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z0r0z

z0r0z is a solo Ethereum developer who ships smart contract systems with verified source, no admin keys, and no upgrade paths. The handle is publicly tied to Ross Campbell — appearing on podcasts, GitHub, and ENS records under that name — but the body of work travels under z0r0z and ross.wei, and that is how this entry will refer to him.

The current center of gravity is zFi, a self-described "superdapp" consolidating Swap, Liquidity, Coins, Predict, Orderbook, Domains, and DAO under a single IPFS-pinned frontend. Around zFi sit several adjacent contracts deployed by the same author — Wei Name Service, SLOW, Lido Harvester — and a separate Bitcoin meta-protocol called Tacit.

Summary

  • Handle: z0r0z. WNS handle: ross.wei. ENS: z0r0z.eth. X: @z0r0zzz.
  • Primary deployer EOA: 0x1C0Aa8cC...855A20 (etherscan) — currently EIP-7702-delegated on Ethereum. Activity also observed on Arbitrum and Polygon (see On-chain Footprint).
  • Background per his GitHub bio: corporate attorney → legal engineer at ConsenSys / OpenLaw → core developer at SushiSwap → independent.
  • Co-founder of LexDAO (legal engineering collective) and KaliDAO (tokenized multisig); founder of NaniDAO (account-abstraction + LLM protocol).
  • Maintainer of Zolidity; contributor to Solady.
  • Author of the current zFi stack: zFi superdapp (Swap, Liquidity, Coins, Predict, Orderbook, Domains, DAO), Wei Name Service, SLOW non-custodial transfer wrapper, Lido Harvester, Tacit confidential token meta-protocol on Bitcoin.
  • 113 public repositories on github.com/z0r0z as of 2026-05-16. Default license is MIT or AGPL v3.0.
  • Distinguishing on-chain signature: vanity contract addresses prefixed 0x00000000..., deployed via per-contract ephemeral CREATE2 factories sharing identical bytecode (see On-chain Footprint for the list).

Identity

z0r0z is not pseudonymous in the operational sense — the handle, the ENS name, and the personal name all resolve to the same individual across X, GitHub, and long-form podcast interviews. His GitHub bio lists prior roles in law and at ConsenSys / OpenLaw and SushiSwap, and describes him as a "codeslaw chef." The X display name ross.wei is the WNS name pointing at the same address — which is itself the deployer of the .wei registry contract.

Themes & Modus Operandi

Four engineering tells recur across the deployments.

Builds in the Open

Every project in the current zFi stack observed by DNZN ships with verified Etherscan source on or near the deployment date, an MIT or AGPL repository, and — for SLOW — an on-chain HTML dapp embedded directly in the contract via SSTORE2 (SLOW carries roughly 49 KB of HTML across two SSTORE2 chunks, each ~24.5 KB).

No third-party audit reports have been observed for the recent flagship contracts (zRouter, zQuoter, Lido Harvester, SLOW). The Lido Harvester README claims an AI-assisted scan by Zellic returned "no valid findings"; no traditional audit has been published.

Singleton Architecture

A repeated thesis in his public writing (see z0r0z.eth.limo, Apr 15 2025) is that Ethereum L1 should be scaled by consolidating common functions into singleton contracts that share state, not by hard-fork-driven throughput increases. This shows up concretely in his stack:

  • Coins and zAMM use ERC-6909 to collapse many tokens into one storage tree
  • The .wei registry is a single ERC-721 contract for the entire namespace
  • zRouter is a single 1,660-line standalone contract aggregating Uniswap V2/V3/V4, SushiSwap, Curve, and zAMM
  • Dagon packages governance + signature verification into one ERC-6909 contract

No Admin, No Upgrade, No Fee

The pattern across SLOW, zRouter, and zQuoter is consistent: no proxy, no pause, no protocol fee, and either no Ownable (SLOW, zQuoter) or a narrow Solady-derived owner role (zRouter, Lido Harvester). zFi states zero protocol fees on its swap router.

Vanity Addressing

Every flagship zFi contract lives at an address with multiple leading zero bytes. Each deployment uses its own short CREATE2 factory contract — all sharing identical 38-byte bytecode — deployed by the same EOA. The factories themselves are also at mined addresses (see On-chain Footprint for the per-contract factory list).

Notable Work / Projects

PROJECT ROLE DESCRIPTION LINKS
zFi Sole author "Superdapp" consolidating Swap, Liquidity, Coins, Predict, Orderbook, Domains, and DAO under one IPFS-pinned frontend at zfi.wei.is DNZN overview
zRouter Sole author On-chain DEX Aggregator across Uniswap V2/V3/V4, SushiSwap, Curve, zAMM. Standalone, no off-chain dependencies DNZN analysis · 0x00000000...F600e4 (etherscan)
zQuoter Sole author Stateless multi-protocol quoter that returns ready-to-execute calldata for zRouter DNZN analysis · 0x658bF1A6...006A5F (etherscan)
Lido Harvester Sole author Permissionless ~100-line harvester that converts Lido Rebasing Token yield to ETH and routes it into ZORG buybacks via the zOrg Safe DNZN analysis · 0x00000000...768E22 (etherscan)
SLOW Sole author Non-custodial timelock-and-co-sign ERC1155 wrapper for ETH and ERC-20 transfers, with optional per-user guardian co-sign and tipped relayer settlement DNZN analysis · 0x00000000...feAaBC (etherscan)
Wei Name Service (WNS) Sole author Single-ERC-721-contract naming protocol for .wei names. Length-based pricing: 0.5 ETH/yr (1-char), 0.1 ETH/yr (2-char), 0.05 ETH/yr (3-char), 0.01 ETH/yr (4-char), 0.0005 ETH/yr default (5+ char). Notable in that 1- and 2-character names are registerable, which the canonical ENS .eth registrar does not permit. IPFS-served at wei.domains .wei registry 0x00000000...c242EB (etherscan)
Tacit Sole author Confidential token meta-protocol on Bitcoin. Pedersen commitments + bulletproof range proofs for amount hiding, Groth16 zk-SNARK mixer pool for unlinkability DNZN project overview · tacit.finance · GitHub
NaniDAO Founder Protocol and DAO for "smarter accounts" combining Ethereum account abstraction with open-source LLMs. NANI token at 0x00000000...077c97 (etherscan) GitHub
KaliDAO Co-founder ERC-1155-based tokenized multisig and DAO tooling GitHub
LexDAO Co-founder Legal engineering collective; predates the current stack —
Solady Contributor Gas-optimized smart contract library by Vectorized GitHub
Zolidity Maintainer Personal pattern library — "Zero-to-One Solidity with Simplicity-first" GitHub
SushiSwap (historic) Core developer Listed in his GitHub bio; specific contributions and dates not verified here —

His repos include many additional contracts — ctc (Check The Chain price oracle), IOUSDC (gas-less USDC transfers via EIP-3009), cobie (escrow for bettable outcomes), multisig, cells (2-of-2 wallet), sstore4, governator, helios, dagon, Baal, keep, ie (intents engine). The list above is not exhaustive.

Timeline

%%{init: {'theme': 'base'}}%%
timeline
    title z0r0z — Project Timeline
    section Pre-Crypto
        ~2010s : Corporate attorney
    section Legal Engineering
        pre-2021 : LexDAO co-founder
                 : Legal engineer at ConsenSys / OpenLaw
    section DeFi Engineering
        ~2021    : SushiSwap core dev
                 : KaliDAO co-founder
        2022-2023 : NaniDAO founded
    section zFi Stack
        Aug 2025 : zQuoter deployed
        Feb 2026 : zRouter deployed
                 : zFi superdapp public
        Mar 2026 : Lido Harvester deployed
        Apr 2026 : SLOW deployed (on-chain HTML dapp)
        May 2026 : Tacit mixer setup finalized (2,227 contributors)

Figure 1: Career timeline. Pre-2021 roles are sequenced from his GitHub bio; exact start and end dates are not confirmed here. Flagship contract deployment dates are derived from on-chain creation transactions verified by DNZN.

On-chain Footprint

Primary Deployer

FIELD VALUE
Address 0x1C0Aa8cC...855A20 (etherscan)
ENS z0r0z.eth
WNS ross.wei
Account type EOA with active EIP-7702 delegation (code prefix 0xef0100, delegated implementation 0x612373d7...0951d3 (etherscan))
Multi-chain presence Activity observed on Ethereum, Arbitrum (arbiscan), and Polygon (polygonscan) at the time of writing

Note: this EOA is not the only key in the family. The zQuoter contract was deployed by a separate address (0x999657A4...B44E1C (etherscan)) which was itself first funded from the primary deployer.

Deployed Contract Family (DNZN-tracked)

Each flagship contract is deployed via its own short CREATE2 factory. The factories share identical 38-byte bytecode and are themselves deployed at mined vanity addresses by the primary EOA, then used immediately to deploy the actual contract. The table below pairs each contract with the factory that produced it. All contracts and factories are on Ethereum mainnet.

CONTRACT ADDRESS CREATE2 FACTORY
zRouter 0x00000000...F600e4 (etherscan) 0x436de0e6...598523 (etherscan)
zQuoter 0x658bF1A6...006A5F (etherscan) — (deployed directly by EOA 0x999657A4...B44E1C (etherscan), not via a factory)
Lido Harvester 0x00000000...768E22 (etherscan) 0x5c2271fd...d21822 (etherscan)
SLOW 0x00000000...feAaBC (etherscan) 0xac5fb2e1...DaC6Ea (etherscan)
SLOWGate 0xb8B546b9...9ef3D4 (etherscan) SLOW constructor (CREATE2 child of SLOW)
zAMM V0 0x00000000...24C860 (etherscan) 0x25bfaa48...82a6a3 (etherscan)
zAMM V1 0x00000000...D616eD (etherscan) 0x42544526...60b5a8 (etherscan)
pAMM 0x00000000...2f07C0 (etherscan) 0x15ed6532...e406d1 (etherscan)
.wei Registry 0x00000000...c242EB (etherscan) 0x62e4816a...fb6eff (etherscan)
NANI Token 0x00000000...077c97 (etherscan) 0xba7b9107...31b007 (etherscan)

This list is not exhaustive. Cross-reference zFi project overview and the individual contract analyses for in-depth treatment.

Public Presence

CHANNEL URL NOTES
X / Twitter @z0r0zzz Display name ross.wei
GitHub github.com/z0r0z 113 public repositories as of 2026-05-16. License defaults to MIT or AGPL v3.0
Personal site z0r0z.eth.limo ENS-resolved, IPFS-served writing
zFi zfi.wei.is The flagship superdapp
Tacit tacit.finance · tacit.wei.is Confidential tokens on Bitcoin
Wei Name Service wei.domains .wei registry frontend
NaniDAO github.com/NaniDAO Org for account-abstraction + LLM work
KaliDAO github.com/kalidao Org for the tokenized multisig stack
Podcasts Law of Code #30, #111; Web3 Galaxy Brain Long-form interviews under his real name

Observations

A few things to keep in mind when reading this body of work:

  • ◇ One author covers the entire stack. The primary deployer EOA is a single point of failure for the family even where the deployed contracts themselves have no admin.
  • ◇ No third-party audit reports have been observed for the recent flagship contracts. Verified source and open repos are not equivalent to an audit, and contracts that cannot be upgraded also cannot be patched if a flaw is found post-deployment.
  • ◇ Vanity addressing and ENS / WNS records are useful identity signals for attributing a deployment to this family, but they are not security guarantees. The contracts are only as safe as the code at the time of deployment.
  • ◇ The Tacit project is on Bitcoin while the rest of the stack is on Ethereum L1 and L2s. No bridging logic between the two stacks has been observed in the contracts surveyed for this entry.

References

Changelog

DATE AUTHOR NOTES
2026-05-16 Artificial. Generated by robots. Gas: 110 tok
2026-05-16 Denizen. Reviewed, edited, and curated by humans.