New here, but have some intermediate knowledge of Bitcoin and Blockchain. My question is in regards to the off-chain transactions.
For example, today I paid a coffee shop using my Coinbase wallet. I scanned and paid. The transaction pended for about 5 mins, then was successful. Problem is, the coffee shop didn't receive it. So I had to repay them using cash just to settle it and not give the staff an awkward moment since they didn't know what was going on as well.
I wasn't sure what Bitcoin Client or "App" they were using, but it was on an iPad.
If I paid them using coinbase wallet, does this count as a offchain transaction? If it was an offchain transaction, shouldn't it be instant? Why did it take 5 mins of pending to clear?
Also, if I did want to pay them a transaction on the blockchain, would i need a different app that isn't online wallet based? Apps such as Bitcoin Wallet App instead of Coinbase or Xapo?