Bitcoin was projected coin deeply rooted on a refined technology to replace most works of financial institutions, bitcoin came as a new era money known as digital because it's power block believes there are intangible or digital products of all kind to be purchased without physically paying cash or have to traveled down to complete payment transactions.
Bitcoin actually believes that technology is lacking financial power outside big industrial equipment, So Satoshi sees the need to includes e-banking system of trading, saving, buying and selling of bitcoin as a digital market product.
BTC is unique because it makes it easy for new wave of currency exchange, it blockchain has a unique wallet address, is not easily comprises to hackers or scammers, it benches on volume of communities members, it's God fatherism to other altcoins. Is transaction made easy and key or password individuals oriented. Bitcoin trades in a every sphere of market.
I'm struggling to see a point of your post. Bitcoin, at least technologically speaking WAS unique when it came out. But no less than a month or two later, you got copycats that just renamed the ticker and called it a new coin.
Historically, it's unique in a sense that it was 1st of it's kind.