Blockchain API Bitcoin transaction list to a wallet

Question

I wanted to write a small script to parse all incoming transactions to a wallet. The wallet I'm looking at is from an OpenSource project I'm working for, to get an overview of the amounts given to the project in a certain time-range. I use the Blockchain Data API and try to parse the information from this call (includes the wallet-adress). But I can't seem to get the amount of Bitcoins that were transferred to the wallet. Sometimes there are amounts as big as 266 BTC listed, even though the real transaction was just a couple of Satoshis.

So, the question is: When I have a JSON Transaction Block like this:

   "ver":1,
   "inputs":[
      {
         "sequence":4294967295,
         "prev_out":{
            "spent":true,
            "tx_index":273950706,
            "type":0,
            "addr":"12tPhkHLjmkDfqTfvbagbnkYDU5UTu2pMp",
            "value":461323,
            "n":1,
            "script":"76a91414b04a7b66d06dd399bdb689df209ed688e9bcaa88ac"
         },
         "script":"483045022100f38ffd67d53b4c5a6f6a2543ca6217863be5b4f3a43e885a2520dbb768ba5df702203d9782af024ee9e213fb59cee1c788c70e66d66addb553b74610a1fed3df10390121026b138ff61ffeaf459c4916889d2c53894fc029c9729886714fe23ebd8a15bb32"
      }
   ],
   "block_height":480392,
   "relayed_by":"52.59.6.61",
   "out":[
      {
         "spent":false,
         "tx_index":274914673,
         "type":0,
         "addr":"1M3GipkG2YyHPDMPewqTpup83jitXvBg9N",
         "value":295902,
         "n":0,
         "script":"76a914dbd0788d294dd15704d232053790c555d1cb337888ac"
      },
      {
         "spent":false,
         "tx_index":274914673,
         "type":0,
         "addr":"18h2yt8cJSYwGSWV5nUodTgPZj9Vi5aCJS",
         "value":124987,
         "n":1,
         "script":"76a914545b2c20e7d8ded3853a2336ebedf7752cf823dd88ac"
      }
   ],
   "lock_time":0,
   "result":0,
   "size":226,
   "time":1502650024,
   "tx_index":274914673,
   "vin_sz":1,
   "hash":"02a7bf19417db6d975d48e27199cd65dcc415c5bf81ed447f945b2a4f3dc1d24",
   "vout_sz":2
},

What is the amount of Satoshis that have been added (or redeemed) from that wallet? How should I interpret the values in the json?

Answer 1

Transaction has inputs and outputs. "value" is Satoshi count:

  "inputs":[
  {
...
         "prev_out":{
...
            "value":461323,
...
         },
...
      }
   ],
...
   "out":[
      {
...
         "value":295902,
...
      },
      {
...
         "value":124987,
...
      }
   ],
...

To calculate fee you should calculate the difference between all inputs and outputs.