user78798: I want to know the amount of computational power required to verify a just a couple of transactions. No mining included, just verification
can it be done with CPU or maybe even phones? 

user63872: Transactions can be verified as being valid by inexpensive software, such as a cellphone. 
Transaction confirmation requires a miner to include the transaction in a block. Confirmation is not done on a transaction-by-transaction basis, so "how much power to confirm just a couple of transactions" is not really a good question to ask. Instead you could ask "How much computational power do you need in order to mine a block?", with the understanding that many transactions can be included in a single block. 

78798: <p>I want to know the amount of computational power required to verify a just a couple of transactions. No mining included, just verification
can it be done with CPU or maybe even phones? </p>
 63872: <p>Transactions can be verified as being valid by inexpensive software, such as a cellphone. </p>

<p>Transaction confirmation requires a miner to include the transaction in a block. Confirmation is not done on a transaction-by-transaction basis, so <em>"how much power to confirm just a couple of transactions"</em> is not really a good question to ask. Instead you could ask <em>"How much computational power do you need in order to mine a block?"</em>, with the understanding that many transactions can be included in a single block. </p>
