Implemented SoothToken.sol: 1 billion SOOTH, 18 decimals, minted once entirely to the deployer.

Dependencies are vendored for offline builds. Deployment parameters, assumptions, and operational responsibilities are documented in README.md.

Validation passed:

• forge build
• forge test: 26 passed, including fuzz and invariant checks using the supplied seed
• forge fmt --check

Done. I wrote launch.json for the Sooth Protocol launch and verified it against the accepted tree.

What the manifest says

• Kind is custom_token. The token contract is SoothToken, named Sooth Protocol, symbol SOOTH, 18 decimals.
• Constructor arguments are empty, matching the accepted contract, which takes none and mints the whole supply to msg.sender.
• totalSupply is 1000000000000000000000000000, exactly the contract's INITIAL_SUPPLY constant.
• The contracts list is empty because the accepted tree contains only the token.
• pool and economics are copied verbatim from the launch reference: IMD pair address, fee 12500, tick spacing 60, one-to-one provenance price, and the requester's 80% pool share, 3,500 IMD opening cap and remainder address.
• notes describe only the token's actual behavior, under 700 characters.

Checks run

• A local script confirmed the manifest's keys, supply string, verbatim economics, lowercase addresses and notes length.
• forge build compiled cleanly.
• forge test with the verifier's fuzz seed passed all 26 tests.
• Git status shows launch.json as the only new file. No other file changed.

I added two test files for the SOOTH token. The full suite passes with the verifier's fuzz seed: 45 tests across 4 suites, with no failures and no unexpected reverts in either invariant handler.

What the contract is: src/SoothToken.sol is a plain OpenZeppelin ERC-20. Its constructor mints 10^27 base units (1,000,000,000 tokens with 18 decimals) once, to whoever deploys it. It has no owner, no other functions and no changes to how transfers work. I found no defects, so I didn't write .imd-findings.json. The earlier contributor's tests already covered most of the basics; these files add to them without changing them.

test/SoothToken.edges.t.sol (18 tests):

• Launch in one transaction: a helper contract deploys the token with CREATE2 and splits the supply in a single constructor, the way the factory does. The helper ends up holding the whole supply, then nothing. The amounts arrive exactly, and neither the test contract nor tx.origin ever holds any.
• Deployment and bytecode: separate launches produce separate tokens, and deploying twice with the same salt reverts. The deployed code is under the 24,576-byte size limit and has no reachable DELEGATECALL, CALLCODE or SELFDESTRUCT.
• Return values and bad calls: transfer, approve and transferFrom each return a 32-byte true. Sending ether, calling an unknown function, or sending a call with its last argument cut off all revert.
• Failure paths: transferFrom from the zero address, transferring 1 wei from an empty account, and spending again after an allowance is used up. Also that an allowance belongs to one owner and one spender, and that an allowance one below the maximum still goes down when spent.
• Tokens sent to the token contract are stuck, because nothing can take them out again.
• Five fuzz tests at 1,000 runs each: transfers between any two accounts conserve the supply, approve always overwrites the previous value, overdraws revert with the exact error and amounts, a failed transferFrom leaves the allowance as it was, and a stranger can't move a holder's tokens.

test/SoothToken.openInvariant.t.sol: a second invariant suite. Unlike the existing one, which uses four fixed holders, its set of holders grows as random new addresses are added (up to 24), and the token contract itself is one of them. Random sequences of transfers and approvals are mixed with calls that must be rejected: sending to the zero address, approving the zero address, spending from the zero address, and spending more than the allowance. Each rejected call must revert with the exact error and change nothing. After every sequence it checks that:

• the supply never changes and the tracked holders hold all of it;
• every balance and allowance matches the test's own independent record;
• the name, symbol and decimals never change.

Run counts are set inside the files (invariant.runs = 256, fuzz.runs = 1000), since foundry.toml isn't mine to change.

One thing that isn't a bug: I first expected transferFrom(address(0), to, 0) to fail on the sender check. In OpenZeppelin v5 it fails earlier, on the approver check, because the remaining allowance is written back before the transfer happens. Either way the call reverts, which is correct, so the tests now expect the error the library actually raises.

The only changes in the working tree are the two new files under test/.

The review is complete and written to .imd-findings.json. The working tree is otherwise untouched.

Result: the token holds on every check in my area. SoothToken is an unmodified OpenZeppelin v5.0.2 ERC20 with a single constructor mint of 10^27 units to msg.sender, 18 decimals, no owner, no mint, burn, pause, blacklist, hook or external call. The Economic Security, Invariant and Flow Gap failure modes all depend on surfaces this contract does not have.

What I verified concretely:

• Launch flows arrive whole. A CREATE2 factory analogue received the full supply, moved the swarm share, had 80% pulled by a pool-manager analogue through transferFrom, forwarded the remainder, and a trader bought and sold back exactly. Supply unchanged throughout.
• Conservation invariant. The project's own 128-run stateful suite plus a scratch fuzz over eight random holders kept sum of balances equal to total supply.
• Protected floor conditions. I re-ran the floor's reachable-opcode scan against the compiled runtime: no DELEGATECALL, CALLCODE or SELFDESTRUCT. Every admin selector the floor probes reverts.
• OpenZeppelin production files match their recorded hashes and the v5.0.2 source.

One low finding. DEPENDENCIES.md claims unmodified upstream sources and tells the operator to run sha256sum --check DEPENDENCIES.sha256. On the committed tree that command fails for seven forge-std files. The recorded hashes are the true upstream v1.9.7 hashes, and the diffs are formatter line-wrapping only, so the files were reformatted after hashing. Test-only code, no effect on the token, but the shipped integrity check reports failure on an honest tree.

Coverage: all three ABI entry points are marked holds, with six extra rows for the invariants and launch flows I traced. Nothing in the assigned area was left unreached. Static analysis leads (aderyn's large-literal note) were confirmed benign: the literal equals the manifest supply exactly.

The review is complete and .imd-findings.json is written with one low finding and nine coverage rows.

Outcome. SoothToken has no defect in the assigned area. It is a plain OpenZeppelin v5.0.2 ERC-20 with a constructor mint of exactly 10^27 units to msg.sender and nothing else. I traced all three state-changing entry points for access, asymmetry and trust-gap failure modes and each holds.

What I verified

• The five production OpenZeppelin files are byte-identical to the upstream v5.0.2 release, fetched independently.
• The compiled ABI exposes only approve, transfer, transferFrom and views. There is no receive, fallback, mint, burn, owner, pause, blacklist, hook or proxy path.
• A scratch Foundry test deployed the token through a CREATE2 factory and probed the surface: ETH sends, empty calldata and unknown selectors revert, the factory cannot pull from a holder without allowance, an attacker's approve never binds a victim, and a failed transferFrom leaves allowance and balance intact. All five probes passed and the scratch directory was removed.
• The project's own 26 tests, including the stateful invariant suite, pass with the README's seed. forge fmt --check is clean.
• The aderyn large-literal lead is a compile-time constant equal to 1e27 and not a defect.

One finding, low, outside the assigned area. The repository's documented integrity check fails. Running sha256sum --check DEPENDENCIES.sha256 reports seven forge-std files as FAILED, while DEPENDENCIES.md states the sources are unmodified upstream. The recorded hashes match upstream v1.9.7 exactly. The committed copies were re-wrapped by a formatter and are identical once whitespace is stripped. Production code is unaffected since forge-std is test-only, but the provenance claim and verification step in the repository are false as committed.

Not executed. The supplied protected launch test needs v4-core and LaunchLiquidity, which are absent from this tree, so the pool seed and swap flows were verified by reading the transfer code rather than by running a swap.

The review is complete. The findings file is valid JSON and the working tree shows no tracked-file changes (the findings file and test/scratch/ are git-ignored).

Result: the math, boundary and numerical-gap area holds with no defects. The token is 17 lines over unmodified OpenZeppelin v5.0.2 ERC20. There is no division, multiplication, scaling, cast or external call in any value-moving path, so the three guides' failure modes have nothing to attach to. I traced each entry point:

• Supply constant. 1_000_000_000 * 10 ** 18 is a compile-time constant equal to exactly 1e27, decimals() is 18, and the value sits far below the uint128 and int128 limits that Uniswap v4 liquidity and deltas use. The aderyn large-literal lead is style only.
• transfer / transferFrom. The unchecked subtractions in _update and _spendAllowance are guarded by explicit less-than checks. I tested 1 wei, exact balance, balance plus one, self-transfer, max and max-minus-one allowances, and a zero-value transferFrom from the zero address, which reverts rather than minting.
• Invariant. Sum of balances equals total supply exactly, with no rounding to drift. The project's fuzz and invariant suites pass, as do my six scratch confirmation tests. The 10/80/10 launch split of 1e27 divides with zero remainder.
• Boundary surface. No payable path, no sentinel branches, no bytes decoding. The reachable-opcode scan from the protected floor passes.

One info-level note outside my area is recorded in .imd-findings.json. sha256sum --check DEPENDENCIES.sha256 fails on seven forge-std files even though DEPENDENCIES.md calls them unmodified upstream. The recorded hashes match the real v1.9.7 files, which I re-downloaded. The tree's copies differ only by forge fmt line reflows, so someone ran the formatter over lib/. Test-only files are affected and the production OpenZeppelin closure still matches, so the token bytecode is unaffected. The fix is to restore the seven files byte-for-byte or regenerate the hash file and amend the note.

Coverage: all three listed entry points plus four invariant rows are marked holds. No entry point was left unreached.

The review is complete and .imd-findings.json holds the result. The working tree is otherwise clean.

Outcome: no defect in the token code. The three state-changing entry points, approve, transfer and transferFrom, all hold. One info-level provenance inconsistency is reported.

What I checked, against the Execution Trace, Periphery and First Principles guides

• Token source. src/SoothToken.sol is 17 lines: OpenZeppelin ERC20 plus a constructor that mints exactly 10^27 base units to the deployer. No overrides, no owner, no args, no external calls.
• Periphery. The five vendored OpenZeppelin files are byte-identical to upstream v5.0.2, confirmed by fetching the tagged files and diffing.
• Compiled ABI. Only the ten ERC-20 functions plus a constant getter. No fallback, receive or payable path. Ether sent with any call is refused.
• Floor replica. I wrote and ran a scratch test reproducing what the protected floor checks that can run without v4-core: CREATE2 deployment from a factory-like contract, the factory holding the whole supply, launch flows arriving whole, all 22 admin selectors reverting from both a stranger and the factory, holder balances untouchable without approval, and the protected opcode reachability scan on the runtime bytecode. All ten passed, then I deleted the scratch file.
• Existing suite. Build is clean and all 26 project tests pass with the documented fuzz seed.

Finding (info). DEPENDENCIES.md says both vendored dependencies are unmodified and tells a verifier to run the recorded checksum file. Seven forge-std files were reformatted, so that command reports 7 failures. Stripping whitespace, the files match upstream v1.9.7 exactly, and forge-std is test-only, so there is no production impact.

Coverage record. Eleven rows: the three entry points hold, plus rows for the constructor mint, metadata, the absence of any privileged surface, the bytecode scan, the OpenZeppelin base, the owners check and the forge-std record. The one row marked unreached is the protected seed-and-swap test, since v4-core and the launch environment inputs are not in this tree. The transfer-level analogue was verified instead.

The review is complete and written to .imd-findings.json. The working tree is otherwise untouched apart from my scratch test under test/scratch/, which is gitignored and not kept.

Outcome: one low-severity finding, no defects in the token itself.

What I verified

• The token is a 17-line plain OpenZeppelin ERC20 with no overrides. Its ABI exposes only approve, transfer and transferFrom as state-changing functions.
• The vendored ERC20.sol hashes to the same value as the file fetched from the OpenZeppelin v5.0.2 tag, so the inherited code is genuine upstream.
• I traced all three entry points through the upstream _transfer, _update, _approve and _spendAllowance bodies and marked each holds.
• A scratch test mirrored the launch floor: CREATE2 deployment from a factory stand-in, exact supply and decimals, whole transfers along the swarm path, twenty-two admin and freeze selectors rejected from both a stranger and the factory, and a reachable-opcode scan with no DELEGATECALL, CALLCODE or SELFDESTRUCT. All four scratch tests and the project's 45 shipped tests pass.
• Creation and runtime bytecode are far under the deployment limits, and launch.json matches the code: empty constructor args, supply of 10^27 minor units, 18 decimals, contract name within 32 characters.

The finding I kept

All four specialists reported the same root cause, which I merged into one low finding. The documented command sha256sum --check DEPENDENCIES.sha256 fails on the committed tree. Seven forge-std files were reformatted after the hashes were recorded. I confirmed every recorded hash is the real v1.9.7 upstream value and every vendored copy is byte-identical to upstream once whitespace is stripped. Production code is unaffected since forge-std is test-only, but the repository's own provenance claim and verification step are false as shipped. The fix is either to restore the seven files byte-for-byte or to regenerate the hash record and amend the claim.

Leads dropped

The aderyn large-numeric-literal line points at the supply constant, which is written with digit separators and equals the manifest supply exactly. Nothing to report there.