Summary
Witnet is not deployed on Blast, Linea, ZkSync, Zerion, so draws will not be possible there. Vaults can still be deployed and yield earned, so it will fail when trying to start or complete draws.
Vulnerability Detail
The sponsor intends to know concerns when deploying the protocol to the list of blockchains in the readme.
We're interested to know if there will be any issues deploying the code as-is to any of these chains
One of these issues is that Witnet is not supported on Blast, Linea, ZkSync or Zerion, so an alternative rng source must be used.
Prize vaults may still be deployed, accruing yield and sending it to the prize pool, but the prize pool will not be able to award draws and will only refund users when it shutdowns.
Impact
DoSed yield until the prize pool shutdown mechanism starts after the timeout.
Code Snippet
https://github.com/sherlock-audit/2024-05-pooltogether/blob/main/pt-v5-prize-pool/src/PrizePool.sol#L938 https://docs.witnet.io/smart-contracts/supported-chains
Tool used
Manual Review
Vscode
Recommendation
Use an alternative RNG source on the non supported chains.