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If you look at https://etherscan.io/token/0xd46ba6d942050d489dbd938a2c909a5d5039a161?a=0xfe6c9c5a0d36eba3a767aaf6df2f335e666a74e7, you can notice that there were 3 transactions associated with the address 0xfe6c9c5a0d36eba3a767aaf6df2f335e666a74e7.
And if you sum up the quantity in (141,178604069 + 1659,518828706 = 1800,697432775) and
subtract quantity out (1800,697432775 - 1620,109104886) there should stay 180,588327889 AMPL on the address.
But actually there is 0 AMPL. Just curious about it, how could that be done without emiting Transfer or Burn event on behalf of 0xfe6c9c5a0d36eba3a767aaf6df2f335e666a74e7 address? How can I track where 180,588327889 AMPL "disappeared"

The same thing happened in the second in transaction : after sending 1659.518828706 to the address, the balance had to be equal to 1800,697432775 (balance was 141,178604069 before this transaction), but actual balance showing in that block is equal to 1747.184124201

curl -XPOST https://mynode \
--header 'Content-Type: application/json' \
--data-raw '{"jsonrpc": "2.0",
    "id":1,
    "method":"eth_call",
    "params":[{"to":"0xd46ba6d942050d489dbd938a2c909a5d5039a161", "data":"0x70a08231000000000000000000000000fe6c9c5a0d36eba3a767aaf6df2f335e666a74e7"},"0xa3496c"]
    }'

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x00000000000000000000000000000000000000000000000000000196cc4a0129"
}

196cc4a0129 is equal to 1747184124201 and AMPL's decimal is 9, so the result is 1747.184124201.
Please someone explain me where this amount of tokens "disappeared".

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  • From their docs the balances are not fixed they adjust dynamically following price changes.
    – Ismael
    Commented Sep 19, 2020 at 2:48
  • Thanks for your reply. But as far as I know every balance changing operation with tokens should be shown in the logs. Surprisingly, there are no any logs related to these changes.
    – alexqrid
    Commented Sep 19, 2020 at 8:10
  • Reading the contracts on Etherscan they do so in a global way when invoking the rebase function.
    – Ismael
    Commented Sep 19, 2020 at 21:54

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