3 ms·

Definitely it was a good read, but let me just focus on the main point. It is true that Blockchain technology has been thought as a replacement of a trusted th

Definitely it was a good read, but let me just focus on the main point. It is true that Blockchain technology has been thought as a replacement of a trusted third party like a notary or central register, but usually those are public registries: household ownerships, public offers... And those registries are usually exceptions or are treated in a different way (and usually they are explicitly regulated by each country). A few of them are even public, like the defaulters list in Spain. Also, it is quite naive to think that an European citizen can erase "any personal data", that could be quite convenient to erase your fresh new mortgage or obligations. You are only allowed to ask for irrelevant information to be removed not for specific business related log even if they have your personal data in them.

amelius 9y ago
> that could be quite convenient to erase your fresh new mortgage or obligations. But in some cases it could happen that this data has to be erased.
GlitchMr 9y ago
Even in case of mortgages, you need to be prepared for requests. At least where I live, it's legally allowed to remove all information about a loan once you paid the entire cost of it.
- professorTuring 9y ago
  I am not an expert on Spanish regulation, but I can tell you that sometimes the regulator oblige enterprises to store this records for long times (eventually it will expire). Public records are store forever (unless broken)... =), at least, up to date.
Arnt 9y ago
I don't see the problem. The GDPR allows you to keep what you need. For a blockchain, verification is a need, provided that you need verification. You can easily argue that you need verification of the most recent 2, 4, 256, 131072 blocks. Some number. All of the blocks for which you have some vaguely reasonable business need to verify, rounded up a bit perhaps. As for really old blocks, do you need those? Why? I realise you can't follow the blockchain all the way back and verify all the way back without them, but if you're a business (or any kind of organisation covered by the GDPR) why do you need to follow the blockchain all the way back?

amelius 9y ago

> that could be quite convenient to erase your fresh new mortgage or obligations. But in some cases it could happen that this data has to be erased.

GlitchMr 9y ago

Even in case of mortgages, you need to be prepared for requests. At least where I live, it's legally allowed to remove all information about a loan once you paid the entire cost of it.

professorTuring 9y ago
I am not an expert on Spanish regulation, but I can tell you that sometimes the regulator oblige enterprises to store this records for long times (eventually it will expire). Public records are store forever (unless broken)... =), at least, up to date.

Arnt 9y ago

I don't see the problem. The GDPR allows you to keep what you need. For a blockchain, verification is a need, provided that you need verification. You can easily argue that you need verification of the most recent 2, 4, 256, 131072 blocks. Some number. All of the blocks for which you have some vaguely reasonable business need to verify, rounded up a bit perhaps. As for really old blocks, do you need those? Why? I realise you can't follow the blockchain all the way back and verify all the way back without them, but if you're a business (or any kind of organisation covered by the GDPR) why do you need to follow the blockchain all the way back?