21,000,000 * $69694.76 = $1.46357E+12 USDC

$1.5 Trillion US Dollars is the minimum estimated valuation of the entire Cryptocurrency Industry. These are the Financial Theories behind our estimate

Market Capitalization as a Reflection of Value:

Similarly to how Market Capitalization is determined for Public companies,
# of Shares x Share Price, we can compute the market capitalization of the first cryptocurrency, Bitcoin, by multiplying the price of one individual Bitcoin times the total number of Bitcoins.

Bitcoin is the first Sound Trustless Money, but not the Last:

The creation of Bitcoin has led to many other similar projects using the Cryptographic technology to create a trustless tokenized system.

While many of these projects are designed only to satisfy the original use case of Bitcoin, other tokens are designed with different use cases in mind, sometimes more limited in scope, sometimes much broader, like an Internet of Assets.

The Social Network Effect:

Historically, Internet Social Network companies have seen exponential grow due to a compounding network effect where friends tell their friends, and so on.

As Cryptocurrency adoption increases, so does its liquidity and utility.

In the same way, Google and Facebook have grown to over a billion users, it is inevitable that Cryptocurrency will, because, as compared to older versions of currency, it is a far better Social Network.