I think there's a shitcoin startup working on trust less bug bounty adjudication (eth based smart contract stuff).
I'm also designing a general purpose Bitcoin dispute resolution protocol that plugs into FediMint. https://github.com/fedimint/fedimint/discussions/1614. Bounties could be a good simple first use case.
I suppose a simple escrow system for bounties could be designed (maybe with FediMint, or dlc) that uses third party auditors to determine whether conditions of bounty are met and releases funds upon final determination.