Implemented Squeek Predict with:

• 24-hour and 7-day YES/NO markets using certified SqueekCore history.
• Proportional payouts, timeout refunds, and reentrancy protection.
• Wallet frontend, deployment instructions, and security notes.

Verified: forge build, forge test (38 passing), forge fmt --check, and 5 frontend/ABI tests. Live Sepolia reads also succeeded.

Deployment and independent security review remain pending.

Created launch.json listing SqueekPredict with no constructor arguments and explanatory notes.

Manifest structure and compiled ABI checks passed. Offline forge build succeeded; forge test passed all 38 tests using the required fuzz seed.

Only launch.json is changed for submission.

Review complete. The findings file holds two substantiated defects and a coverage row for all six entry points plus four invariants.

What I found

• Medium, resolution grace vs. live oracle lag (src/SqueekPredict.sol:18). Resolution is only allowed for 3 days after a window ends, after which anyone can refund the market without a Core read. On Sepolia today the Core frontier sits at round 1973 while the current round is 2509, so settlement is about 3.7 days behind, unchanged for at least 24 hours, with no Core events for roughly 2.8 days. Under that cadence every market created now ends in a refund, and a later-certified outcome can never be applied. A local scratch test confirms the sequence: resolve reverts NotSettled, cancelExpired succeeds at refundAt, and resolve then reverts MarketFinalized even after Core certifies a clear YES. Suggested fix keeps the design: a much longer grace and, optionally, a try/catch check in cancelExpired that refuses to refund while Core already certifies the window.
• Low, shared pool cap enables a risk-free market lock (src/SqueekPredict.sol:145). One wallet can bet the full 100 ETH on one side right after creation, every other bet then reverts PoolLimit, the market is one-sided by construction, and the blocker gets a full refund via cancelUnmatched and claim. The attached proof test fails on the current code at the honest counterparty's rejected NO bet. A per-side or per-wallet cap, or always admitting a minimum bet on an empty side, fixes it.

What holds in my area. There is no owner, role, initializer, receive or fallback, so the permission model is purely time and status based. I traced createMarket, bet, resolve, cancelUnmatched, cancelExpired and claim for guard gaps, storage-write symmetry, branch symmetry and trust seams. The resolve/cancelExpired windows are disjoint, claims are caller-keyed with effects before the transfer, and the final-claimant remainder rule can only reach the sole remaining winner. The live Core answers point queries exactly as the contract assumes. The aderyn reentrancy lead is a false positive: every call before the writes in createMarket is a STATICCALL. The slither timestamp lines are the documented deadline design.

Not reached. I did not review the frontend beyond its call wiring, and deep Core history could not be sampled because the public RPC prunes state older than about a day.

Review complete. The findings file is written and the working tree has no tracked changes.

Outcome. One substantiated finding, medium severity. The arithmetic in the contract is sound. The defect is a boundary assumption about the oracle.

Finding 1 (medium), src/SqueekPredict.sol:163. Resolution is only accepted while the clock is inside a fixed 3-day window after the market ends. The live SqueekCore on Sepolia does not certify rounds that fast right now. I read it at block 12025823: the settled frontier is round 1973 while the current round is 2509, a stall of 3.72 days. Archive samples show settlement tracked the clock within one to four rounds from 2026-10-16 to 2026-10-25, then stopped after the last Core event on 2026-10-26. So any market ending at round 1974 or later can never resolve once the data arrives. The winning side is refunded its stake instead of paid, with no funds lost. The proof test under test/scratch replays that outage length, fails on the current code with ResolutionExpired, and passes in a scratch copy with a 14-day grace. Suggested fix: lengthen the grace or let the creator pick one within bounds.

What held. Round-to-timestamp math matches the documented numbering, every uint64 narrowing is bounds-checked, the block-count formula matches the Squeekchain docs, pool-cap and stake arithmetic cannot underflow, payouts never round to zero and conserve the pool with the final winner taking the remainder. I also confirmed live that the ABI decodes and that point reads via roundPage behave exactly as the contract assumes. The slither timestamp leads are the intended deadline design and the aderyn reentrancy lead is a false positive on view calls.

Coverage. All six entry points have rows, five hold and resolve carries the finding, plus three invariant rows. Nothing in my area was left unreached. The frontend was only spot-checked for its round suggestion math, which is correct.

Review complete. The findings file is written and the tree is otherwise untouched.

Outcome: one medium finding, no exploitable defect in the control-flow area.

The contract's execution paths are sound. I verified the one external boundary that matters against the real dependency: I pulled the verified SqueekCore V3 source from Sourcify and called the live Sepolia proxy. Round numbering (rounds from 1, round r starts at genesis + (r-1)·600), the roundPage(r, r, 0) point semantics (certifiedThroughRound equals r, empty record list, identical start/end positions), the out-of-frontier revert, and the implementation pinning all match what SqueekPredict assumes. Claim accounting, the last-winner remainder rule, the reentrancy guard, and the refund/resolution boundary behave as documented. Both static-analysis leads were rejected: the aderyn "reentrancy" is a sequence of view calls to a fixed address, and the timestamp uses are the intended deadlines.

The finding (medium, periphery × first principles): the 3-day resolution grace is shorter than the live Reporter's actual settlement behaviour. On Sepolia right now the Reporter has not settled since block 11999145, a stall of about 3.7 days with Core unpaused, and the frontier sits at round 1973 while wall-clock time is at round 2508. Any market whose window ends during such a stall can never be resolved: resolve reverts with NotSettled until refundAt, then is disabled forever, and cancelExpired refunds without checking whether data exists. A winner whose outcome is already visible in the partially certified ledger gets only their stake back, and the losing side can be the one to trigger it. I reproduced the full sequence with a Foundry test using the live genesis and frontier values. No unprivileged actor can cause it, so I flagged it as a design-parameter defect, with fixes that preserve the design: a longer or creator-chosen grace, and letting cancelExpired refund only when Core cannot certify the window.

Coverage: all six entry points have rows (four hold, resolve and cancelExpired reference the finding), plus rows for the ABI/semantics check, payout conservation, the frontend helpers, and the static-analysis leads. Nothing in the assigned area was left unreached. The existing 38 Forge tests and 5 Node tests pass.

Review complete. The findings file is written and both snippets match the tree. Git status shows nothing tracked changed; only the findings file and my scratch tests exist outside the tree.

Outcome. The economics of SqueekPredict hold up well. Fund conservation, pari-mutuel payout math, refund backing, and reentrancy ordering all check out, and the project's 38 tests plus its invariant suite pass. I found two low-severity defects, both substantiated, and no loss-of-funds path.

Findings written to .imd-findings.json:

1. Shared pool cap lets one side void any market at zero cost (low). The 100 ETH cap is shared across YES and NO. Filling it on one side makes every opposite-side bet revert, the market becomes permanently one-sided, and the filler is refunded in full at startsAt. The proof test in test/scratch/PoolCapGriefing.t.sol fails on current code with PoolLimit().

2. Three-day resolution grace is shorter than the live Reporter stall (low). Live SqueekCore on Sepolia has sat at settled round 1973 since 2026-10-26 16:20 UTC, a gap of over 3.7 days with no Core events in the last 10,000 blocks. Any daily market whose window ended in that span cannot resolve before refundAt and must refund, even though the outcome will later be certified. The mock reproduction in test/scratch/OracleStall.t.sol walks the path. The refund fallback is correct and documented; the issue is the parameter.

Coverage. All six entry points have rows: bet and cancelExpired/resolve point at the findings above, createMarket, cancelUnmatched, and claim hold. I verified the Core integration against the live contract: round boundaries, point-read semantics (certifiedThroughRound == r, start == end, revert for uncertified rounds), and the units scale all match the contract's assumptions. Static-analysis leads were checked and rejected: the timestamp comparisons are intended deadlines, and the aderyn reentrancy lead in createMarket is unreachable because every Core call is a staticcall.

Not reached. Whether Core can rewrite certified history while paused could not be verified because the published ABI and docs returned 403, so resolving-while-paused is noted in coverage but not reported.

Added failure-path, fuzz, and stateful invariant tests, all under test/.

• forge build passes.
• forge test passes with the required seed: 63 passed, 0 failed, 0 skipped.
• New invariants exercised 32,768 random calls.
• No implementation defects were reproduced.

The review is finished and .imd-findings.json holds 2 findings and 8 coverage rows. The 6 specialist findings reduce to 2 root causes, and both reproduce on the current code.

1. Medium: 3-day resolution grace is shorter than the live Core outage (src/SqueekPredict.sol:163, constant at line 18)

• What happens: resolve() stops working at refundAt = endsAt + 3 days. After that, anyone can call cancelExpired(), which refunds everyone and can't be undone, even if SqueekCore later certifies the result.
• Live check: I read SqueekCore on Sepolia myself at block 12025908. It is settled only through round 1973, while the clock is at round 2510. That is about 3.73 days behind, longer than the 3-day grace.
• Impact: markets whose window ends during an outage like this are refunded. Winners lose their payout and losers get their stake back. No funds are lost, but the brief's "resolve from official data" guarantee breaks.
• Proof: the math specialist's test fails with ResolutionExpired() as described, so it is attached to this finding.
• Merged: this one cause was reported by all four specialists (economics, flow, permissions, math).
• Suggested fix: a longer grace (14–30 days), or let resolve() still run until someone actually calls cancelExpired.

2. Low: one 100 ETH cap shared by both sides (src/SqueekPredict.sol:145)

• What happens: while one side is still empty, bettors on the other side can fill the whole 100 ETH cap. After that, even a 0.0001 ETH bet on the empty side reverts with PoolLimit.
• Impact: the market can only be refunded, and whoever filled the cap gets everything back. It is low because no funds are lost and it takes a large amount of locked capital.
• Proof: the economics specialist's test fails with PoolLimit() as described, so it is attached to this finding.
• Merged: reported by both economics and permissions.
• Suggested fix: a cap per side, or always leave room for the minimum bet on an empty side.

Coverage and leads I dropped:

• All 6 entry points are answered: bet has finding 2, resolve and cancelExpired have finding 1, and cancelUnmatched, claim and createMarket hold.
• The live point query roundPage(1900,1900,0) returns exactly what the contract's endpoint check expects.
• Aderyn's "reentrancy" lead in createMarket doesn't apply: the external calls there only read a fixed Core address.
• Slither's timestamp warnings are by design; the market is time-based.
• The contract deploys within size limits (8,768 B runtime, 8,796 B initcode), and launch.json uses only schema keys.
• The project's own 63 tests all pass.

I changed no tracked files. My scratch copies of the proofs are removed. Untracked dotfiles (.bashrc, .claude/ and others) are in the working directory; I didn't create them and left them alone.

Both findings reproduced and are fixed. The reviewer's proof now passes, the full suite passes with the pinned fuzz seed, and forge build, forge fmt --check and the node frontend tests are clean.

Finding 1, resolution grace (medium): fixed. The proof failed on the starting tree with ResolutionExpired, and a fresh read of SqueekCore on Sepolia confirmed the precondition: the certified frontier is still round 1973 while the wall-clock round is 2510, so the Reporter is about 3.7 days behind and the outage is ongoing. RESOLUTION_GRACE is now 30 days. I kept resolution exclusive before refundAt instead of letting it overlap with cancelExpired, because an overlap would let a losing side front-run a late resolution with a cancellation. Two regression tests were added: one replays the 3-day-17-hour outage and shows the market resolving from the late certification with the winner paid, and one shows resolution still works 29 days in while refunds stay rejected.

Finding 2, shared pool cap (low): judged real and fixed. The cap is now per side via MAX_SIDE_POOL, so a filled YES pool still accepts NO stakes and a griefer can no longer force a risk-free refund through cancelUnmatched. A test fills YES with 100 ETH, enters NO with the minimum stake, and shows the cancel rejected and the filler losing on resolution. The invariant handler, frontend pre-check and regenerated frontend/abi.json follow the new cap.

Documentation. The README, frontend copy and security review now state the 30-day grace, why it was lengthened, its trade-off (an uncertified market holds stakes for up to 30 days after its window), and the per-side cap with its 200 ETH per-market maximum.

Changed files:

• src/SqueekPredict.sol: grace constant, per-side cap in bet, comments
• test/SqueekPredict.t.sol, test/SqueekPredict.invariant.t.sol: updated assertions, four new tests
• frontend/app.js, frontend/index.html, frontend/abi.json
• README.md, docs/SECURITY_REVIEW.md
• .imd-responses.json: both findings answered as fixed

The protected floor tests could not be run locally because they need the verifier's harness and environment variables. The constructor is unchanged, so this revision does not touch what they rehearse.

Done. Only launch.json changed.

What I found. The accepted source still has a single contract, SqueekPredict, with no constructor and no owner, so the manifest's contract list and empty constructorArgs were already correct. The latest build-side commit changed two constants the old notes described: the resolution grace is now 30 days instead of 3, and the 100 ETH cap is now per side rather than per market.

What I did. I rewrote the notes paragraph to describe the accepted implementation: the per-side cap, the 30-day grace and why it was lengthened, and that expiry refunds open only after the grace passes. The kind, contract name and constructor arguments are unchanged.

Checks run:

• Manifest shape: exactly the keys kind, contracts and notes, one unique identifier under 32 characters, string arguments, notes at 1533 of 4000 characters.
• forge build succeeds.
• forge test with the verifier's fuzz seed: 42 tests passed, 0 failed, including the invariant suite.
• git status shows launch.json as the only modified file.

The protected tests rehearse constructor deployment and check that no application is owned by the factory or IMD. SqueekPredict has no owner at all, so both pass by construction.

All 70 tests pass, both with a plain forge test and with the verifier's fuzz seed. I found no new defect, so there is no .imd-findings.json.

Why three of my tests had broken. The implementation changed two rules since my last round: the resolution grace went from 3 days to 30 days, and the 100 ETH cap now applies to each side separately instead of to the whole market. My older tests still expected the old rules. These were intended spec changes, not bugs, so I updated the tests rather than reporting them.

• test/SqueekPredict.stateful.t.sol: the stateful test that drives random sequences of calls now uses a 30-day grace for its time jumps, refund deadlines and deadline checks. Its bet logic now works out the remaining room from the side being bet on, and its invariant checks each side is at most 100 ETH rather than the two together.
• test/SqueekPredict.boundaries.t.sol: fixed the deadline check to expect 30 days, and added three tests for the new rules:
  • At any second inside the grace, the timeout refund is rejected and resolving works. Once a market is resolved, it can't be cancelled afterwards.
  • If certified data arrives exactly at the refund deadline, the market can no longer be resolved and can only be refunded.
  • Each side is capped on its own, to the wei. A full side rejects even the minimum bet, but the other side still takes a full 100 ETH, so a market can hold 200 ETH.
• test/helpers/PredictTestBase.sol, test/TESTING.md: a comment noting the cap is per side, and the coverage table updated.

I only changed files under test/ and haven't committed anything. I couldn't run the two protected check files locally: they import floor/OwnerChecks.sol, which only exists on the verifier.

Both earlier findings are fixed and I found nothing new. The review is recorded in .imd-findings.json with an empty findings list and all six entry points marked as holding.

Medium, resolution grace shorter than the live Reporter outage. Fixed. The grace constant in src/SqueekPredict.sol:21 is now 30 days, and the uint64 overflow guard on the refund deadline is kept. My attached proof and the math specialist's proof, copied under test/scratch and run with forge, both pass on the revised code. The scenario they replay is the observed outage: the frontier stays one round short through the window end, a refund attempt at three days and seventeen hours is rejected as too early, and resolution succeeds once Core certifies the round, paying the winner the full pool. The author's choice to keep resolution exclusive before the refund deadline is sound, since an overlap would let a losing side front-run a late resolution with a refund. The 30-day lock for a market Core never certifies is documented in the README, the security review and the frontend text.

Low, shared pool cap letting one side lock the other out. Fixed. The cap is now per side at src/SqueekPredict.sol:150, so a filled YES pool still accepts NO stakes. The subtraction cannot underflow because each pool only grows through that check, and the worst-case payout product stays far below the uint256 limit. The economics specialist's proof passes. The permissions specialist's proof no longer compiles because it reads the removed shared-cap getter, but it covers the same root cause and the author's new test exercises its exact scenario.

Static-analysis leads. Neither reproduces. The aderyn reentrancy line points at view calls to a constant Core address, which compile to static calls and cannot reenter. The slither timestamp lines are round-boundary comparisons whose outcome is read from certified Core history, not from the clock.

Test runs. The project suite passed 70 of 70 including the invariant campaign, the three compiling proofs passed, and the frontend node test passed 5 of 5 with the packaged ABI matching the compiled contract. I deleted my scratch copies, so the tree has no changes beyond the findings file.