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Notes

Pre-swap block: https://www.mintscan.io/osmosis/blocks/9465039
Swap block: https://www.mintscan.io/osmosis/blocks/9465040

Tx in question: https://www.mintscan.io/osmosis/txs/E054F4F363113C6006C82BD7A899C48D454E419C5EED15CBF859F7D60718E99C

Swaps in: 3000000 UUSDC
Gets out: 10944266 UQCK

Swap route is pools 678 > 952

678 is USDC <> OSMO https://info.osmosis.zone/pool/678

  • osmo10venxtvdglryxkdmvjr8wa6n3ugja40rewddlxtg0pr30vmkf47sllgslg
    952 is QCK <> OSMO https://info.osmosis.zone/pool/952
  • osmo1k3j5wgcj8um2gnu8qxdm0mzzuh6x66p4p7gn6fraf3wnpfcvg9sq2zhx7j

Balances Block 9465039

Pool 679

czar@Adams-MacBook-Pro ~ % osmosisd q bank balances osmo10venxtvdglryxkdmvjr8wa6n3ugja40rewddlxtg0pr30vmkf47sllgslg --height 9465039 --node  https://rpc-osmosis-ia.cosmosia.notional.ventures:443
balances:
- amount: "7838673705736"
  denom: ibc/D189335C6E4A68B513C10AB227BF1C1D38C746766278BA3EEB4FB14124F1D858
- amount: "10651596226854"
  denom: uosmo
pagination:
  next_key: null
  total: "0"

Pool 952

czar@Adams-MacBook-Pro ~ % osmosisd q bank balances osmo1k3j5wgcj8um2gnu8qxdm0mzzuh6x66p4p7gn6fraf3wnpfcvg9sq2zhx7j --height 9465039 --node  https://rpc-osmosis-ia.cosmosia.notional.ventures:443
balances:
- amount: "658986900132"
  denom: ibc/635CB83EF1DFE598B10A3E90485306FD0D47D34217A4BE5FD9977FA010A5367D
- amount: "329923796412352352"
  denom: ibc/BB936517F7E5D77A63E0ADB05217A6608B0C4CF8FBA7EA2F4BAE4107A7238F06
- amount: "273612"
  denom: ibc/EB7FB9C8B425F289B63703413327C2051030E848CE4EAAEA2E51199D6D39D3EC
- amount: "244231522381"
  denom: uosmo

Swap Account

czar@Adams-MacBook-Pro ~ % osmosisd q bank balances osmo100ywfax95u9c6mndxzuqkq2fdkv7f6pqmsnhke --height 9465039 --node  https://rpc-osmosis-ia.cosmosia.notional.ventures:443
balances:
- amount: "4914"
  denom: ibc/0EF15DF2F02480ADE0BB6E85D9EBB5DAEA2836D3860E9F97F9AADE4F57A31AA0
- amount: "16774695"
  denom: ibc/42D24879D4569CE6477B7E88206ADBFE47C222C6CAD51A54083E4A72594269FC
- amount: "945474"
  denom: ibc/635CB83EF1DFE598B10A3E90485306FD0D47D34217A4BE5FD9977FA010A5367D
- amount: "38966102900929795331"
  denom: ibc/6AE98883D4D5D5FF9E50D7130F1305DA2FFA0C652D1DD9C123657C6B4EB2DF8A
- amount: "4631895"
  denom: ibc/A8CA5EE328FA10C9519DF6057DA1F69682D28F7D0F5CCC7ECB72E3DCA2D157A4
- amount: "10362158"
  denom: ibc/BB6BCDB515050BAE97516111873CCD7BCF1FD0CCB723CC12F3C4F704D6C646CE
- amount: "250421"
  denom: ibc/C140AFD542AE77BD7DCC83F13FDD8C5E5BB8C4929785E6EC2F4C636F98F17901
- amount: "6008939"
  denom: ibc/D189335C6E4A68B513C10AB227BF1C1D38C746766278BA3EEB4FB14124F1D858
- amount: "294000000000000000"
  denom: ibc/D38BB3DD46864694F009AF01DA5A815B3A875F8CC52FF5679BFFCC35DC7451D5
- amount: "263446152"
  denom: ibc/EDD6F0D66BCD49C1084FB2C35353B4ACD7B9191117CE63671B61320548F7C89D
- amount: "1285640"
  denom: ibc/FA602364BEC305A696CBDF987058E99D8B479F0318E47314C49173E8838C5BAC
- amount: "68860"
  denom: uosmo

Balances Block 9465040

Pool 679

czar@Adams-MacBook-Pro ~ % osmosisd q bank balances osmo10venxtvdglryxkdmvjr8wa6n3ugja40rewddlxtg0pr30vmkf47sllgslg --height 9465040 --node  https://rpc-osmosis-ia.cosmosia.notional.ventures:443
balances:
- amount: "7838677443678"
  denom: ibc/D189335C6E4A68B513C10AB227BF1C1D38C746766278BA3EEB4FB14124F1D858
- amount: "10651591157707"
  denom: uosmo
pagination:
  next_key: null
  total: "0"

Pool 952

czar@Adams-MacBook-Pro ~ % osmosisd q bank balances osmo1k3j5wgcj8um2gnu8qxdm0mzzuh6x66p4p7gn6fraf3wnpfcvg9sq2zhx7j --height 9465040 --node  https://rpc-osmosis-ia.cosmosia.notional.ventures:443
balances:
- amount: "658975955866"
  denom: ibc/635CB83EF1DFE598B10A3E90485306FD0D47D34217A4BE5FD9977FA010A5367D
- amount: "329923796412352352"
  denom: ibc/BB936517F7E5D77A63E0ADB05217A6608B0C4CF8FBA7EA2F4BAE4107A7238F06
- amount: "273612"
  denom: ibc/EB7FB9C8B425F289B63703413327C2051030E848CE4EAAEA2E51199D6D39D3EC
- amount: "244235590781"
  denom: uosmo
pagination:
  next_key: null
  total: "0"

Swap Account

czar@Adams-MacBook-Pro ~ % osmosisd q bank balances osmo100ywfax95u9c6mndxzuqkq2fdkv7f6pqmsnhke --height 9465040 --node  https://rpc-osmosis-ia.cosmosia.notional.ventures:443
balances:
- amount: "4914"
  denom: ibc/0EF15DF2F02480ADE0BB6E85D9EBB5DAEA2836D3860E9F97F9AADE4F57A31AA0
- amount: "16774695"
  denom: ibc/42D24879D4569CE6477B7E88206ADBFE47C222C6CAD51A54083E4A72594269FC
- amount: "11889740"
  denom: ibc/635CB83EF1DFE598B10A3E90485306FD0D47D34217A4BE5FD9977FA010A5367D
- amount: "38966102900929795331"
  denom: ibc/6AE98883D4D5D5FF9E50D7130F1305DA2FFA0C652D1DD9C123657C6B4EB2DF8A
- amount: "4631895"
  denom: ibc/A8CA5EE328FA10C9519DF6057DA1F69682D28F7D0F5CCC7ECB72E3DCA2D157A4
- amount: "10362158"
  denom: ibc/BB6BCDB515050BAE97516111873CCD7BCF1FD0CCB723CC12F3C4F704D6C646CE
- amount: "250421"
  denom: ibc/C140AFD542AE77BD7DCC83F13FDD8C5E5BB8C4929785E6EC2F4C636F98F17901
- amount: "3008939"
  denom: ibc/D189335C6E4A68B513C10AB227BF1C1D38C746766278BA3EEB4FB14124F1D858
- amount: "294000000000000000"
  denom: ibc/D38BB3DD46864694F009AF01DA5A815B3A875F8CC52FF5679BFFCC35DC7451D5
- amount: "263446152"
  denom: ibc/EDD6F0D66BCD49C1084FB2C35353B4ACD7B9191117CE63671B61320548F7C89D
- amount: "1285640"
  denom: ibc/FA602364BEC305A696CBDF987058E99D8B479F0318E47314C49173E8838C5BAC
- amount: "67610"
  denom: uosmo

Pool 678 Diffs:

  • 7838677443678 - 7838673705736 = 3737942 (uusdc)
  • 10651591157707 - 10651596226854 = -5069147 (uosmo)

Pool 952 Diffs

  • 658975955866 - 658986900132 = -10944266 (uqck)
  • 244235590781 - 244231522381 = 4068400 (uosmo)

Account Diffs:

  • 3008939 - 6008939 = -3000000 (uusdc)
  • 11889740 - 945474 = 10944266 (uqck)

This means we have unaccounted for:

  • 737942 (uusdc)
  • -1000747 (uosmo)

Protorev Diffs:

  • 45356704350 - 45356703603 = 747 (uosmo)

What happened

Protorev backran the following tx in the same block: https://www.mintscan.io/osmosis/txs/A8D2BD0349DDCDBF975011E242AA791154C4D761FAE27AF76E2555C02ECAE90D

This:

  • minted 1000000 uosmo
  • used pool 678 as the final swap route
  • profited 747 uosmo
  • burned 1000000 uosmo

Protorev account pre swap

czar@Adams-MacBook-Pro ~ % osmosisd q bank balances osmo17qdmjdumw4xawam4g46gtwzle5rd4zwyfqvvza --height 9465039 --node  https://rpc-osmosis-ia.cosmosia.notional.ventures:443
balances:
- amount: "794360948"
  denom: ibc/27394FB092D2ECCD56123C74F36E4C1F926001CEADA9CA97EA622B25F41E5EB2
- amount: "2887794603"
  denom: ibc/D189335C6E4A68B513C10AB227BF1C1D38C746766278BA3EEB4FB14124F1D858
- amount: "45356703603"
  denom: uosmo

Protorev account post swap

czar@Adams-MacBook-Pro ~ % osmosisd q bank balances osmo17qdmjdumw4xawam4g46gtwzle5rd4zwyfqvvza --height 9465040 --node  https://rpc-osmosis-ia.cosmosia.notional.ventures:443
balances:
- amount: "794360948"
  denom: ibc/27394FB092D2ECCD56123C74F36E4C1F926001CEADA9CA97EA622B25F41E5EB2
- amount: "2887794603"
  denom: ibc/D189335C6E4A68B513C10AB227BF1C1D38C746766278BA3EEB4FB14124F1D858
- amount: "45356704350"
  denom: uosmo

This can be validated utilizing the following python script:

import base64
import httpx


def txs(block_height: int | None = None) -> dict | None:
    page = 1
    page_total = 1

    # Loop through each page of txs
    while page <= page_total:
        headers: dict = {"Content-Type": "application/json"}
        json_data: dict = {"method": "tx_search",
                           "params": [
                               f"tx.height={block_height}",
                               False,
                               f"{page}",
                               "100",
                               "asc"
                           ],
                           "id": 1}

        if page == 1:
            txs_resp = httpx.post(url="http://65.109.20.216:26657/",
                                  json=json_data,
                                  headers=headers,
                                  timeout=60)
            txs = txs_resp.json()
        if page > 1:
            txs_extend_resp: dict = httpx.post(url="http://65.109.20.216:26657/",
                                               json=json_data,
                                               headers=headers,
                                               timeout=60)
            txs_extend = txs_extend_resp.json()
            txs["txs"].extend(txs_extend["txs"])
        page += 1
    return txs


txs = txs(block_height=9465040)

for tx in txs['result']['txs']:

    events = tx['tx_result']['events']

    for _, event in enumerate(events):
        if event['type'] == 'protorev_backrun':
            print(event['type'])
            for attribute in event['attributes']:
                attribute['key'] = base64.b64decode(
                    attribute['key']).decode('utf-8')
                attribute['value'] = base64.b64decode(
                    attribute['value']).decode('utf-8')
                print(attribute['key'], attribute['value'])
        else:
            continue
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