# RedStone audit contest Cantina · Oracle · 24th September 2024 · #1 A public audit contest on Cantina (oracle), completed on 24th September 2024. 0xSimao placed #1. His findings from it are not published individually. ## What RedStone is RedStone is an oracle ecosystem delivering frequently updated, diverse data feeds to smart contracts across chains. It puts data on-chain differently from a push oracle: signed data packages ride the user's own transaction calldata and are verified on the fly, instead of living in expensive EVM storage. ## Scope The on-chain suite: the consumer base contracts verifying signed data packages attached to calldata, and the multi-feed adapters. ## The contest [View the contest page](https://cantina.xyz/competitions/8337db39-e04e-470d-8090-0cfb9a7ec2dd)