Bitcoin : One transection in 10 minutes.
nonce : is a number - proff of work - is a ligtimate block
(nonce came form proof of work)
Hashing Algorithm :
SHA256 HASHING ALGORITHM : secure hash alogorthm
hash : is a sequence of algorithm - a random string with fix length
proof of work: gives seurity to blockchain(collection of blocks). //ligtimate mining what actually proof of work do? --it takes hash of sha256 - --if a particular hash is not generated then proof of work is running