Satoshi Nakamoto is the pseudonymous author that published the Bitcoin whitepaper in 2008, the white paper contains a profile use cases of Bitcoin (available on bitcoin.org).
Satoshi was the first person to publish a decentralized cryptocurrency based on the blockchain network. He didn't invent the blockchain technology.
Bitcoin was officially launched in the year 2019. The name 'Satoshi" has been on a hot debate and accusations as the founder identity has never been revealed.
There are many people who claimed s to be Satoshi Nakamoto . Truth is we don't know if it's a single person or a group of people. They could be dead or alive. But without solid, concrete evidence, we’ll never truly know who Satoshi Nakamoto is. However, we can be sure about one thing; Satoshi Nakamoto HoDL a lot of bitcoins and he is one of the wealthiest man on earth as Forensic technologists have tracked down where Satoshi has stored his bitcoins, putting his net worth in the spotlight.