op-program: Add hint for fast block hash lookup #17449
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mbaxter
reviewed
Sep 15, 2025
Inphi
approved these changes
Sep 16, 2025
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Description
Adds a hint to provide context of historical block hash lookups.
This is a less invasive approach to #16151 because this version uses a higher-level hint, specific to looking up the specific block hash rather than a generic hint that storage proof is required. The advantage is we don't need to rewrite how the lookup is done and can still call the EVM function to perform the lookup rather than reading the storage entry directly.
Tests
Updated unit tests to confirm the hint is emitted.
Metadata
Part of #17416