An ordinary bank transfer exists in the bank's database. You have to trust the bank: it keeps the ledger and it also edits it. A blockchain works differently, since every participant in the network keeps the ledger at the same time, and the agreement between their copies is the proof.
What chaining the blocks achieves
Every block contains a fingerprint of the previous one. Substituting a single record changes that fingerprint, and therefore every block after it, so the whole chain would have to be rewritten faster than the rest of the network extends it. In practice that is out of reach.
What this means for you
A transfer cannot be recalled. A mistake in the address is not a disputed transaction for support to sort out but an accomplished fact: the network did exactly what it was told.
And everything is visible. Any transfer can be looked up by its hash in a public block explorer, along with the amount, the time and the addresses.
Openness is not the same as anonymity
A blockchain does not record the owner's name, but the whole path of the funds is visible. As soon as an address is linked to a person once, during a withdrawal to a bank card for instance, its entire history can be read backwards. Source of funds checks are built on exactly this.
What "transfer confirmed" means
Landing in a block is not yet finality. Each following block makes a reversal more expensive, so services wait for several confirmations: on TRON that is about a minute, on the Bitcoin network up to an hour.
Hence the difference in exchange times between networks that so often surprises people: it is not the speed of the exchange service but the rules of the network itself.