Partly checked

0xC451Bb8e4A40f5753E3AFf91226cC4580133C758

0xC451Bb8e4A40f5753E3AFf91226cC4580133C758Monad mainnet

16 of 30 properties passed and none failed at block 111,253,100. 14 could not be exercised.

Found by the watcher at its first Deposit event in block 111,253,080, 2026-10-07 06:32 UTC. No factory the watcher follows announced it. It was not on the hand-made list the board started from.

Request a re-checkRuns the same 30 properties at the latest block and attests the new report.

What the watcher saw

Every event the watcher recorded for this vault, newest first. Each check is a statement about one block; a re-check with the same outcome is recorded here without a new attestation.

06:35:1510-07First result
Partly checked
16 pass, 0 fail, 12 inconclusive, 2 not applicable.
06:35:1510-07Checked
Partly checked
16 pass, 0 fail, 12 inconclusive, 2 not applicable at block 111,253,100, 3 min. Report
Why: first Deposit event from an unknown address.
06:32:0510-07Queued
Waiting for a check: first Deposit event from an unknown address.
06:32:0410-07Found
First Deposit event from an unknown address in block 111,253,080 tx 0x77f6ff...5f1be4

JSON: this vault's history

All 30 properties

In report order. Bit i is the bit the registry's passedBitmap and failedBitmap use for that property.

Bit	Property	Result	What was found
a16z/erc4626-tests at ac48546, 26 properties: 16 on EIP-4626 MUST sentences, 10 on SHOULD guidance (the round trips and the allowance checks)
0	`asset`test_assetEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: asset() does not revert
1	`totalAssets`test_totalAssetsEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: totalAssets() does not revert
2	`convertToShares`test_convertToSharesEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: convertToShares gives the same result for any caller
3	`convertToAssets`test_convertToAssetsEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: convertToAssets gives the same result for any caller
4	`maxDeposit`test_maxDepositEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: maxDeposit does not revert
5	`previewDeposit`test_previewDepositEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: deposit mints at least the shares previewDeposit quoted
6	`deposit`test_depositEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: deposit moves assets from the caller, credits shares to the receiver and spends allowance
7	`maxMint`test_maxMintEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: maxMint does not revert
8	`previewMint`test_previewMintEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: mint pulls at most the assets previewMint quoted
9	`mint`test_mintEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: mint moves assets from the caller, credits shares to the receiver and spends allowance
10	`maxWithdraw`test_maxWithdrawEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: maxWithdraw does not revert
11	`previewWithdraw`test_previewWithdrawEIP-4626 MUST	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: withdraw burns at most the shares previewWithdraw quoted Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
12	`withdraw`test_withdrawEIP-4626 MUST	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: withdraw burns owner shares, pays the receiver and spends share allowance Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
13	`withdraw-zero-allowance`test_withdraw_zero_allowanceEIP-4626 SHOULD	Pass	No counterexample in 16 fuzz runs at this block. Checks: withdraw on behalf of an owner without allowance reverts
14	`maxRedeem`test_maxRedeemEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: maxRedeem does not revert
15	`previewRedeem`test_previewRedeemEIP-4626 MUST	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: redeem pays at least the assets previewRedeem quoted Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
16	`redeem`test_redeemEIP-4626 MUST	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: redeem burns owner shares, pays the receiver and spends share allowance Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
17	`redeem-zero-allowance`test_redeem_zero_allowanceEIP-4626 SHOULD	Pass	No counterexample in 16 fuzz runs at this block. Checks: redeem on behalf of an owner without allowance reverts
18	`RT-deposit-redeem`test_RT_deposit_redeemEIP-4626 SHOULD	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: redeem(deposit(a)) returns no more than a Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
19	`RT-deposit-withdraw`test_RT_deposit_withdrawEIP-4626 SHOULD	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: withdraw(a) burns at least the shares deposit(a) minted Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
20	`RT-redeem-deposit`test_RT_redeem_depositEIP-4626 SHOULD	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: deposit(redeem(s)) mints no more than s Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
21	`RT-redeem-mint`test_RT_redeem_mintEIP-4626 SHOULD	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: mint(s) costs at least the assets redeem(s) paid Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
22	`RT-mint-withdraw`test_RT_mint_withdrawEIP-4626 SHOULD	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: withdraw(mint(s)) burns at least s shares Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
23	`RT-mint-redeem`test_RT_mint_redeemEIP-4626 SHOULD	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: redeem(s) pays no more than mint(s) cost Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
24	`RT-withdraw-mint`test_RT_withdraw_mintEIP-4626 SHOULD	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: mint(withdraw(a)) costs at least a Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
25	`RT-withdraw-deposit`test_RT_withdraw_depositEIP-4626 SHOULD	Inconclusive	Never exercised: the vault rejected nearly every amount the fuzzer tried, and forge gave up after 4096 discarded inputs. Checks: deposit(a) mints no more than the shares withdraw(a) burned Raw result reason: `vm.assume` rejected too many inputs (4096 allowed) runs: 0
Specfirst max-honored properties, MIT, each on one EIP-4626 MUST sentence about a max function
26	`sf-maxDeposit-honored`test_sf_maxDeposit_honoredEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: deposit goes through up to min(maxDeposit, 1e6 tokens); when a smaller amount is refused the bound must go through, and refusals are counted (EIP-4626: maxDeposit MUST NOT be higher than what deposit accepts)
27	`sf-maxMint-honored`test_sf_maxMint_honoredEIP-4626 MUST	Pass	No counterexample in 16 fuzz runs at this block. Checks: mint goes through up to min(maxMint, shares of 1e6 tokens); when a smaller amount is refused the bound must go through, and refusals are counted (EIP-4626: maxMint MUST NOT be higher than what mint accepts)
28	`sf-maxWithdraw-honored`test_sf_maxWithdraw_honoredEIP-4626 MUST	Not applicable	Nothing to honor: maxWithdraw returned 0 for every test user. EIP-4626 allows a max to underestimate, so there was no advertised amount to hold the vault to. Checks: withdraw goes through up to maxWithdraw; when a smaller amount is refused maxWithdraw must go through, and refusals are counted (EIP-4626: maxWithdraw MUST NOT be higher than what withdraw accepts, and MUST be 0 when withdrawals are disabled) Raw result reason: maxWithdraw returned 0 for every test user; there is no max value to honor (EIP-4626 allows underestimating) runs: 0
29	`sf-maxRedeem-honored`test_sf_maxRedeem_honoredEIP-4626 MUST	Not applicable	Nothing to honor: maxRedeem returned 0 for every test user. EIP-4626 allows a max to underestimate, so there was no advertised amount to hold the vault to. Checks: redeem goes through up to maxRedeem; when a smaller amount is refused maxRedeem must go through, and refusals are counted (EIP-4626: maxRedeem MUST NOT be higher than what redeem accepts, and MUST be 0 when redemptions are disabled) Raw result reason: maxRedeem returned 0 for every test user; there is no max value to honor (EIP-4626 allows underestimating) runs: 0

Onchain attestation

Not attested yet.

CheckAttestationRegistry 0x3754...daF7 on Monad testnet holds no erc4626 attestation for this vault as of 2026-10-08.

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Replay this check

specfirst check 0xC451Bb8e4A40f5753E3AFf91226cC4580133C758 \
  --standard erc4626 \
  --block 111253100 \
  --runs 16 \
  --seed 0x025efbe33f45c06ec74f3647d20e66bf388c348063b812f628739cdb672b20c6

Same block, runs and seed. The CLI draws a fresh random sender each run; the seed also salts the 16-user pool.

Report JSON

reportHash 0x4042de...974935 is keccak256 of the report's canonical JSON (RFC 8785), the value the registry stores.

Badge and API

The badge and the JSON read the registry when they are loaded, so they follow new attestations without a rebuild.

[![Specfirst ERC-4626 check](/badge/check/143/0xc451bb8e4a40f5753e3aff91226cc4580133c758.svg)](/v/143/0xc451bb8e4a40f5753e3aff91226cc4580133c758)

JSON API Badge SVG

Implementation

Proxy: eip1167
Implementation: 0x48d9392Db46b00C291a2e29B1aC6C703b57024E2
Implementation key: 0xf6de5707e13ca6f2464a6ffd35ce790a410ed06d3d0adc9940a108116fe7c213
Key from: Implementation behind the proxy: same compiler metadata and same code with immutables masked
Code hash: 0x98945c4cac76da772718e48f71202515bf7101fed9719ae0a9af498348be97ad
Code size: 45 bytes
Same key: 141 other vaults on this board

Run

Block: 111,253,100, Monad mainnet
Seed: 0x025efbe33f45c06ec74f3647d20e66bf388c348063b812f628739cdb672b20c6
Sender: 0x533A3b5229eCB2C18f1A3aF2E358140c90a4173B
Runs: 16 per property
Delta: 0 base units
Forge: forge Version: 1.5.1-Homebrew
forge-std: bf647bd6046f
Reject limit: 4096
Harness: 0xf5d1ee...8d0262
sf properties: 0xd84a08...ac3aca
suiteHash: 0x9912f4...90a2cd
Started: 2026-10-07 06:32 UTC, 188 s
Report: schemaVersion 4

Same implementation

Same code, different vaults. Their results can still differ through parameters, caps and assets.

and 81 more