Hi Michael, Your proposal won’t save any energy because it does nothing to decrease the budget available to mine a block (being the block reward).
Even if it were technically possible to find a way for nodes to somehow reach consensus on a hash that gets generated after 9 minutes, all it achieves is that miners will be expending the entire budget given to them in the form of the block reward within a single minute on average. Also please realize that the energy expenditure of Bitcoin is a fundamental part of its design. An attacker has no other option than to expend as much as half of all the miners together do in order for a sustained 51% attack to be successful, making such attack uneconomical. Zac On Sat, 15 May 2021 at 23:57, Michael Fuhrmann via bitcoin-dev < bitcoin-dev@lists.linuxfoundation.org> wrote: > Hello, > > Bitcoin should create blocks every 10 minutes in average. So why do > miners need to mine the 9 minutes after the last block was found? It's > not necessary. > > Problem: How to prevent "pre-mining" in the 9 minutes time window? > > Possible ideas for discussion: > > - (maybe most difficult) global network timer sending a salted hash time > code after 9 minutes. this enables validation by nodes. > > - (easy attempt) mining jobs before 9 minutes have a 10 (or 100 or just > high enough) times higher difficulty. so everyone can mine any time but > before to 9 minutes are up there will be a too high downside. It is more > efficient to wait then paying high bills. The bitcoin will get a "puls". > > > I dont think I see all problems behind these ideas but if there is a > working solution to do so then the energy fud will find it's end. Saving > energy without loosing rosbustness. > > > > :) > _______________________________________________ > bitcoin-dev mailing list > bitcoin-dev@lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev >
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