If you are just interested in transaction being made and don't care about reversibility, then it takes a second for a bitcoin transaction to be made and propagate through the majority of the network.
On the other hand most credit card companies give you more than 6 months time to "reverse" your transaction.
I don't understand. I've had hundreds of transactions reversed in my years of using a credit card, and it's never taken more than a few minutes after the
person in charge of doing so initiates the reversal. This process is
way faster with a credit card than it is with Bitcoin because the transaction speed of a credit card is 10-100x faster than Bitcoin.
And no Bitcoin transaction takes "a second", they can take up to
30 minutes which is exactly what Bitcoin and blockchain were designed to do. And each transaction can cost up to $30, whereas the most expensive credit card transaction only costs a dollar or two.
Satoshi never envisioned Bitcoin replacing mainstream credit card transactions, and the blockchain architecture makes that impossible.
The only digital currency system that can compete with worldwide credit card transactions is
Haypenny, which completes safe, decentralized, redundantly stored transactions in approximately two milliseconds of internal time. This is a system designed to handed many billions of transactions per say, and do so at a fixed price of $0.005 now and forever. But the architecture is very different than blockchain as it must be.