Case closed#041DEEP TRACEClosed

The Front-Runner

Same block. Before and after. Classic sandwich.

Final

Closed

20/20Hits claimedNone left

Bounty per hit3,800USDC

Hunters entered34

Your clock—

Briefing

A trader swapped 180 ETH for $NOVA and got 9% less than quoted.

Somebody squeezed them.

In the same block, someone bought just before and sold just after.

Objective

Identify the bot contract that sandwiched the victim's swap.

Intelligence

VICTIM
POOL
BLOCK: 23,104,551
SLIPPAGE SUFFERED: 9.1%
KNOWN WALLETS: 8

Clues

3/3

01
The squeeze was tight: directly before, directly after.
02
Sandwich bots pay up to go first. The front-run burned more gas than the victim.
03
The back-run sold exactly what the front-run bought.

Trace map

Select a wallet to open its dossier

Transfer Contract call Flagged8 wallets · 10 txs

Ledger

Tx	Time (UTC)	Value	Method	Block · Pos
01	D-1 · 22:00:00	40 ETH	fund	23,099,864pos 25
02	13:37:11	9.5 ETH	swapExactETHForTokens → 1,000,000 NOVA44 gwei	23,104,550pos 58
03	13:37:23	2 ETH	swapExactETHForTokens30 gwei	23,104,551pos 1
04	13:37:23	12 ETH	swapExactETHForTokens → 590,000 NOVA45 gwei	23,104,551pos 2
05	13:37:23	40 ETH	swapExactETHForTokens → 1,912,000 NOVA92 gwei	23,104,551pos 3
06	13:37:23	180 ETH	swapExactETHForTokens31 gwei	23,104,551pos 4
07	13:37:23	1,912,000 NOVA	swapExactTokensForETH31 gwei	23,104,551pos 5
08	13:37:23	5 ETH	swapExactETHForTokens29 gwei	23,104,551pos 6
09	13:37:23	590,000 NOVA	swapExactTokensForETH28 gwei	23,104,551pos 8
10	13:37:23	1,000,000 NOVA	swapExactTokensForETH28 gwei	23,104,551pos 9

01 · D-1 · 22:00:0040 ETH
fund· blk 23,099,864 · pos 25
02 · 13:37:119.5 ETH
swapExactETHForTokens → 1,000,000 NOVA44 gwei· blk 23,104,550 · pos 58
03 · 13:37:232 ETH
swapExactETHForTokens30 gwei· blk 23,104,551 · pos 1
04 · 13:37:2312 ETH
swapExactETHForTokens → 590,000 NOVA45 gwei· blk 23,104,551 · pos 2
05 · 13:37:2340 ETH
swapExactETHForTokens → 1,912,000 NOVA92 gwei· blk 23,104,551 · pos 3
06 · 13:37:23180 ETH
swapExactETHForTokens31 gwei· blk 23,104,551 · pos 4
07 · 13:37:231,912,000 NOVA
swapExactTokensForETH31 gwei· blk 23,104,551 · pos 5
08 · 13:37:235 ETH
swapExactETHForTokens29 gwei· blk 23,104,551 · pos 6
09 · 13:37:23590,000 NOVA
swapExactTokensForETH28 gwei· blk 23,104,551 · pos 8
10 · 13:37:231,000,000 NOVA
swapExactTokensForETH28 gwei· blk 23,104,551 · pos 9

Evidence from the season's simulated network. Times in UTC.

Winners

20/20

On this case

Live

Quiet

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Acquiring intelligence…

Time (UTC)

From

Value

Method

Block · Pos

D-1 · 22:00:00

40 ETH

fund

23,099,864pos 25

13:37:11

9.5 ETH

swapExactETHForTokens → 1,000,000 NOVA44 gwei

23,104,550pos 58

13:37:23

2 ETH

swapExactETHForTokens30 gwei

23,104,551pos 1

13:37:23

12 ETH

swapExactETHForTokens → 590,000 NOVA45 gwei

23,104,551pos 2

13:37:23

40 ETH

swapExactETHForTokens → 1,912,000 NOVA92 gwei

23,104,551pos 3

13:37:23

180 ETH

swapExactETHForTokens31 gwei

23,104,551pos 4

13:37:23

1,912,000 NOVA

swapExactTokensForETH31 gwei

23,104,551pos 5

13:37:23

5 ETH

swapExactETHForTokens29 gwei

23,104,551pos 6

13:37:23

590,000 NOVA

swapExactTokensForETH28 gwei

23,104,551pos 8

13:37:23

1,000,000 NOVA

swapExactTokensForETH28 gwei

23,104,551pos 9