The blockchain generates one new block roughly every 10 minutes. Each block is currently limited to around 1MB (but for lots of reasons, the blocks might be sm

The blockchain generates one new block roughly every 10 minutes. Each block is currently limited to around 1MB (but for lots of reasons, the blocks might be smaller) Each transaction in a block takes up some amount of space. Depending on the number of inputs and outputs, a transaction can vary in size from around 200 bytes to several kilobytes. Assuming a 1024kb block and (say) 256 bytes per transaction, that's 4096 transactions every 600 seconds, or roughly 7 a second.