Here's the address:
https://blockexplorer.com/address/16s9vvyp5HMTW9Wa2AHQBHC4dAQaoB7xtiYou receive 0.15, 0.25, 0.49, 0.808843 for a total of 1.698843;
Tx:2f440 You send 0.177 to 1HCtDZ, and receive 0.631843 change to 19Tup2.
You receive twice more, notably 126.0 in
Tx:598b1Tx:e8d0a You send 2.631843 to 1HCtDZ, and receive 123.378157 change to 133Prm.
You receive one last time, back from 1HCtDZ.
Received:
0.15 + 0.25 + 0.49 + 0.808843 + 1.0 + 126.0 + 1.0005 = 129.699343
Sent (excluding change):
0.177 + 2.631843 = 2.808843
End balances:
16s9vv = 2.8905
19Tup2 = 0.631843
133Prm = 123.368157
Total = 126.8905
129.699343(received) - 2.808843(sent) = 126.8905 (total balance)
Most of your coins ended up over at
133Prm, which is part of your wallet, automatically generated for change.
You sir, are the enlightener of the creaky brains of old people like me.
It took half an hour of doing the math on paper and trying to follow the various addresses and transactions on block explorer but I think I'm starting to get it. I'll tell you how I now understand what happened. Would you kindly have a read and tell me if I do get it?
So I received 0.15, 0.25 0.49 and 0.808843 to 16s9v.
In the first client, I ordered a send of 0.177 to the second client at address 1HCtD.
The sending client chose take the amount 0.808843, send 0.177 from it to 1HCtD, and send back the change of 0.631843 to another of it's own addresses, namely 19Tup2.
(....another 20 minutes and a coffee pass)
Reading your post again, this is precisely what you said, so I think I finally get it. The later transactions, including the one with 126 btc are just more of the same.
This leads me to two conclusions most important to me:
1. By looking at an address in block explorer, the balance in the bottom right corner is the actual balance of the wallet provided 2 conditions are met: Only one address was used to receive btc, AND, there were no spends.
2. If 1. is correct, that means one can create a wallet offline, and provided it is never brought online, the coins sent to it are completely safe (provided of course the wallet.dat file is safeguarded at all times), even if no other subsequent backups are ever created. I.e. I create a wallet offline, use only ONE receive address, make 2,000 deposits to it, and if my grandchildren get a useable, uncorrupted wallet.dat 50 years later, they will have access to the btc on it, even though it is the original, initially created wallet.dat. (of course, provided bitcoin still exists and the network accepts a 50 year old wallet)
Is this all correct?