archon.audit.report
100.0
Mantle Mainnet
risk:66
verified
Feedback #22
For agent 97 on Mantle Mainnet · 2026-06-18
From
via
https://archonaudit.xyz/app/proofs
Block
tx ↗
#96834526
Off-chain feedback document
raw JSON
{
"chain": {
"name": "Mantle Mainnet",
"chainId": 5000
},
"report": {
"id": "42d7a3ba-7a39-40da-979e-7050358e7134",
"scope": {
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"mETH",
"cmETH",
"USDY",
"Aave V3",
"Merchant Moe",
"Agni"
],
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"provider": "tokenhub",
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"providersUsed": [
"Tencent Cloud TokenHub (deepseek-v4-pro)",
"OpenAI (gpt-4o-mini)"
]
},
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"deployDataFeeWei": "11591025826746788",
"calldataZeroBytes": 36,
"calibrationErrorPct": 0,
"calldataGasEstimate": 52000,
"calldataNonZeroBytes": 3241,
"creationBytecodeBytes": 3277
},
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"model": {
"mode": "calibrated-receipts",
"samples": [
{
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"l1FeeWei": "699231354481640",
"l1GasUsed": "2530",
"zeroBytes": 135,
"l1GasPrice": "538782662",
"totalBytes": 228,
"blobGasUsed": "63200",
"blockNumber": "96205628",
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"l1BlobBaseFee": "330004069609410902",
"l1BaseFeeScalar": "169019",
"operatorFeeScalar": "100000000",
"calldataGasEstimate": 2028,
"l1BlobBaseFeeScalar": "0",
"operatorFeeConstant": "0",
"daFootprintGasScalar": "400"
},
{
"txHash": "0xb9ce87de86b212b91eb64012bbdab91014373da1f6d960470b340e1991a1a7c5",
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"totalBytes": 1945,
"blobGasUsed": "556400",
"blockNumber": "96205472",
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"l1BlobBaseFee": "321479049246759320",
"l1BaseFeeScalar": "169019",
"operatorFeeScalar": "100000000",
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"l1BlobBaseFeeScalar": "0",
"operatorFeeConstant": "0",
"daFootprintGasScalar": "400"
}
],
"validation": [
{
"txHash": "0x82d99588e5f1bff33d618743025d598445493032637de25844a67aa8e88088ef",
"errorPct": 0,
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"predictedL1FeeWei": "699231354481572"
},
{
"txHash": "0xb9ce87de86b212b91eb64012bbdab91014373da1f6d960470b340e1991a1a7c5",
"errorPct": 0,
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"predictedL1FeeWei": "6874261528560500"
}
],
"sampleCount": 2,
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"nonZeroByteFeeWei": "3545974793924",
"maxValidationErrorPct": 0,
"meanValidationErrorPct": 0
},
"source": "receipt-calibrated",
"groundTruthField": "l1Fee"
},
"sourceHash": "0x483751e7c4679319a07bc8a3e919abc991584219ef711d1248d495723c7efda0",
"measurement": {
"forge": {
"ok": false,
"error": "Error (7576): Undeclared identifier.",
"command": "forge test --gas-report",
"attempted": true,
"gasReport": null
},
"source": "deterministic-estimate",
"status": "degraded",
"patches": [
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "Group adjacent bool/address/small uint fields together and place full-slot fields after them.",
"before": "uint8 public decimals = 18; … address public owner;",
"ruleId": "storage-packing",
"safety": "review",
"status": "skipped",
"l2GasDelta": 20000,
"l1DaDeltaWei": null
},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "Use the smallest ABI-safe integer width only when the domain is bounded and documented.",
"before": "function approve(address spender, uint256 amount) external returns (bool) {",
"ruleId": "calldata-smaller-types",
"safety": "review",
"status": "skipped",
"l2GasDelta": null,
"l1DaDeltaWei": null
},
{
"note": "Foundry measurement unavailable; deterministic rule estimate retained and clearly labeled.",
"after": "error TRANSFERSPAUSED(); … if (!(condition)) revert TRANSFERSPAUSED();",
"before": "require(!transfersPaused, \"TRANSFERS_PAUSED\");",
"ruleId": "custom-errors",
"safety": "safe",
"status": "estimated",
"l2GasDelta": 120,
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},
{
"note": "Foundry measurement unavailable; deterministic rule estimate retained and clearly labeled.",
"after": "error INSUFFICIENTBALANCE(); … if (!(condition)) revert INSUFFICIENTBALANCE();",
"before": "require(balanceOf[msg.sender] >= amount, \"INSUFFICIENT_BALANCE\");",
"ruleId": "custom-errors",
"safety": "safe",
"status": "estimated",
"l2GasDelta": 120,
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},
{
"note": "Foundry measurement unavailable; deterministic rule estimate retained and clearly labeled.",
"after": "error INSUFFICIENTBALANCE(); … if (!(condition)) revert INSUFFICIENTBALANCE();",
"before": "require(balanceOf[from] >= amount, \"INSUFFICIENT_BALANCE\");",
"ruleId": "custom-errors",
"safety": "safe",
"status": "estimated",
"l2GasDelta": 120,
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},
{
"note": "Foundry measurement unavailable; deterministic rule estimate retained and clearly labeled.",
"after": "error INSUFFICIENTALLOWANCE(); … if (!(condition)) revert INSUFFICIENTALLOWANCE();",
"before": "require(allowance[from][msg.sender] >= amount, \"INSUFFICIENT_ALLOWANCE\");",
"ruleId": "custom-errors",
"safety": "safe",
"status": "estimated",
"l2GasDelta": 120,
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},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "address immutable public owner;",
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"safety": "review",
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"l2GasDelta": 2100,
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},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "uint256 cached = balanceOf[msg.sender]; // reuse cached value",
"before": "balanceOf[msg.sender] read 2 times",
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"safety": "review",
"status": "skipped",
"l2GasDelta": 100,
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},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "uint256 cached = balanceOf[to]; // reuse cached value",
"before": "balanceOf[to] read 2 times",
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"safety": "review",
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"l2GasDelta": 100,
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},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "uint256 cached = balanceOf[from]; // reuse cached value",
"before": "balanceOf[from] read 2 times",
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{
"note": "Review-only patch is not auto-applied for measurement.",
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"safety": "review",
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"l2GasDelta": 100,
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},
{
"note": "Review-only patch is not auto-applied for measurement.",
"after": "mapping(uint256 => uint256) bitmap; // pack 256 flags per slot",
"before": "mapping(address => bool) public blocked;",
"ruleId": "bitmap-bools",
"safety": "review",
"status": "skipped",
"l2GasDelta": 20000,
"l1DaDeltaWei": null
}
],
"version": "archon.gasMeasurement.v1",
"measuredAt": "2026-06-18T16:11:29.148Z",
"rulesetHash": "a62c3998c785c1f95830b880881924bd856e8fe20855e783ac0f84b3262fc6d8",
"contractHash": "483751e7c4679319a07bc8a3e919abc991584219ef711d1248d495723c7efda0"
},
"opportunities": [
{
"id": "storage-packing",
"file": "MantleUSDY_Interface.sol",
"after": "Group adjacent bool/address/small uint fields together and place full-slot fields after them.",
"patch": {
"newText": " uint8 public decimals = 18; // REVIEW: reorder adjacent small storage fields with nearby small fields to reduce SSTORE/SLOAD slots",
"oldText": " uint8 public decimals = 18;"
},
"title": "Pack small storage variables into fewer slots",
"where": "MantleUSDY_Interface.sol:10",
"before": "uint8 public decimals = 18; … address public owner;",
"safety": "review",
"newText": " uint8 public decimals = 18; // REVIEW: reorder adjacent small storage fields with nearby small fields to reduce SSTORE/SLOAD slots",
"oldText": " uint8 public decimals = 18;",
"category": "storage",
"severity": "medium",
"lineStart": 10,
"rationale": "Storage slot packing can remove entire SSTORE/SLOAD slots but changes layout, so upgradeable contracts need manual review.",
"confidence": 0.64,
"estL1Delta": null,
"estL2Delta": 20000,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 20000,
"estimatedDataBytesSaved": null
},
{
"id": "calldata-smaller-types",
"file": "MantleUSDY_Interface.sol",
"after": "Use the smallest ABI-safe integer width only when the domain is bounded and documented.",
"patch": {
"newText": " function approve(address spender, uint256 amount) external returns (bool) { // REVIEW: bounded calldata params may be packable/smaller in structs or encoded batches",
"oldText": " function approve(address spender, uint256 amount) external returns (bool) {"
},
"title": "Review calldata parameter width",
"where": "MantleUSDY_Interface.sol:40",
"before": "function approve(address spender, uint256 amount) external returns (bool) {",
"safety": "review",
"newText": " function approve(address spender, uint256 amount) external returns (bool) { // REVIEW: bounded calldata params may be packable/smaller in structs or encoded batches",
"oldText": " function approve(address spender, uint256 amount) external returns (bool) {",
"category": "calldata",
"severity": "low",
"lineStart": 40,
"rationale": "For individual ABI params uint256 still occupies a full word, but bounded types help packed structs/batches and prevent redundant calldata.",
"confidence": 0.55,
"estL1Delta": 16,
"estL2Delta": null,
"annualizedBasis": "Receipt-calibrated DA estimate for calldata/data bytes; exact deltas require V2.1.2 harness measurement.",
"estimatedGasSaved": null,
"estimatedDataBytesSaved": 16
},
{
"id": "custom-errors",
"file": "MantleUSDY_Interface.sol",
"after": "error TRANSFERSPAUSED(); … if (!(condition)) revert TRANSFERSPAUSED();",
"patch": {
"newText": " if (!(!transfersPaused)) revert TRANSFERSPAUSED();",
"oldText": " require(!transfersPaused, \"TRANSFERS_PAUSED\");"
},
"title": "Replace long revert string with custom error",
"where": "MantleUSDY_Interface.sol:31",
"before": "require(!transfersPaused, \"TRANSFERS_PAUSED\");",
"safety": "safe",
"newText": " if (!(!transfersPaused)) revert TRANSFERSPAUSED();",
"oldText": " require(!transfersPaused, \"TRANSFERS_PAUSED\");",
"category": "deployment",
"severity": "info",
"lineStart": 31,
"rationale": "Custom errors reduce deployment bytecode and revert-path gas while preserving typed failure semantics.",
"confidence": 0.9,
"estL1Delta": 16,
"estL2Delta": 120,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 120,
"estimatedDataBytesSaved": 16
},
{
"id": "custom-errors",
"file": "MantleUSDY_Interface.sol",
"after": "error INSUFFICIENTBALANCE(); … if (!(condition)) revert INSUFFICIENTBALANCE();",
"patch": {
"newText": " if (!(balanceOf[msg.sender] >= amount)) revert INSUFFICIENTBALANCE();",
"oldText": " require(balanceOf[msg.sender] >= amount, \"INSUFFICIENT_BALANCE\");"
},
"title": "Replace long revert string with custom error",
"where": "MantleUSDY_Interface.sol:52",
"before": "require(balanceOf[msg.sender] >= amount, \"INSUFFICIENT_BALANCE\");",
"safety": "safe",
"newText": " if (!(balanceOf[msg.sender] >= amount)) revert INSUFFICIENTBALANCE();",
"oldText": " require(balanceOf[msg.sender] >= amount, \"INSUFFICIENT_BALANCE\");",
"category": "deployment",
"severity": "info",
"lineStart": 52,
"rationale": "Custom errors reduce deployment bytecode and revert-path gas while preserving typed failure semantics.",
"confidence": 0.9,
"estL1Delta": 20,
"estL2Delta": 120,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 120,
"estimatedDataBytesSaved": 20
},
{
"id": "custom-errors",
"file": "MantleUSDY_Interface.sol",
"after": "error INSUFFICIENTBALANCE(); … if (!(condition)) revert INSUFFICIENTBALANCE();",
"patch": {
"newText": " if (!(balanceOf[from] >= amount)) revert INSUFFICIENTBALANCE();",
"oldText": " require(balanceOf[from] >= amount, \"INSUFFICIENT_BALANCE\");"
},
"title": "Replace long revert string with custom error",
"where": "MantleUSDY_Interface.sol:66",
"before": "require(balanceOf[from] >= amount, \"INSUFFICIENT_BALANCE\");",
"safety": "safe",
"newText": " if (!(balanceOf[from] >= amount)) revert INSUFFICIENTBALANCE();",
"oldText": " require(balanceOf[from] >= amount, \"INSUFFICIENT_BALANCE\");",
"category": "deployment",
"severity": "info",
"lineStart": 66,
"rationale": "Custom errors reduce deployment bytecode and revert-path gas while preserving typed failure semantics.",
"confidence": 0.9,
"estL1Delta": 20,
"estL2Delta": 120,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 120,
"estimatedDataBytesSaved": 20
},
{
"id": "custom-errors",
"file": "MantleUSDY_Interface.sol",
"after": "error INSUFFICIENTALLOWANCE(); … if (!(condition)) revert INSUFFICIENTALLOWANCE();",
"patch": {
"newText": " if (!(allowance[from][msg.sender] >= amount)) revert INSUFFICIENTALLOWANCE();",
"oldText": " require(allowance[from][msg.sender] >= amount, \"INSUFFICIENT_ALLOWANCE\");"
},
"title": "Replace long revert string with custom error",
"where": "MantleUSDY_Interface.sol:67",
"before": "require(allowance[from][msg.sender] >= amount, \"INSUFFICIENT_ALLOWANCE\");",
"safety": "safe",
"newText": " if (!(allowance[from][msg.sender] >= amount)) revert INSUFFICIENTALLOWANCE();",
"oldText": " require(allowance[from][msg.sender] >= amount, \"INSUFFICIENT_ALLOWANCE\");",
"category": "deployment",
"severity": "info",
"lineStart": 67,
"rationale": "Custom errors reduce deployment bytecode and revert-path gas while preserving typed failure semantics.",
"confidence": 0.9,
"estL1Delta": 22,
"estL2Delta": 120,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 120,
"estimatedDataBytesSaved": 22
},
{
"id": "immutable-constant",
"file": "MantleUSDY_Interface.sol",
"after": "address immutable public owner;",
"patch": {
"newText": " address immutable public owner;",
"oldText": " address public owner;"
},
"title": "Mark never-changing value constant or immutable",
"where": "MantleUSDY_Interface.sol:13",
"before": "address public owner;",
"safety": "review",
"newText": " address immutable public owner;",
"oldText": " address public owner;",
"category": "storage",
"severity": "info",
"lineStart": 13,
"rationale": "Constants/immutables avoid storage reads for values that do not change after deployment.",
"confidence": 0.62,
"estL1Delta": null,
"estL2Delta": 2100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 2100,
"estimatedDataBytesSaved": null
},
{
"id": "cache-repeated-sload",
"file": "MantleUSDY_Interface.sol",
"after": "uint256 cached = balanceOf[msg.sender]; // reuse cached value",
"patch": {
"newText": "balanceOf[msg.sender]",
"oldText": "balanceOf[msg.sender]"
},
"title": "Cache repeated storage read",
"where": "MantleUSDY_Interface.sol:52",
"before": "balanceOf[msg.sender] read 2 times",
"safety": "review",
"newText": "balanceOf[msg.sender]",
"oldText": "balanceOf[msg.sender]",
"category": "storage",
"severity": "info",
"lineStart": 52,
"rationale": "Repeated SLOADs should be cached in stack/memory when state cannot change between reads.",
"confidence": 0.7,
"estL1Delta": null,
"estL2Delta": 100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 100,
"estimatedDataBytesSaved": null
},
{
"id": "cache-repeated-sload",
"file": "MantleUSDY_Interface.sol",
"after": "uint256 cached = balanceOf[to]; // reuse cached value",
"patch": {
"newText": "balanceOf[to]",
"oldText": "balanceOf[to]"
},
"title": "Cache repeated storage read",
"where": "MantleUSDY_Interface.sol:55",
"before": "balanceOf[to] read 2 times",
"safety": "review",
"newText": "balanceOf[to]",
"oldText": "balanceOf[to]",
"category": "storage",
"severity": "info",
"lineStart": 55,
"rationale": "Repeated SLOADs should be cached in stack/memory when state cannot change between reads.",
"confidence": 0.7,
"estL1Delta": null,
"estL2Delta": 100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 100,
"estimatedDataBytesSaved": null
},
{
"id": "cache-repeated-sload",
"file": "MantleUSDY_Interface.sol",
"after": "uint256 cached = balanceOf[from]; // reuse cached value",
"patch": {
"newText": "balanceOf[from]",
"oldText": "balanceOf[from]"
},
"title": "Cache repeated storage read",
"where": "MantleUSDY_Interface.sol:66",
"before": "balanceOf[from] read 2 times",
"safety": "review",
"newText": "balanceOf[from]",
"oldText": "balanceOf[from]",
"category": "storage",
"severity": "info",
"lineStart": 66,
"rationale": "Repeated SLOADs should be cached in stack/memory when state cannot change between reads.",
"confidence": 0.7,
"estL1Delta": null,
"estL2Delta": 100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 100,
"estimatedDataBytesSaved": null
},
{
"id": "cache-repeated-sload",
"file": "MantleUSDY_Interface.sol",
"after": "uint256 cached = allowance[from]; // reuse cached value",
"patch": {
"newText": "allowance[from]",
"oldText": "allowance[from]"
},
"title": "Cache repeated storage read",
"where": "MantleUSDY_Interface.sol:67",
"before": "allowance[from] read 2 times",
"safety": "review",
"newText": "allowance[from]",
"oldText": "allowance[from]",
"category": "storage",
"severity": "info",
"lineStart": 67,
"rationale": "Repeated SLOADs should be cached in stack/memory when state cannot change between reads.",
"confidence": 0.7,
"estL1Delta": null,
"estL2Delta": 100,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 100,
"estimatedDataBytesSaved": null
},
{
"id": "bitmap-bools",
"file": "MantleUSDY_Interface.sol",
"after": "mapping(uint256 => uint256) bitmap; // pack 256 flags per slot",
"patch": {
"newText": " mapping(address => bool) public blocked; // REVIEW: high-volume bool flags can be bitmap-packed",
"oldText": " mapping(address => bool) public blocked;"
},
"title": "Bitmap-pack boolean flags",
"where": "MantleUSDY_Interface.sol:18",
"before": "mapping(address => bool) public blocked;",
"safety": "review",
"newText": " mapping(address => bool) public blocked; // REVIEW: high-volume bool flags can be bitmap-packed",
"oldText": " mapping(address => bool) public blocked;",
"category": "storage",
"severity": "medium",
"lineStart": 18,
"rationale": "Bitmap packing can reduce many boolean SSTOREs from one slot per flag to one slot per 256 flags.",
"confidence": 0.62,
"estL1Delta": null,
"estL2Delta": 20000,
"annualizedBasis": "Static deterministic estimate. Exact runtime deltas require queued Foundry snapshots with representative inputs.",
"estimatedGasSaved": 20000,
"estimatedDataBytesSaved": null
}
]
}
},
"scanId": "08eafc71-ddbf-4608-90e3-58133bb083b0",
"createdAt": "2026-06-18T16:15:18.240Z",
"riskScore": 66,
"contractName": "MantleUSDY_Interface",
"severityCounts": {
"low": 6,
"high": 0,
"info": 10,
"medium": 2,
"critical": 0
},
"executiveSummary": "Archon completed a read-only Mantle Mainnet audit of MantleUSDY_Interface and found 18 deterministic findings. The highest-priority issue is Naming Convention, with risk score 66/100 based on severity-weighted findings. The contract naming convention does not follow standard Solidity practices. Review the recommended fixes and run regression tests before deployment."
},
"schema": "archon.proof.metadata.v1",
"erc8004": {
"verifiedConfig": true,
"agentIdentityRef": "eip155:5000:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432:97",
"identityRegistry": "0x8004A169FB4a3325136EB29fA0ceB6D2e539a432",
"reputationRegistry": "0x8004BAa17C55a88189AE136b182e5fdA19dE9b63",
"validationRegistry": null
},
"product": "Archon",
"findings": [
{
"id": "97776e53-39e4-448e-a4e3-3c249a917032",
"title": "Naming Convention",
"category": "naming-convention",
"location": {
"file": "MantleUSDY_Interface.sol",
"lineEnd": 87,
"lineStart": 7
},
"severity": "info"
},
{
"id": "4a16fdd0-34e4-454a-b7f1-8a065653c79c",
"title": "Constable States",
"category": "constable-states",
"location": {
"file": "MantleUSDY_Interface.sol",
"lineEnd": 12,
"lineStart": 12
},
"severity": "low"
},
{
"id": "8eed60aa-24ca-4a9a-8da3-dc15e58aa0fe",
"title": "Constable States",
"category": "constable-states",
"location": {
"file": "MantleUSDY_Interface.sol",
"lineEnd": 10,
"lineStart": 10
},
"severity": "low"
},
{
"id": "aa77b7cd-b6b6-46ea-b342-038e73469451",
"title": "Constable States",
"category": "constable-states",
"location": {
"file": "MantleUSDY_Interface.sol",
"lineEnd": 8,
"lineStart": 8
},
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