SN-0657 已核对来源，附原文与上下文。
它实际上一次下载 500 个区块，然后计数器随着区块的验证一块一块地累加。
It does in fact download 500 blocks at a time, then the counter counts one at a time as it verifies the blocks.
让 bitcoin 下载并验证区块的好处是：你不必信任你下载它们的来源。如果你从某个网站下载 blk*.dat 文件，你就得信任那个网站，因为你在未亲自验证的情况下接受了数据。如果是从你自己的另一台电脑上拷贝 blk*.dat，那没问题。
The advantage of letting bitcoin download and verify the blocks is that you do not have to trust the person you're downloading them from. If you downloaded the blk*.dat files from some site, you would have to trust that site, since you would be accepting the data without verifying it yourself. If you're copying blk*.dat from another computer of yours, that should be fine.
你的初始区块下载要花多久？
How long is the initial block download taking for you?
