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Kunal Arora 6f377f1743 feat: implement `OPL2ToL1Ism` contracts (#4319) ... ### Description Implementing the `OPL2ToL1Hook` and OPL2ToL1Ism` contracts for using the Optimism native bridge for sending messages from the L2 to L1. - Optimism needs double call encoding for the direct portal call because the portal itself calls the l1Messenger which then directs it to the ism. ### Drive-by changes None ### Related issues - fixes https://github.com/hyperlane-xyz/issues/issues/1346 ### Backward compatibility Yes ### Testing Unit testing with mocks for OP contracts		3 months ago
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aggregation	Improve standard hook metadata API	1 year ago
igp	fix: only evaluate dynamic revert reasons in reverting branch (#4046)	4 months ago
layer-zero	LayerZero Hook and ISM (#3102)	9 months ago
libs	feat: support Arbitrum L2->L1 post dispatch hook (#3853)	5 months ago
routing	fix: only evaluate dynamic revert reasons in reverting branch (#4046)	4 months ago
warp-route	feat: support Arbitrum L2->L1 post dispatch hook (#3853)	5 months ago
ArbL2ToL1Hook.sol	feat: support Arbitrum L2->L1 post dispatch hook (#3853)	5 months ago
MerkleTreeHook.sol	Remediate Trevor's comments (#2835)	1 year ago
OPL2ToL1Hook.sol	feat: implement `OPL2ToL1Ism` contracts (#4319)	3 months ago
OPStackHook.sol	Graduate to yarn 4 🧶 (#2899)	1 year ago
PausableHook.sol	Improve standard hook metadata API	1 year ago
PolygonPosHook.sol	add polygon hook and ism (#3038)	7 months ago
ProtocolFee.sol	Add storage layout diff checks (#2991)	12 months ago