Please excuse my click bait title, but I am trying to calculate some stuff and it seems to me our friends at Etherscan may have forgotten basic math.
Now, more specifically, I have collected all NMR transactions on the blockchain so that I could gain historical perspective, as well as some other information. Part of my information compilation extravaganza is the current NMR balance of all NMR addresses that have ever been used. However, when I was reviewing the data, I noticed some… inconsistencies. See here as an example of where, I postulate, the reported balance on Etherscan is wrong (I intentionally chose a simple example so it would be obvious there was an error.)
Clicking on that link will reveal there are three transactions in this example, each adding to the address 0x0000000000000000000000000000000000000075. Now, you’ll have to forgive me, I did not get a PhD in math so I’m only guessing when I say that 0.1907843 + 0.1 + 0.1 is 0.3907843 and NOT 0.2907843 as Etherscan as suggested. My question, dear subjects of Numerai-dom, is how is this is possible? What am I missing? Do I have a smooth brain (just be honest, I can take it)?
If that example is not enough for you, I have found some more addresses with the same problem. View them at your own leisure (formatted as address - expected NMR balance, Etherscan NMR balance, # of transactions for that address. Sorry I didn’t know how to make a table.)
0x00000000000000000000000000000000000000e0 - Expected: 36.38124031668799, Got: 1.3212403166879967, Txns: 130
0x00000000000000000000000000000000000000ed - Expected: 76.50000000097874, Got: 9.78750619e-10, Txns: 71
0x00000000000000000000000000000000000000f1 - Expected: 62.180422213195186, Got: 54.28042221319519, Txns: 68
0x0000000000000000000000000000000000000104 - Expected: 4.271598, Got: 0.771598, Txns: 46
0x0000000000000000000000000000000000000075 - Expected: 0.3907843, Got: 0.2907843, Txns: 3
0x00000000000000000000000000000000000001ed - Expected: 200.89549419276224, Got: 62.145494192762236, Txns: 102
0x00000000000000000000000000000000000001f2 - Expected: 85.00000463431584, Got: 70.00000463431584, Txns: 73
0x000000000000000000000000000000000000012d - Expected: 5.10580006, Got: 4.10580006, Txns: 5
0x0000000000000000000000000000000000000165 - Expected: 909.0, Got: 0.0, Txns: 188
0x000000000000000000000000000000000000016e - Expected: 174.605367394, Got: 144.605367394, Txns: 65
0x00000000000000000000000000000000000000ca - Expected: 46.7228288379, Got: 1.002828837900002, Txns: 58
0x00000000000000000000000000000000000002e7 - Expected: 6.301325870395709, Got: 0.15132587039570825, Txns: 58
0x00000000000000000000000000000000000003e2 - Expected: 79.5037006452, Got: 39.9036006452, Txns: 59
0x0000000000000000000000000000000000000388 - Expected: 234.440219, Got: 223.440219, Txns: 4
0x0000000000000000000000000000000000000216 - Expected: 30.123519, Got: 21.123519, Txns: 36
0x000000000000000000000000000000000000025d - Expected: 3919.59301808111, Got: 1589.5930180811101, Txns: 500
0x000000000000000000000000000000000000041e - Expected: 25.265008347896284, Got: 0.7650083478962841, Txns: 155
0x000000000000000000000000000000000000053d - Expected: 633.0458263664165, Got: 541.6958263664164, Txns: 192
0x00000000000000000000000000000000000004e1 - Expected: 0.2, Got: 0.0, Txns: 33
0x00000000000000000000000000000000000005f8 - Expected: 24.52773842, Got: 23.52773842, Txns: 15
0x0000000000000000000000000000000000000500 - Expected: 69.57459223047664, Got: 33.83459223047664, Txns: 28
0x000000000000000000000000000000000000050e - Expected: 474.83288188684077, Got: 470.73288188684074, Txns: 194
0x0000000000000000000000000000000000000753 - Expected: 137.19890813701824, Got: 125.19890813701824, Txns: 17
0x0000000000000000000000000000000000000775 - Expected: 36.467264133361894, Got: 18.467264133361898, Txns: 343
0x00000000000000000000000000000000000007dd - Expected: 1.700000396702247, Got: 3.96702246989e-07, Txns: 28
0x00000000000000000000000000000000000007e0 - Expected: 43821.7578598, Got: 0.0078598, Txns: 7
0x00000000000000000000000000000000000007f9 - Expected: 190.313913683, Got: 144.313913683, Txns: 39
0x0000000000000000000000000000000000000680 - Expected: 27.0063820987, Got: 8.0063820987, Txns: 87
0x0000000000000000000000000000000000000684 - Expected: 15.223406760918003, Got: 14.223406760918003, Txns: 21
0x000000000000000000000000000000000000069f - Expected: 191.41168841581856, Got: 24.411688415818563, Txns: 264
0x00000000000000000000000000000000000006de - Expected: 0.8006064323186601, Got: 0.000606432318660085, Txns: 106
0x00000000000000000000000000000000000007a5 - Expected: 6.104016, Got: 0.004016, Txns: 38
0x00000000000000000000000000000000000006bf - Expected: 435.87877188462124, Got: 31.298771884621257, Txns: 14
0x00000000000000000000000000000000000006e9 - Expected: 8.8, Got: 5e-18, Txns: 103
0x00000000000000000000000000000000000007a6 - Expected: 22.00078267538513, Got: 0.000782675385128397, Txns: 12
0x00000000000000000000000000000000000007a7 - Expected: 30.173739876594674, Got: 26.173739876594674, Txns: 26
0x0000000000000000000000000000000000000727 - Expected: 54.550333441428805, Got: 5.550333441428806, Txns: 34
0x0000000000000000000000000000000000000730 - Expected: 34.82, Got: 0.0, Txns: 42
0x0000000000000000000000000000000000000739 - Expected: 15.643820089283285, Got: 3.0438200892832836, Txns: 60
0x000000000000000000000000000000000000094b - Expected: 55.00090964, Got: 0.00090964, Txns: 44
0x000000000000000000000000000000000000094e - Expected: 740.0, Got: 300.0, Txns: 348
0x0000000000000000000000000000000000000953 - Expected: 1.810000096702247, Got: 9.6702246989e-08, Txns: 26
0x000000000000000000000000000000000000096d - Expected: 70.45518377923113, Got: 44.45518377923114, Txns: 191
0x0000000000000000000000000000000000000898 - Expected: 163.993845, Got: 0.003845, Txns: 18
0x000000000000000000000000000000000000089f - Expected: 8.3789589132, Got: 0.17895891320000007, Txns: 17
0x000000000000000000000000000000000000082b - Expected: 792.3659006224101, Got: 99.41090062241008, Txns: 197
0x000000000000000000000000000000000000097d - Expected: 200.40004774996302, Got: 4.7749963030532e-05, Txns: 324
0x0000000000000000000000000000000000000861 - Expected: 47.60057891768566, Got: 0.000578917685657223, Txns: 27
0x000000000000000000000000000000000000087f - Expected: 17.128526, Got: 0.128526, Txns: 4
0x0000000000000000000000000000000000000888 - Expected: 6.9, Got: 0.0, Txns: 124
0x00000000000000000000000000000000000008b2 - Expected: 16.931967145723032, Got: 0.4319671457230333, Txns: 8
0x00000000000000000000000000000000000008ba - Expected: 88.90352431019711, Got: 0.6035243101971138, Txns: 315
0x00000000000000000000000000000000000008d4 - Expected: 24.0999371, Got: 13.0999371, Txns: 42
0x0000000000000000000000000000000000000904 - Expected: 602.846495111256, Got: 602.346495111256, Txns: 21
0x0000000000000000000000000000000000000a70 - Expected: 303.21334682136126, Got: 300.21334682136126, Txns: 6
0x0000000000000000000000000000000000000a96 - Expected: 312.06782959494444, Got: 0.507829594944469, Txns: 85
0x0000000000000000000000000000000000000c28 - Expected: 113.08078960152078, Got: 65.08078960152078, Txns: 28
0x0000000000000000000000000000000000000b1a - Expected: 1143.1339642702235, Got: 1139.3339642702233, Txns: 77
0x0000000000000000000000000000000000000bcd - Expected: 5.27434923, Got: 0.27434923, Txns: 8
0x0000000000000000000000000000000000000bf1 - Expected: 148.9127349549427, Got: 0.11273495494268887, Txns: 122
0x0000000000000000000000000000000000000c0c - Expected: 75.36431932055318, Got: 73.36431932055318, Txns: 28
0x0000000000000000000000000000000000000d3b - Expected: 0.45117976, Got: 0.35117976, Txns: 3
0x0000000000000000000000000000000000000d55 - Expected: 0.4, Got: 0.0, Txns: 41
0x0000000000000000000000000000000000000d93 - Expected: 584.169448957308, Got: 0.06944895730799734, Txns: 383
0x0000000000000000000000000000000000000dda - Expected: 832.2648097959479, Got: 831.064809795948, Txns: 39
0x0000000000000000000000000000000000000dde - Expected: 259.1000000008799, Got: 8.79902688e-10, Txns: 313
0x0000000000000000000000000000000000000e17 - Expected: 818.0, Got: 800.0, Txns: 6
0x0000000000000000000000000000000000000e26 - Expected: 19.5, Got: 0.0, Txns: 15
0x0000000000000000000000000000000000000e3f - Expected: 263.0003364042072, Got: 0.000336404207207894, Txns: 25
0x0000000000000000000000000000000000000e40 - Expected: 164.52052945627412, Got: 122.42052945627411, Txns: 88
0x0000000000000000000000000000000000000ded - Expected: 3.51889036333089, Got: 0.018890363330889944, Txns: 7
0x0000000000000000000000000000000000000ccb - Expected: 805.3, Got: 0.0, Txns: 335
0x0000000000000000000000000000000000000df1 - Expected: 2.4, Got: 0.0, Txns: 46
0x0000000000000000000000000000000000000cfb - Expected: 1.6646553, Got: 0.8646553, Txns: 5
0x0000000000000000000000000000000000000cfe - Expected: 97.6291719105031, Got: 0.029171910503108113, Txns: 134