The answer
A rollup's long-term verification and recovery depend on its state commitments and archival/data-availability design. The Ethereum protocol does not promise permanent blob storage by ordinary nodes.
What to do next
Check that rollup's data retention and independent archival arrangements before relying on historic reconstruction.
ethereum.org — Wallet and account documentation
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Kraken crypto exchange
A crypto exchange to compare for supported assets and networks; not a repair for a failed transfer or permission issue.
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