wholisticguy

You do so at the pleasure and convenience of duopoly of credit card payment processors (Visa and MasterCard).

And occasionally, they will withdraw that service for arbitrary and capricious reasons

https://news.ycombinator.com/item?id=44685011

Crypto stablecoins running on blockchain rails provide an alternative to that network.

This is the main value of a blockchain. You can do business with someone you don't specifically trust without requiring a third party in the middle to mediate the financial transaction.

The only people that need to run a verifier node are those that don't trust the other verifier nodes to do it properly. It's opt in, most will not run one, but a business that has enough money at stake can if they want to.

Then the blockchain client software provides the framework for cryptographic assurance that the two copies of the ledger are in sync.