Does this mean that a user who's bet meets all the other criteria will receive 1% of the Jackpot regardless of whether he/she was betting with 101 Satoshis or 5001 Satoshis with 49.849% win chance?
That's correct. We had 0.1% (or even less...don't remember
) of the jackpot but the rewards were really low, that's why we set it to minimum 1% of jackpot.
The first 5 jackpots were 0.1% rewards, the change came about a month after the jackpot was introduced (that's all the way back in July 2015) since then it's 1%.
The jackpot tab actually still lists all hits, so you can look it up there (although some of the bets are archived, so the details of the bet itself aren't available anymore, just the info about the jackpot hit).
Some more interesting jackpot stats:
The initial BTC jackpot balance was 0.3
BTC. The amount was increased to 0.5
BTC in celebration of the site anniversary in August 2015.
The highest percentage jackpot hit so far was WildTiger with a 80% hit (2.58
BTC reward).