[Proposal] Distributing Additional Rewards to P-Chain Delegators Using a C-Chain Contract

[toran777]

I’m looking for a way to distribute extra rewards to users who delegate on the P-Chain. However, I want to handle both the collection and distribution of these rewards on the C-Chain for efficiency and flexibility.
A smart contract on the C-Chain holds these funds. Delegators can claim based on how much and how long they have staked on the P-Chain.

Questions

1. How do I reliably map a P-Chain delegator to a specific C-Chain address for claiming rewards?
2. How can I periodically calculate how much each delegator should get without incurring high gas fees?
3. Are there recommended approaches to distribute rewards efficiently and transparently?
4. I’d rather not send a separate P-Chain transaction to each delegator if possible. What’s the simplest strategy to keep everything on the C-Chain once the rewards are there?