Smart Contract Analysis Statement

Re-audit Scope

This statement replaces the one issued on 28 August 2026 and covers the faucet contract as it stands at the pinned commit. The contract grew from two hundred and sixty eight lines to three hundred and thirty eight, with eighty two lines changed. All five findings from the first round were re-verified against the new source. No new findings are recorded.

Contract Analysis

The faucet hands out test HCOW and test USDT on BNB Chain testnet, one claim per address per day, so that a person can actually try bonding and claiming rather than only looking at a dashboard. It dispenses stand-in tokens which have no value. There is no mint path of any kind, so the faucet can only give away what was put into it and a defect here cannot inflate anything. It does not dispense gas, which is the right choice, because calling the claim function already requires gas and a faucet that paid for gas could never be reached by the person who needs it.

Two changes since the first round. The status view now reports the two amounts the caller would actually receive at that moment, alongside the count of complete allowances remaining, so an interface can distinguish the two rather than disabling a button on a figure the contract would have honoured. And ownership transfer is now two step with an explicit cancel, matching the other five contracts.

Ownership Privileges

The owner holds unrestricted control over the faucet balance, which is the correct design for a faucet that needs to recover tokens sent to it by mistake. The owner can:

• Withdraw any token, in any amount, to any address
• Set the two drip amounts, which cannot be set to zero
• Reopen the global claim ceiling before its interval is up, which cannot be called when nothing has been claimed
• Nominate a successor owner, who must accept, and withdraw that nomination

Restricting the withdrawal would achieve nothing while the drip amounts remain owner-settable, so the trust is stated in the material testers read rather than pretended away. Nothing of value is behind it.

Security Features

• No mint path exists, so the faucet cannot inflate the stand-in tokens
• The claim gate requires the caller to be the transaction origin and to have no code. Neither half is sufficient alone: code length is zero during a constructor, and the origin check is what closes deploying and claiming in one call. The reasoning behind this was corrected since the first round and is now accurate about the delegation mechanism that went live on the target chain: a delegated account is the origin of its own transaction and has code, so the two are no longer equivalent and the code length check is the load bearing half. We confirmed these are the only two uses of either primitive anywhere in either repository
• Every piece of state is written before either transfer, so reentrancy is structurally impossible, and a token calling back would itself fail the origin check
• The two token amounts are decided independently, so if one side is exhausted the claim still succeeds on the other. The cooldown is charged either way, which is correct: charging only on a full payout would remove the cooldown entirely in the state this faucet actually lives in, where one side running short is the steady state rather than an edge case
• The shortfall comparison used to name which side is worse off cannot underflow, because reaching it requires both balances to be short
• Neither drip amount can be set to zero, which also protects the divisions in the status view

Findings Summary

All five first-round findings were informational and none has produced a new one. Four are closed and one is acknowledged.

The acknowledged item is the global claim ceiling, which fresh addresses can capture as readily as genuine testers, converting a fast drain into a lockout that outlasts a refill. On a testnet faucet dispensing valueless tokens that is the documented rate limit behaving as intended, and the signed voucher gate we described should stay unimplemented while the campaign it would serve does not exist. The two observations worth keeping are now written into the source, so that nobody copying this pattern to a value-bearing deployment inherits it without also seeing the analysis: the ceiling converts a drain into a lockout, and the interval schedule is set by whoever claims first. The owner-only interval reset is a reasonable answer to the lockout without adding a signature scheme.

The two inaccuracies the first round found in the contract's own documentation are corrected, and both corrections are worth noting because they are the kind that usually go unmade. The withdrawal function's description said it recovers anything sent to the contract, which was untrue of native currency; it now says tokens only and records that native currency cannot arrive through an ordinary transfer but can be forced in, that anything arriving that way stays, and that nothing in the contract reads its own balance so it has no effect on behaviour. We checked all three statements against the source and all three hold. And the comment justifying the caller restriction predated the delegation mechanism and read as though caller equal to transaction origin means the caller is an ordinary account; it no longer says that.

Note - This Audit report consists of a security analysis of the HCOWFaucet smart contract. This contract is testnet only and dispenses stand-in tokens with no value. It should never be deployed alongside the real HCOW token. We recommend investors do their own research before investing.