What are the miners ?

[titi]

What are the miners ?
there are miners everywhere ...
Bitcoin, Ethereum ... what are they good for ?

[shusmoybabu]

ever notice something like (5 oout ofof 50 network confirmed) when you make a new transection?
ever wounderd what they are?who confirms those things?
Bitcoin is annonymous!Bank doesn't do that!who does?

Answer : is those miners you saw does them!
they confirms those transections and earns a little money!
and that's it!

[Mendo Crypto]

Miners, miners, what are they good for? Huh!!! Absolutely nothing! 

There are application specific miners (ASIC) and graphics card miners (GPU). Both can be profitable when running cryptographic protocols to discover digital tokens.

[Chilwell]

Miners are individuals or organizations that use powerful computers to solve complex mathematical problems, ensuring the security of the blockchain network and validating transactions.

[Z-tight]

ensuring the security of the blockchain network and validating transactions.

Just to be completely correct, BTC miners confirm transaction, BTC nodes validate transactions.

The Ethereum network has also moved from proof of work to proof of stake, so there is no mining or miners in the network. It is now run and secured by validators, though it makes the network ever more centralized and pro censorship.