Problems with using Blockchain:

1)  errors in the records which either will a) need to be corrected by a cattle call army of searchers paid less than standard wages; or  b) cemented into the record which will require going back to title insurers for their lawyers to figure out - a lengthy process.

 2)  digital data lifespan: a) with standard care, digital files degrade within 10 years;  b) with very careful storage, digital data left on magnetic media will last about 30 years.  Of course, all the registries and court clerks' files are also impacted by this phenomenon.  Any solution would logically require regular reentering all the date or instituting a program of regular creating backups at regular intervals appropriately spaced out.  And the hardware? Hardware has its own problems. 

3)  security?  Equifax, Marriott (500 million customer files), fb...etc.  See the article cited on the front page of today's SOT about security.

So the realtors, title companies, lawyers, etc. arrogate all the money to themselves and when the files have degraded they will be long gone.