Hi,
...
I love to get some feedback ...
Is it possible, that Satoshi used for his ''early mined coins'' precalculated SHA256 addresses like we do it here?
Possible? Yes, but IMO it's very unlikely since,
1. Satoshi also use SHA256 for Proof of Work, which means he know how fast SHA-256 speed on CPU/GPU.
2. Creating private key with such weak method allow people to steal Satoshi's Bitcoin and impersonate Satoshi easier, which could disrupt Bitcoin in many ways (e.g. crashing Bitcoin price, influence people to reduce strength of Bitcoin protocol, etc.).