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This guide explains how to access transaction history between 23 June 2021 and the final regenesis. Because of our final regenesis on 11 November 2021, older transactions are not part of the current blockchain and do not appear on Etherscan.
Event and transaction-status data from January to July 2021 was partially lost and cannot be fully recovered. See lost pre-regenesis data for what is missing, why, and the impact.

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Dune access

You can use a query on Dune Analytics, similar to this query. You have to log on with a Dune account, but their free tier is sufficient.
1

Browse to the [OVM1.0 User Address Transactions](https://dune.com/optimismfnd/OVM1.0-User-Address-Transactions) Dashboard on Dune.

2

Enter the address you wish to search in the `Address` text box in the top left.

3

Run the query (This requires log in. A free Dune account is sufficient).

Alternatively, to run custom queries in Dune, you can use the optimism_legacy_ovm1 schema defined in Dune Docs here.