Why is bitcoin transaction time so long?
I've noticed that Bitcoin transaction times seem to be quite lengthy compared to other digital payment methods. Could you elaborate on the factors that contribute to this? Are there inherent design limitations within the blockchain architecture that affect speed? Additionally, what efforts are being made to improve the scalability and efficiency of bitcoin transactions? Is the current network congestion a major factor, or are there other underlying technical challenges that need to be addressed? I'm curious to understand the technical nuances that result in the relatively long transaction times associated with bitcoin.