We must have a misconception here.
Anti-Bot-Net: Limits "rich kids with too many computers" or a rogue hacker who installed 300 copies of biblepay in the school system.
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Earlier when I mentioned CPIDs, I used them because you have to *work* hard to build up RAC and then sign the cpid - so you truly are limiting the reward to a worthy recipient (similar to how we are rewarding through minimum UTXOs now - you must prove you have a stake in BBP to mine).
Please think about it, and if you have a full method to limit rewards to single entities feel free to post; but I dont believe one exists in *open source software*; Manna uses telephone numbers (SMS codes) - but that can be hacked by buying multiple phone cards etc.
If you think ABN is better to keep in BiblePay, I have no objection. I personally like ABN. Weren't you just considering removing it though? I offered a potential alternative. Matching last 2 digit of block hash helps distribute the mining rewards which has a similar result to ABN without the staking requirements.
BOINC w/ CPID is a great alternative as well (since the oracle issue is minimal). If a CPID wins a block, maybe they can't win a block for the next 10 blocks? What's your reasoning for 16 tiers? Why not 10, or 7 tiers? I used to think science & BiblePay don't mix, but I've changed my mind after meeting oncoapop3. I see science and Christianity as a powerful and peaceful combination.