Bitcoin: Simultaneous Block Seal with Repetitive Transactions - How?

Question

bitcoin

Let's say there are transactions 1,2,3,4,5, which appear gradually.
The first miner seals transactions 1,2,3 in a block. and the second 1,2,3,4,5 (4 and 5 appeared later than the start of the first miner) because. started later. When the first one seals the block (let's say before the second one), transactions 1,2,3 will be confirmed. And then the block with transactions 1,2,3,4,5 in any way will become invalid by the time of creation.
What nuances in the operation of the system did I miss and why did I come up with such an error? How is this currently being handled?

Answer 1

Whoever got up first, that and slippers. But, if both miners sealed the block at about the same time, then the network will split into 2 camps: which block reached first. Well, then the mechanism of the largest chain already enters. Those. the validity of the chain is determined by subsequent blocks, where there will be more of them, then we take it as true.