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From: Tomas <tomas@tomasvdw.nl>
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Subject: [bitcoin-dev] Non-confirming block signalling
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I propose a method to mark blocks to indicate that they were generated
without verifying the previous block. This can be done by using a bit of
the version field.

This would counter the reduction of security caused by what is known as
"SPV-mining".

The BIP is here:
https://github.com/tomasvdw/bips/blob/master/bip-non-confirming-block-signalling.mediawiki

Tomas
bitcrust