Reuben Metcalfe

Weak artificial intelligenceartificial intelligence or narrow AI is a form of artificial intelligence specifically designed to be focused on a narrow task. Weak AI simply acts upon and is bound by the commands imposed on it. All of its actions, decisions and ideas are programmed in it.

Proof of Existence provides a web app and an API for storing a SHA-256 digest of a document on the BitcoinBitcoin blockchain. The digest can be compared to that of an unchanged copy of the document at a later date to verify that the document existed at the prior date. Proof of Existence is useful for copyright and patent claims, and other instances where document timestamping or document integrity is important.

Many startups are formed as a C corps (Inc's) in the US and 'Ltd' in the UK. Some startups are formed as LLCs. Characteristically, founders can be working on a project anywhere from days to years before incorporating as legal entities, in stark contrast to the commercial behavior of more established operations.