On Sat, May 23, 2020, 8:33 AM other.arkitech
   <[1]other.arkitech@protonmail.com> wrote:

   ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

   On Saturday, May 23, 2020 12:21 PM, Karl <[2]gmkarl@gmail.com> wrote:

   On Sat, May 23, 2020, 8:05 AM other.arkitech
   <[3]other.arkitech@protonmail.com> wrote:

   The solution for this problem doesn't fall into the blockchain
   platform. The platform will delete the information if evidence signed
   by the right private key is presented.

   BSV is a blockchain platform that has been working well for me for this
   purpose of information preservation.

   If you want to protect a piece of information from "rubberhosing" you
   must follow a procedure to safeguard it. for instance :
   1. break down your key into several parts, using the Shamir secret
   sharing squeme.
   2 spread the parts acros a distributed group of people you trust
   3 delete the key so nobody can force you to reveal
   4 the attacker must have to coherce a number of people to reconstruct
   the private key

   It is true "rubberhosing" is usually mentioned in the context of
   secrecy and privacy, but it can also be used to force erasure and
   destruction of information.  In such a case it does not matter whether
   it is encrypted or not: the device that holds it can be destroyed.
   Additionally many can indeed coerce a large number of people.  The
   network would need to preserve the information even if all parties
   purport to want it removed.  Most blockchains have pulled that off,
   although I imagine there are other solutions too.

   storing in a single device is never secure. it must be distributed.
   If you want the info never ever deleted by any means you just destroy
   de private key used to store it.

   It sounds like USPS can store things in this reliable way, spreading
   them among many devices?
   That really seems the biggest value of a blockchain to me.  It also
   attempts to prove when the data was created, as consensus time is
   included in the block confirmation algorithm, which shows that it was
   not fabricated after the fact.

References

   1. mailto:other.arkitech@protonmail.com
   2. mailto:gmkarl@gmail.com
   3. mailto:other.arkitech@protonmail.com