Research: can Spark observe PDP deals?

[bajtos]

Are we getting the right data for Spark (etc) from the pdp contract(s), or is ddo sufficient? Timebox to 4 hours.

[bajtos]

Docs:
https://www.notion.so/filecoindev/Proof-of-Data-Possession-4960f7827f074748a7e0227381455ad2

Source code:
https://github.com/FILCAT/pdp

PDP emits events when a new data root of a deal is added:
https://github.com/FILCAT/pdp/blob/14fd1c9225471aab4a517abdaf4791c8d9963fd4/contracts/src/PDPVerifier.sol#L302

We can also get the states to get info about proofsets.

Slack thread in #fil-pdp:
https://space-meridian.slack.com/archives/C0717TGU7V2/p1729584139972069

[bajtos]

Created a GH issue with my findings:

• Allow Spark to observe added/removed roots FilOzone/pdp#79

[bajtos]

Posted a question in the Storacha slack channel:

https://filecoinproject.slack.com/archives/C06SFMDMUAU/p1732807012962139

[bajtos]

Notes from my research:
https://docs.google.com/document/d/1sjae2qFxNNFHKZCBL5mmJRh7UFAHaq0ZuVkSmt_d2dE/edit?tab=t.0