ERC-20 ALLOWANCE AUDIT
Check Observed ERC-20 Approvals and Allowance Exposure
Use WalletGenome to review the latest approval states it can reconstruct from returned transaction history. It does not query a live allowance or revoke anything.
An approval row is historical evidence. Confirm the current allowance on-chain before acting, and treat unavailable balance or price data as unavailable—not zero.
What the analysis covers
Approval decoding
Decode ERC-20 approve calls to identify spender addresses and distinguish finite from unlimited allowance values.
Spender and age context
Review spender labels, approval age, and observed non-revoked state without treating an old approval as proof that an allowance is still active.
Exposure estimates
Estimate exposure from reconstructed positive balances and available current prices; unknown balances or prices remain unavailable.
Useful for
- Finding observable unlimited ERC-20 approval transactions
- Reviewing spender addresses and approval age
- Separating approval counts from estimated monetary exposure
Important limits
- Historical approval transactions do not always prove that an allowance remains active today.
- Exposure estimates depend on available current balances and prices.
- Users should verify and revoke allowances through a trusted chain-specific tool when action is required.
Frequently asked questions
What is an unlimited token approval?
It is an ERC-20 allowance that authorizes a spender to transfer a very large maximum amount, often used so an application does not need approval before every transaction.
Does an old approval prove the allowance is still active?
Not necessarily. A later transaction may have changed or revoked it, so approval history should be reviewed with current chain state when making a security decision.
Does WalletGenome revoke approvals?
No. WalletGenome is read-only and does not submit transactions. Ethereum wallet authentication, when used, is a login message rather than a transaction.