Learn ERC‑20 Approvals: How to Inspect & Revoke with Etherscan: trace transactions, decode logs/events, verify contracts, inspect gas and automate with the API — a…
Overview
This article explains ERC‑20 Approvals: How to Inspect & Revoke in Etherscan. You’ll get a reliable workflow, requirements and a checklist to avoid common mistakes.
Requirements
- Tx/hash/address or ENS to inspect.
- Verified contract/ABI when decoding.
- Awareness of rate limits if using API.
Step-by-step
- Open the page for your tx/address/contract.
- Check status, gas used and logs.
- Decode inputs/outputs with ABI.
- Bookmark/export results for evidence.
Safety & pitfalls
- Never sign from explorer pages; they’re read‑only.
- Beware of spoofed token pages and airdrop scams.
- Logs are not state — cross‑check if needed.
Troubleshooting
- Missing logs? Check reorgs or wrong chain.
- Verification failed? Match compiler/optimizer/args.
- API throttling? Add delays and paginate.
FAQ
Is this financial advice? No. This is educational guidance for Etherscan. Verify with official sources before acting.
Can explorers be wrong? Data reflects chain state; indexing can lag. Cross‑verify when it matters.
Next steps
Apply the workflow to new contracts and datasets, keep notes and export evidence for reports.