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Independent security review: source audit + on-chain state verification - #48

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utkutugrul wants to merge 4 commits into
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audit/claude-followup-2026-08-19
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Independent security review: source audit + on-chain state verification#48
utkutugrul wants to merge 4 commits into
mainfrom
audit/claude-followup-2026-08-19

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Summary

Fourth-pass independent security review (after 2 Cantina + 1 Spearbit), plus a companion on-chain state verification.

  • audit/audit.md — source-code review: full toolchain re-verification (Slither, Semgrep, Echidna, Medusa, Halmos), stateful fuzzing, and a fresh look at the faucets and deployment scripts. No Critical/High/Medium findings; all prior audit fixes independently confirmed in place.
  • audit/audit-2-onchain.md — on-chain verification that the live deployed contracts (mainnet: Ethereum/Base/Polygon; testnet: ETH Sepolia/Base Sepolia, Aug 18 2026 deployment) actually match what the source and deploy scripts intend: roles, ownership, proxy implementations, cross-contract wiring, bytecode consistency. One Low finding (LegacyTelcoinFaucet on testnet still owned by a stale, unrelated Safe instead of the current governance Safe) and one informational item (apparent same-address/different-bytecode cases across chains, byte-diffed and traced to legitimate per-chain immutables, not a backdoor).

Test plan

  • Security team review of both reports
  • Confirm/triage the Low finding in audit-2-onchain.md §3.1 (stale faucet owner)
  • No code changes in this PR — documentation only

Fourth-pass review (after 2 Cantina + 1 Spearbit) covering full toolchain
re-verification, stateful fuzzing (Echidna + Medusa), symbolic execution
(Halmos, substituting for an unmaintainable Manticore), and a fresh look
at the faucets and deployment scripts that fell outside prior scope.

No Critical/High/Medium findings. All prior audit fixes independently
verified in place. 100% test coverage confirmed on every in-scope contract.
…chain.md

Smoke-tested: bash -n clean, shellcheck clean, full run 95 pass / 0 fail / 2 known-finding warnings, exit code reflects pass/fail.
…ng rationale

Every PASS line now prints the on-chain value that satisfied it (address,
role member, boolean), not just the check label. Also expanded the header
comment to spell out why this script exists: catching front-run
initialization / role grabs on the CREATE2/CREATE3 + separate-initializer
deploy pattern, not just formatting drift.

Re-smoke-tested: bash -n clean, shellcheck clean, 95 pass / 0 fail / 2
known-finding warnings, exit code 0.
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