In general, verification is easy: you observe the chain, and you know, how many nodes are running the lottery, and how many are not supporting it. Then, you can make some statistics, and determine, how many coins should be sent to the users, to keep the lottery running. And as long as there are enough miners, willing to share their fees with the community, the lottery can run indefinitely, and encourage new users to participate in next rounds.
I think I read something about the lottery relying on transaction fee and would reach a threshold before it would be implemented.
What about in a scenario where the fee couldn't meet the threshold wouldn't that reduce engagememt if it becomes continuous?
Again on the payout, I think from my understanding it seems like lottery been triggered relies on the miners
Wouldn't this lead to centralization where the miners can delay payout for their benefit?
Like am always seeing miners in almost every step especially since miners can choose the transaction they include in the blocks
They can pick transactions from the broadcasted Pubkeys
Wouldn't using block hash or some Part of it increase randomness thus reduces miners control?
It looks Good because nothing majorly new or complex is introduced to the blockchain
Since you relied on existing activity like transaction fee and Pubkeys.