In 2008, Satoshi Nakamoto, published a whitepaper!
A whitepaper is a description of a concept but little did we know what impact this concept might have only a few years later….this concept described a peer-to-peer electronic cash system.
Read the Whitepaper here: https://bitcoin.org/bitcoin.pdf
The significant problem that BitCoin overcomes is the double-spending problem without the use of a trusted 3rd Party! It explains a system that manage trust without that central party.