Cryptocurrencies with the Largest Blocks in Their Blockchains

The current Bitcoin block size is 1 MB, though without a hard cap and often going to 1.4 MB or below. There is currently no clear consensus on what makes a block “big” The current record is held by a block from March 2021, which holds 638 MB of data, equivalent to a few hours on the Bitcoin network. The current BTC limit is soft-capped between 2 and 4 MB with SegWit transactions, though the real block filling is somewhat lower. Some altcoins limit their carrying capacity below 1 MB due to their relatively small network load.