> giving people the ability to voluntarily give "viewing keys" to law enforcement that prove which transactions they actually send/received That's not a good t

> giving people the ability to voluntarily give "viewing keys" to law enforcement that prove which transactions they actually send/received That's not a good thing. The fifth amendment becomes weaker over time; and may not apply in locales outside the US. LE can easily coerce you to reveal your viewing keys, and assume you are guilty if you don't. That would be a bug, not a feature. See recent discussion proposing that google make its expired DKIM keys publicly available.