Implemented GoatPro.sol: 1 billion GPRO, 18 decimals, minted once to the deployer, with no administrative powers.

Included vendored dependencies and deployment documentation.

Validation passed:

• forge build with Solidity 0.8.26
• forge test: 29 passing checks using the specified fuzz seed
• forge fmt --check

Full launch integration remains for the independent verifier.

Created launch.json matching GoatPro’s constructor, exact supply, and required pool/economics values. No application contracts are listed.

forge build succeeded; all 29 tests passed with the supplied fuzz seed. Manifest fields and constructor ABI checks passed. Only launch.json is changed.

The review is complete. The findings file is written with zero defects and a full coverage record, and the working tree is otherwise untouched.

Result: no defects in the assigned area. GoatPro is a 17-line contract that inherits the unmodified OpenZeppelin v5.0.2 ERC-20 and mints 1e27 units to msg.sender in its constructor. I confirmed every vendored OpenZeppelin file is byte-identical to the upstream v5.0.2 release.

What I checked, per guide

• Access control. There is no role, modifier, initializer, proxy or admin function. The only state-changing entry points are approve, transfer and transferFrom, each scoped to msg.sender. Scratch probes confirmed the deployer cannot pull from a holder without an allowance, a stranger cannot pull from the factory, approve only writes the caller's own allowance, and mint, burn, burnFrom, pause, owner and initialize selectors all revert. No receive or fallback, so ETH sends revert. The project's own opcode test shows no DELEGATECALL, CALLCODE or SELFDESTRUCT.
• Asymmetry. transferFrom is the allowance spend plus the same internal transfer that transfer uses. The mint and burn branches of the balance update are both unreachable after construction. The only asymmetry is the standard ERC-20 approval replacement race, which the README documents and which is not a code defect.
• Trust gap. With no privileged actor, setter, fee recipient, oracle or callback, there is no seam between authorization and value flow. The factory holding the whole supply at deployment is the launch design.

Coverage record. All three listed entry points are marked holds, plus five invariant rows covering the one-time mint, the absent admin surface, the fixed supply, the paired-function diff and the trust seams. The existing suite of 29 tests, including the 128-run invariant, passes. Slither and Aderyn reported nothing above a cosmetic large-literal note, which I verified is the correct 1e27 supply.

One item is outside what I could verify: the README's claim of chain ID 4663 as the launch target. The token has no chain dependency, so this does not affect the audit.

The findings file is in place and is excluded from the tree by the repository's own exclude list, as intended. No source files were changed.

Result: no defects found in the assigned area. The economics audit of GoatPro (GPRO) against the Pashov Economic Security, Invariant and Flow Gap guides turned up nothing reproducible. The written report is .imd-findings.json with an empty findings list and eight coverage rows.

What the token is. A single 17-line contract inheriting the unmodified OpenZeppelin v5.0.2 ERC-20. The five vendored OpenZeppelin files hash byte for byte to the upstream release. The constructor mints the whole supply to msg.sender and takes no arguments. The ABI exposes only approve, transfer and transferFrom as state-changing entry points.

What I verified.

• Supply invariant. Only the constructor mints, there is no burn, and transfers to the zero address revert. So the supply is fixed at one billion times ten to the eighteenth and can neither grow nor shrink.
• Conservation. The project's 128-run stateful invariant and my own fuzz with eight recipients, including the token contract itself, both keep the sum of balances equal to the supply.
• Launch flows. I modelled the Uniswap v4 sync, transfer and settle balance-delta accounting, the distributor share, the remainder transfer, a claim and a buy-and-sell round trip. Every leg credits exactly the amount sent, so no exemption list is needed because there is no tax or burn.
• Economic dependencies. The runtime bytecode contains no CALL, STATICCALL, DELEGATECALL, CALLCODE, CREATE or SELFDESTRUCT, and no PUSH0 or transient-storage opcodes. There is no oracle, pause, blacklist or owner. Native value sent to the token reverts.
• Sentinels. The zero address as sender, receiver, spender or approver reverts with the ERC-6093 errors.

Static analysis leads. Slither reported nothing. Aderyn's low-severity "large numeric literal" is the supply constant itself, which the tests confirm equals the brief's supply. It is style only and not a defect.

Coverage. All three listed entry points are marked holds, plus rows for the fixed-supply invariant, the constructor mint recipient, the launch flows, the dependency surface and the compiler target. Nothing in my area was left unreached. The existing 29-test suite passes under the pinned fuzz seed. The protected launch harness needs the v4-core dependency and factory environment, which are not in this tree, so the real PoolManager seed and swap remain for the launch verifier.

The review is complete. GoatPro has no defects in the Math Precision, Boundary or Numerical Gap areas, and .imd-findings.json records an empty findings list with eight coverage rows.

What I checked

• Source and dependency integrity. The token is a 17-line contract that inherits unmodified OpenZeppelin ERC20. All five vendored OpenZeppelin files hash-match the upstream v5.0.2 release archive byte for byte, so the arithmetic under review is the audited upstream code.
• Math precision. The supply constant is a compile-time expression equal to exactly 10^27. It fits uint128 and is divisible by 10,000, so the factory's 10/80/10 basis-point splits truncate nothing and cannot overflow. There are no divisions, fees, scale conversions or downcasts anywhere in the token. The aderyn large-literal lead is a style note only.
• Boundaries. I exercised allowance at max, max minus one, exactly the spent value, and one above it. I exercised transfers at balance plus one and max uint, full-balance self-transfers, delegated self-transfers, and zero amounts to and from empty and zero addresses. Every case reverts or succeeds exactly as the ERC-20 spec and the README state. The runtime bytecode contains no CALL, STATICCALL, DELEGATECALL, CALLCODE, CREATE, SELFDESTRUCT or PUSH0, and there is no receive or fallback.
• Numerical gaps. Zero-amount fast paths still hit the zero-address guards. Conservation of balances held under the project's stateful invariant and under my own 512-run three-party fuzz.

Coverage record

Entry point	Verdict
approve	holds
transfer	holds
transferFrom	holds
Supply, decimals, conservation, launch-split exactness, boundary surface, dependency integrity	holds

What I did not reach. Nothing in my area was left unexamined. Chain-specific concerns outside my area, such as Robinhood Chain opcode support beyond the Paris target, were not reviewed. The scratch test directory was removed and the working tree holds only the findings file.

The review is complete and the findings file is written. The tree is otherwise clean, with the scratch tests removed and nothing in src/, test/, lib/ or config touched.

Result: no defects found in the assigned area. .imd-findings.json holds an empty findings list and nine coverage rows: the three entry points, five invariants, and one honestly marked unreached row.

What I checked, by guide

• Execution Trace. Traced approve, transfer and transferFrom from entry to final state through the vendored OpenZeppelin code. Every revert path fires before any storage write, so there is no partial state. A revert inside the transfer step of transferFrom rolls back the allowance decrement. A stranger's zero-value transferFrom cannot alter another spender's allowance. The max-uint allowance sentinel is the documented infinite approval and is not bypassable.
• Periphery. Every vendored OpenZeppelin file, including the LICENSE, is byte-identical to the upstream v5.0.2 tag. Context returns plain msg.sender, decimals() returns 18, and no 5.0.x advisory affects ERC-20.
• First Principles. The supply literal evaluates to exactly 10^27. The constructor mints once to the CREATE2 creator, so the factory receives the whole supply and the transaction origin receives nothing. The disassembled runtime contains no CALL family, DELEGATECALL, CALLCODE, SELFDESTRUCT, CREATE, transient storage or PUSH0 opcodes. There is no receive or fallback, so value-carrying and unknown-selector calls revert. Only the five ERC-20 storage slots are populated.

Verification run

Check	Outcome
forge build, forge fmt --check	pass
Project suite with the pinned fuzz seed	29 passed, 0 failed
Scratch tests (native sends, unknown selectors, contract-caller settle flows, CREATE2 recipient, storage layout)	7 passed, then removed

Static-analysis leads. Slither reported nothing. The aderyn large-numeric-literal note is a style remark on a literal that is correct, so it is recorded in coverage rather than as a finding.

Not reached. The protected launch harness needs v4-core and the launch environment, which are not in this tree. I checked each of its token-side requirements individually instead and found no token-side reason for it to fail.

Expanded the existing suite with failure-path tests, 12 fuzz properties, and three stateful invariants.

forge build and forge test pass with the required seed: 47 tests passed, including 16,384 random invariant calls.

Only test/ files changed. No implementation defects were found.

The review is complete. No defects found, and .imd-findings.json holds an empty findings list with a full coverage record.

What the specialists reported

All four specialists and the independent tester reported no findings. There was nothing to reproduce or merge, so nothing was dropped and nothing was kept.

What I verified myself

• src/GoatPro.sol is a 17-line contract inheriting the unmodified OpenZeppelin v5.0.2 ERC20. Its constructor mints exactly 10^27 units to the deployer, which is the factory under the launch model.
• The compiled ABI exposes only approve, transfer and transferFrom as state-changing functions. There is no owner, mint, burn, pause, blacklist, receive or fallback.
• The vendored ERC20, Context and interface files match the v5.0.2 release text line by line. The upstream hash fetch was refused by the sandbox network policy, so that check is a manual read, not a checksum.
• The manifest matches the code: empty constructor arguments, totalSupply of 10^27, 18 decimals, schema-only keys, lowercase addresses. Creation code is 2,720 bytes and runtime 1,814 bytes, far below the protocol limits.
• The project suite passes, 47 of 47 tests including fuzz and invariant runs. The runtime opcode scan confirms no DELEGATECALL, CALLCODE or SELFDESTRUCT.
• The aderyn large-numeric-literal lead does not reproduce as a defect. The literal evaluates to exactly 10^27, as the tests assert.

Coverage record

All three listed entry points are marked holds, with four additional invariant rows covering the constructor mint, absence of privileged paths, factory deployability and the vendored library's integrity. No files in the repository were changed.