> > the logger can still sell it, it just may not. > That’s wrong. Data protection legislation expressly forbids I'm sorry, I assume that English is not your

> > the logger can still sell it, it just may not. > That’s wrong. Data protection legislation expressly forbids I'm sorry, I assume that English is not your first language. 'Can' means 'is able to'; 'may' means 'is allowed to.' The GDPR does not allow selling something, but it's still perfectly possible for someone to do so. People break the law all the time. I raised the issue of can vs. may because it's germane to the issue of immutability. It is possible to build a system in which it is mathematically impossible (within arbitrarily-determined limits) to alter data; it is not possible to design a system in which it is possible to prevent someone from telling someone else something he knows. It's odd to me that the GDPR bans the former, desirable system.