I am checking one of the first tx to 1EXoDus address from:
https://blockchain.info/address/1PA8qhEzW7to6EeqBAdhVZYGbVj2MfmN2nwhich was 16BTC and it happened 2687249 seconds (around 31.1 days) before 1.9.2013.
The bonus is then 10% for a week, which is 10%*2687249/(3600*24*7)=>44.43%
[this fits to 4 weeks = 40%]
or in dacoinminsters:
160000000000+71091243386=231091243386
which is:
2310.91243386 mastercoins
Can I ask you what time you are using to define the end date? I'm using 1377993600. I think this is the difference between our results.
I am using 1377993600 as well, so I don't understand the difference in the results.
Here is my detailed calculation:
===================
1. check
https://blockchain.info/address/1PA8qhEzW7to6EeqBAdhVZYGbVj2MfmN2n2. The relevant tx is
https://blockchain.info/tx/546a406a131089e7c2f27d34a93a4d27441d98d096404d6737c5ad5b5e61a09b3. That tx was included in block 249498 which has timestamp (in the blockchain) of 2013-07-31 21:32:31
4. converting the block timestamp to epoch: 1375306351
5. calculate difference between tx and end date: 1377993600-1375306351=2687249 sec
6. calculate bonus percent: 10%*2687249/(3600*24*7)=44.432027116%
7. calculate total amount of mastercoins: 1600000000*100*(1+0.44432027116)=231091243385.6 -> 2310.91243386
I just assume you took a different timestamp for the tx.
It is important to note that the only relevant timestamp in the blockchain is the one of the corresponding block.
Any other "Received Time" is node-dependant value (e.g. one may get the tx few seconds minutes or even hours before of after blockchain.info, and there is no way to verify it), and that value should be ignored.