Here is how to calculate interest on
ZEIT at 15% interest rate per year
https://bitcointalk.org/index.php?topic=487814.msg14873082;topicseen#msg14873082ZEIT Interest Calculationsoriginal post for 25%:
https://bitcointalk.org/index.php?topic=487814.msg9439264#msg9439264Updated for 15%Current rate is 15% per year (365 days)
Which Breaks down to % 0.0410958904109589 per day, and the earliest you can stake is 20 days,
20 days * 0.0410958904109589 = 0.821917808219178
So if you have 10,000 coins in a block and it stakes right at 20 days
10,000 coins*0.821917808219178% = 82.1917808219178But if that Block of 10,000 coins does not stake til the 25th day then your numbers are
25 days * 0.0410958904109589 = 1.027397260273973
10,000 coins*1.027397260273973% = 102.7397260273973If all of your coins stake at 20 days the interest amount seems lower , but it will stake more times in the year and compound interest will be included in the 2nd and beyond stakes increasing the final amount.
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P.S.
Write down the amount that is being mined and calculate the days since received and you should be able to compare calculations with amount received.
This is a rough estimate, You would have to Calculate by Seconds to get an exact match instead of days.
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