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@2color 2color commented Dec 11, 2025

What

Verify the merkle proof from the root CID (passed in the input) to the resolved block (the terminal element which is typically a file or folder), e.g. {CID]/mydir/myfile.jpg to ensure that the data is verified.

Why

This ensures that data is fetched trustlessly without trusting the gateway to return the correct data.

This is a follow-up to #40 as noted in #39 (comment)

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@d70-t d70-t left a comment

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Thanks a lot, for fixing this long outstanding issue. The change mostly seems fine, but there seems to be a typo in the car file name.

Co-authored-by: Tobias Kölling <tobi@die70.de>
@d70-t d70-t merged commit 474c142 into fsspec:main Dec 12, 2025
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@2color 2color mentioned this pull request Dec 16, 2025
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2 participants