%113, 77, 94
   SemVer.sol100%100%100%100%
   UncheckedMath.sol100%100%100%100%
   UnsafeBytes.sol100%100%100%100%
contracts/governance
   AccessControlRestriction.sol100%100%100%100%
   ChainAdmin.sol97.87%100%100%97.30%39
   ChainAdminOwnable.sol44.83%100%40%45.83%28, 38–40, 46–48, 57, 66, 77–79, 81
   Governance.sol100%100%100%100%
   L2ProxyAdminDeployer.sol0%100%0%0%16–18, 20
   PermanentRestriction.sol88.80%100%100%87.39%103, 110–111, 199–200, 203–204, 207, 209–210, 239, 287, 309, 340
   ServerNotifier.sol93.10%100%100%90.91%55, 65
   TransitionaryOwner.sol0%100%0%0%16–17, 21–23
contracts/governance/restriction
   Restriction.sol100%100%100%100%
   RestrictionValidator.sol100%100%100%100%
contracts/state-transition
   AccessControlEnumerablePerChainAddressUpgradeable.sol98.15%100%100%97.67%179
   ChainTypeManager.sol86.07%100%84.62%86.42%111, 123, 129, 137–138, 248–251, 264–267, 282, 412, 474, 502, 509, 536, 584, 592–593
   ValidatorTimelock.sol89.25%100%77.78%92%120, 140, 163, 273, 292, 97
contracts/state-transition/chain-deps
   DiamondInit.sol92.68%100%100%92.50%50, 54, 58
   DiamondProxy.sol100%100%100%100%
   GatewayCTMDeployer.sol0%100%0%0%166–167, 170, 172–174, 176, 178, 180, 188, 190, 192, 194, 196–197, 203, 215, 223, 226–227, 229, 235, 239–240, 248, 253–255, 262, 267–269, 282–285, 299, 304–307, 311–313, 317, 330, 336, 338, 340–341, 345, 347–349, 357, 362, 366–367, 373, 379, 385, 392, 402, 408, 410, 420, 428, 442, 447, 452
contracts/state-transition/chain-deps/facets
   Admin.sol81.78%100%88%81%153–154, 171, 174, 178, 185–187, 190, 192, 195, 199–200, 204, 300, 303, 312, 315, 325, 332, 352, 366, 369, 376, 389, 392–393, 395–396, 398–399, 401, 404, 435, 439, 460, 466, 51
   Executor.sol88.22%100%100%87.04%133, 147, 154–156, 183, 221, 270, 279, 284,

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