I realized that the backup project idea in P2P transactions
I don't understand this in fully
Peer-to-peer transactions (also referred to as person-to-person transactions, P2P transactions, or P2P payments) are electronic money transfers made from one person to another through an intermediary, typically referred to as a P2P payment application. P2P payments can be sent and received via mobile device or any home computer with access to the Internet, offering a convenient alternative to traditional payment methods.
What is the difference between P2P and Blockchain technology?
P2P (Peer-to-Peer) is one of the building blocks for the Blockchain technology. Bitcoin, the 1st blockchain network to come into existence, leveraged the power of P2P networks aka decentralisation and distribution.
In a Blockchain network, on top of the P2P networks, other elements like cryptography, consensus algorithms (proof of work for example) have been stitched to form a beautiful new technology.
Blockchain has adopted P2P networking model as opposed to client-server in line with its philosophy of decentralisation. But networking is just one of the components of a public blockchain stack, the others being cryptography, distributed ledgers , consensus mechanisms, cryptocurrency & incentivisation schemes to keep the network going.