this is a usual situation that can happen depending on the miners/pools, the longest block time that ever happened is 5 days and 8 hours from the block 1
the 3 longest blocks time from this year are :
block 689301   02h19m
block 679786   02h02m
block 687143   01h59m

2 legacy (compressed & uncompressed), 2 segwit (Native & Nested)

Do you have any idea why this address and some other old addresses keep receiving coins from a specifics address periodically ?

It's better to find a collision than the right private key in this range, if it happens all the coins will go to the miner.

If you mean mining BTC just forget about it, GPU and CPU are useless no matter how many CPU cores or GPU you have.

Yes just ignore the off-topic spams. thanks for this thread, it is very relevant and not only to Bitcoin development.

It is possible that a bot can double spend any transaction if it manage to find the private key within a few seconds from the time that transaction shows up in the mempool ? (there's some addresses in the 32 Bitcoin Puzzle that if we know the pub key for those addresses we can find the private key in less than 30 seconds)