A public address is embedded inside the output “script” so that it can only be spent using the private key corresponding to that public address. If we consider this output to be a database row, what we have is a database with per-row permissions which are based on public key cryptography. Furthermore, every transaction presents a publicly auditable proof that its creator(s) had the right to delete/modify its prior rows. This (I believe) is a genuine novelty in database technology.
A bearer instrument is a document that entitles the holder of the document rights of ownership or title to the underlying property, such as shares or bonds. Bearer instruments differ from normal registered instruments, in that no record is kept of who owns the underlying property, or of the transactions involving transfer of ownership. Whoever physically holds the bearer document is assumed to be the owner of the property. This is useful for investors and corporate officers who wish to retain anonymity, but ownership (or legal entitlement) is extremely difficult to establish in event of loss or theft.
It is now possible to build systems that are operated by multiple parties, none of whom fully trust each other, that nevertheless come into and remain in consensus as to the nature and evolution of a set of shared facts.
For the third time this week, the White House prohibited news organizations from airing the briefing, which has traditionally been televised, and requested that audio recordings be withheld from broadcast until the question-and-answer session had concluded.