JaredFromSubway

The origin of "Jared from Subway" in crypto: March 2023

JaredFromSubway appeared on Ethereum mainnet in March 2023 (ENS: jaredfromsubway.eth, also tagged jared_eth on Etherscan), around the same window as the SEC sued Coinbase and Binance for unregistered securities trading. The name is a nod to the satirical Twitter account "Jared from Subway", the public face of every sandwich-attack joke in DeFi — the moniker stuck and Jared from Subway crypto became shorthand on Twitter and crypto media for the highest-volume sandwich operator on Ethereum. Within a few weeks it was consistently profitable, and within months it was widely regarded as the dominant sandwich bot on Ethereum, frequently topping weekly MEV leaderboards.

The bot's rise coincided with a meme-coin frenzy on Uniswap (PEPE, MILADY, MOG, HARRY POTTER OBAMA SONIC 10 INU, and dozens of derivatives), which generated massive sandwich opportunities — tens of thousands of users buying low-cap tokens with wide slippage tolerances. JaredFromSubway was among the most active operators through that period and held its lead afterward.

The contract

The JaredFromSubway smart contract is deployed at 0x1f2F10D1C40777AE1Da742455c65828FF36Df387. Its source code is not verified on Etherscan, keeping the exact attack logic confidential. The bytecode reveals the high-level structure: custom entry points for swap-only attacks, sandwich attacks, JIT liquidity, and combined swap-JIT bundles. The contract holds a small ETH float for gas and accumulates WETH + stablecoins from successful attacks.

Because the contract is on-chain and every transaction is publicly auditable, its entire activity history is independently verifiable via Flashbots MEV-Inspect and direct Etherscan analytics. JaredETH, by contrast, runs its own separate arbitrage contracts — Arbitrage v1.0 0x00000000009E50a7dDb7a7B0e2ee6604fd120E49 and Arbitrage v2.0 0x81463B0f960f247f704377661ec81C1fd65b5128 — all proven on-chain and verifiable on Etherscan.

5-layer and 7-layer sandwich attacks

A traditional sandwich attack is 3 transactions: front-run, victim, back-run. JaredFromSubway is known for multi-layer sandwiches:

• 5-layer: front-run A → victim A → center swap → victim B → back-run. Two victims are trapped in one bundle, with the center swap moving price between them so victim B pays even more.
• 7-layer: three victims, two center swaps, one front-run, one back-run. The mathematics of slippage tolerance get significantly harder, but the profit per bundle scales with the number of victims.

Multi-layer sandwiches require precise sizing — each layer must respect every victim's slippage tolerance, or one of them reverts and the whole bundle fails. The off-chain solver that computes optimal layer sizes is the bot's most closely guarded piece of IP.

The swap-JIT combo

JaredFromSubway is also associated with combining sandwich attacks with JIT liquidity in a single bundle. Step 1: swap to move the price (front-run). Step 2: add concentrated liquidity to the pool via a direct Uniswap V3 pool call (bypassing the NonfungiblePositionManager NFT layer). Step 3: victim swap executes at the degraded rate, and the bot collects LP fees on the victim's trade. Step 4: remove liquidity and back-run the swap. Three revenue streams from one block: price manipulation + LP fees + arbitrage tail.

The builder bribe strategy

MEV bundles include a coinbase transfer — an ETH tip paid directly to the block builder that includes the bundle. Most competing MEV bots tip a large share of their expected profit; JaredFromSubway is known for tipping an unusually high percentage, keeping only a thin margin per attack. At scale, across many thousands of bundles, even a thin margin compounds.

The ultra-high bribe rate is a deliberate strategy. By outbidding competitors on tip percentage, JaredFromSubway secures inclusion priority across major relays — Flashbots Protect, Beaverbuild, Titan, rsync-builder, BloXroute Max, and Builder0x69 — giving it one of the highest block-presence rates of any sandwich bot on Ethereum during peak activity.

MEV attribution and the obfuscation arms race

Third-party MEV attribution pipelines classify on-chain transactions as sandwiches, arbitrages, JIT liquidity, or liquidations and tag them to specific operators. JaredFromSubway's multi-layer sandwiches initially broke standard attribution heuristics: classifiers expected 3-transaction patterns, and the 5- and 7-layer structures didn't match. For several weeks the bot's profit was misattributed to multiple smaller operators, masking the true scale of the operation. Detection logic has since been updated across the open-source pipelines (most notably Flashbots MEV-Inspect), but newer techniques (swap-JIT, dual-purpose transactions) continue to obfuscate attribution at the margin.

How JaredETH differs — and how to get it

JaredETH is not JaredFromSubway and does not run sandwich attacks. JaredETH is a production on-chain arbitrage system — cross-DEX and triangular arbitrage, multi-hop and cross-pool routes, and JIT liquidity on Uniswap V3, across Uniswap V2/V3, SushiSwap, Curve, Balancer, and PancakeSwap, funded from own capital or flash loans (Balancer 0%, Aave V3 0.05%, Uniswap V3, Maker).

JaredETH runs the full arbitrage engine — cross-DEX, triangular, multi-hop, cross-pool, and JIT liquidity routes — with flash-loan funding and direct integration with major Ethereum block builders. Its on-chain activity is proven and verifiable on Etherscan. For a MEV arbitrage bot you can run yourself, visit MevLex.com.

Further reading and references

• Flashbots MEV-Inspect (mev-inspect-py) — Open-source MEV classification pipeline maintained by Flashbots — the canonical reference for attributing JaredFromSubway sandwich activity on-chain.
• Bankless coverage of JaredFromSubway — Editorial coverage of the operator's emergence as the dominant Ethereum sandwich bot in 2023.
• Etherscan contract page — Direct on-chain record of every transaction the bot has submitted since March 2023.