回复：比特币看门狗服务
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没错，可能会有人使用拨号调制解调器或卫星天线上网。更少见的是，有人既拥有这种连接，又拥有发生中断的有线互联网；但如果受影响的人群足够大，在一百万人中肯定会有一个多线接入的极客。
ISP 网络中断只会影响你所在的本地区域。如果你仍能与所在区域的其他地方通信，那么这个区域可能只占全世界的 1/1000 或更少。在这个分区内生成一个区块要花上几个小时。
我赞成监测收到区块的频率是否下降得过慢这一方案。它能涵盖很多种可能情况。
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True, there would probably be someone with a dial-up modem or satellite dish internet. Rarer would be someone who has both that and the wired internet that has the outage, but if it's a big enough segment to matter, out of a million people there's bound to be a multi-home geek.
ISP network cuts are just your local area. If you still have communication with the rest of your area, it would probably be something like 1/1000 of the world or less. Block generation in the segment would take several hours per block.
I favour the plan to monitor if the frequency of blocks received drops too slow. That covers a large range of possibilities.