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From: Rusty Russell <rusty@rustcorp.com.au>
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Subject: [Bitcoin-development] Increasing regularity of block times?
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Hi all,

        I've been toying with an algorithm to place a ceiling on
confirmation latency by allowing weaker blocks after a certain time.
Hope this isn't noise, but thought someone must have considered this
before, or know of flaws in the scheme?

Gory details:
http://rustyrussell.github.io/pettycoin/2014/10/30/More-Regular-Block-Times.html

Thanks,
Rusty.