Skip to main content
Wallet Address · ~5 min · ETH · ERC-20 · OP · DeFi · India · 100+ countries

​
What’s covered

ETH and ERC-20

ETH and ERC-20 transfers on Optimism.

OP and DeFi

OP token activity and DeFi transactions on Optimism.

​
Before you start

Optimism wallet address

Your public Optimism wallet address (starts with 0x). Never your private key or seed phrase.

KoinX account

Free account — no credit card needed.

​
Connect Optimism to KoinX

1

Open KoinX Integrations

Log in to app.koinx.com → Integrations → Add Integration.
2

Select Optimism

Search for Optimism in the integrations list and select it.
3

Enter your public wallet address

Paste your public Optimism wallet address into the address field, then click Connect.
KoinX only requires your public wallet address. Never enter your private key or seed phrase.
4

Wait for sync to complete

KoinX fetches all on-chain Optimism transactions. Once sync completes, your entire Optimism history is in KoinX.
Done. KoinX has your complete Optimism transaction history.
Head to Tax Reports to generate your crypto tax report.

​
Frequently asked questions

Yes — KoinX supports Optimism integration including ETH and ERC-20 transfers, OP token activity, and DeFi transactions.
Yes — Optimism uses the same address format as Ethereum (0x…). Your Optimism and Ethereum addresses are identical but exist on separate chains.
Yes — add each wallet address separately under the Optimism integration.
Yes — KoinX fetches your complete on-chain history. Contact KoinX support if you have more than 30,000 transactions.
Airdrop transactions are classified as income. Review them in the Transactions view and adjust the classification if needed.

​
Verify your Optimism transactions

1

Navigate to the Optimism integration

Go to Integrations → Optimism in KoinX.
2

Verify transactions are present

Confirm ETH, OP token, and DeFi transactions are listed.
3

Review unclassified transactions

Click on any unclassified items to assign the correct category.
4

Confirm portfolio reflects Optimism holdings

Check Portfolio to confirm assets appear correctly.
The Optimism integration page shows your wallet address, transaction count, and last-synced timestamp.
Verify the wallet address and refresh the sync. Contact KoinX support if the mismatch persists.
Click on each unclassified transaction and assign the correct category.

​
Troubleshooting

Why this happens: Incorrect wallet address or sync still in progress.Fix: Verify the address under Integrations → Optimism. Remove and re-add if wrong.
Why this happens: High DeFi transaction volume on Optimism.Fix: Wait up to 10 minutes. Remove and reconnect if not resolved.
Why this happens: Complex DeFi protocol structures.Fix: Re-sync and manually classify remaining unclassified transactions.
Why this happens: Temporary node connection issue.Fix: Click Reconnect or remove and re-add the wallet.
No — KoinX deduplicates automatically.

Ethereum

Connect your Ethereum mainnet wallet.

Arbitrum

Connect your Arbitrum wallet.

Base

Connect your Base wallet.

Polygon

Connect your Polygon wallet.

Ready to generate your Optimism crypto tax report?

Turn your Optimism data into an audit-ready crypto tax report.
Last modified on June 18, 2026