COTI is an Ethereum Layer-2 using garbled circuits for programmable on-chain privacy, supporting private DeFi, AI agent toolkits, a Privacy Portal with seven live ERC-20 tokens, and 20M COTI in Season 4 rewards.
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COTI is an Ethereum-compatible Layer-2 blockchain built around programmable, on-chain privacy — using a cryptographic technique called garbled circuits to let smart contracts operate on encrypted data without revealing the underlying inputs.
What COTI Is and Why It Exists
Most public blockchains expose every transaction to every observer. That design is intentional for auditability, but it creates a hard ceiling for real-world adoption: no enterprise will process payroll on-chain if salaries are visible to competitors, and no individual wants their wallet balance displayed to every counterparty they transact with. COTI was founded to solve this without sacrificing the composability and EVM compatibility that make Ethereum's ecosystem so productive.
COTI began as a DAG-based payments network (V1) with its own consensus mechanism. By 2024 it had pivoted sharply, launching COTI V2 as an EVM-compatible Layer-2 on Ethereum whose core differentiator is programmable privacy — meaning developers can decide which fields of a transaction or smart contract are shielded, and by how much, rather than applying privacy as an all-or-nothing toggle. V1 is being retired by Q3 2026, with users in the VIPER staking program and on hardware wallets such as Ledger needing to migrate to V2 before the sunset.
COTI Foundation announces the upcoming launch of COTI Treasury V2, inviting users to link a MetaMask address to their VIPER wallet to receive V2 tokens.
Readers engage COTI through two opposing threat vectors — the SEC naming it an unregistered security (existential, external) and internal token-migration mechanics (Treasury V2 wallet linking) — revealing that COTI's privacy-tech narrative only converts clicks when survival stakes or concrete holder action are on the line, not product announcements alone.
The Technology: Garbled Circuits and ZK in Parallel
COTI's primary privacy mechanism is garbled circuits (GC), a protocol for secure multi-party computation (MPC) first described by Andrew Yao in the 1980s. COTI claims to be the first project to deploy a production implementation of garbled circuits on a live blockchain. In practice, GC allows two or more parties to jointly compute a function over their private inputs and learn only the output — neither party sees the other's raw data. Applied to smart contracts, this means token balances, trade sizes, or AI agent instructions can remain encrypted while the contract still executes correctly.
The project says garbled circuits run approximately 3,000× faster than fully homomorphic encryption (FHE) for equivalent computations and require roughly 250× less storage, making them more tractable for real transaction throughput. After one year of mainnet operation (as of mid-2026), COTI's GC network has processed over 120 million transactions across 80+ partners.
Alongside GC, COTI is developing COTI Nightfall, an enterprise-grade zero-knowledge (ZK) rollup layer. Nightfall targets different use cases from the GC layer — particularly private settlement of tokenized real-world assets (RWAs) at scale — and was in testnet as of early 2026 with mainnet deployment planned later in the year. The dual-stack architecture means builders can choose the privacy primitive that fits their throughput, latency, and compliance profile.
Privacy Portal and Private ERC-20 Tokens
The most visible on-chain application is the COTI Privacy Portal, which launched with seven live private ERC-20 tokens. The Portal lets users convert standard ERC-20 assets into their privacy-wrapped equivalents, where balances and transfer amounts are encrypted on-chain. Supported assets at launch include stablecoins and ecosystem tokens; price feeds are provided by Band Protocol, which expanded its data infrastructure specifically to support the Portal.
Builders can deploy their own private ERC-20 tokens using the same primitives, extending privacy to NFTs, tokenized assets, and more complex DeFi positions. Private DeFi on COTI is designed to be cross-chain compatible: the roadmap item called Privacy-on-Demand aims to let developers on Ethereum mainnet, other L1s, and L2s integrate COTI's garbled-circuit stack without requiring users to bridge to COTI Network itself.
- 01SEC security classification threat
Being explicitly named in the SEC's Binance suit as an unregistered security drew the largest click share by a factor of more than three over the next headline, making regulatory survival the dominant reader concern.
- 02Treasury V2 migration mechanics
The requirement to link a MetaMask address to a VIPER wallet to receive V2 tokens triggered strong reader urgency around what holders needed to do to preserve their position.
- 03Tokenomics overhaul and dilution risk
Multiple headlines across the tokenomics update drew repeat engagement, with readers specifically seeking out critical takes on whether multi-chain expansion and unproven burn models would dilute holders.
- 04Nightfall ZK rollup dual-mainnet launch
COTI operating a second ZK-based mainnet alongside its Garbled Circuits chain attracted readers tracking whether the enterprise privacy pivot adds token utility or just complexity.
- 05Vibe Code Challenge developer push and security failures
The community coding contest generated sustained click interest, peaking when the challenge was closed early due to security risks discovered in AI-generated privacy builds.
- 06Private RWA and institutional validation
The first private real-world asset deployed on COTI testnet, paired with Vitalik Buterin's public endorsement of Garbled Circuits, attracted readers gauging whether COTI's enterprise claims had real institutional backing.
AI Agents and the Web4 Thesis
One of COTI's more distinctive bets is what the project calls Web4 — the thesis that AI agents will become first-class on-chain actors, trading, managing liquidity, and executing complex multi-step strategies autonomously, and that privacy is a prerequisite for this to work safely. An agent's strategy should not be readable by front-runners; its wallet balance should not be exploitable by adversaries watching the mempool.
COTI has released Agent Skills, an open-source toolkit of eight skill modules (48+ tools) that expose COTI's privacy infrastructure to AI frameworks including Claude, OpenAI Codex, OpenClaw, Manus, and Hermes. Using these skills, an AI agent can programmatically create wallets, deploy private tokens, send encrypted on-chain messages, and interact with DeFi protocols — all from within a standard agent loop, without the agent developer writing custom blockchain integration code.
This connects directly to Carbon DeFi, COTI's native DeFi layer, which has an MCP (Model Context Protocol) integration allowing agents to execute full DeFi workflows autonomously: from wallet creation and funding through liquidity provision and automated trading strategy deployment. Agents that generate on-chain usage through these tools are eligible for the Web4 Grant Program, which distributes $COTI rewards every 14 days based on verifiable on-chain activity — no application form required.
To lower the barrier to building private AI agents, COTI ran a Vibe Code Challenge: Agent Edition — a 60-day competition with 175,000 $COTI in prizes. The challenge accepted submissions from participants using any AI-assisted or "vibe coding" toolchain, with no prior blockchain development experience required, explicitly signalling that the target builder is an AI-native developer rather than a traditional Solidity programmer.
Earn Program and Ecosystem Incentives
COTI's primary growth-loop mechanism on the retail side is the Earn program. Season 4, branded "Velocity" and live as of mid-2026, distributes 20,000,000 $COTI in rewards over 20 weeks. Participants earn Token Points (TPS) by holding assets on COTI Network, deploying strategies on Carbon DeFi, and completing social and partner missions. AI agents can also earn through Carbon DeFi and the PriveX trading interface using COTI Agent Skills, blurring the line between human and autonomous participant.
Season 3 closed before Season 4 launched, with accumulated reward claims and point-stacking opportunities carrying forward. The program structure is deliberately iterative: each season introduces new mission types tied to ecosystem milestones, such as the Privacy Portal launch and partner integrations.
SEC Binance suit alleges BNB, BUSD, SOL, ADA, MATIC, FIL, ATOM, SAND, MANA, ALGO, AXS, and COTI are securities
- 2023-06regulatory
SEC names COTI as unregistered security in Binance complaint
- 2025-03milestone
Vibe Code Challenge extended then closed early over AI build security risks
- 2026-01milestone
Zoniqx deploys first private RWA on COTI testnet using Garbled Circuits
- 2026-02launch
COTI announces Nightfall ZK rollup as second enterprise mainnet alongside Garbled Circuits
- 2026-03governance
2026 tokenomics update published: multi-chain expansion, fee-driven burns, single-token model
- 2026-04milestone
EEA Privacy Working Group launched with COTI, Consensys, and Polygon as founding members
- 2026-05launch
COTI Nightfall formally launched on Ethereum Layer 2
Ecosystem Partnerships
COTI has pursued a partnership-led expansion strategy rather than relying solely on organic developer adoption. Notable collaborations include:
Midnight Network — COTI and Midnight Network (a privacy-focused Layer-1 in the Cardano ecosystem) announced a joint initiative to advance the broader Web3 privacy ecosystem. The partnership covers privacy R&D, cross-ecosystem builder support, and shared privacy standard-setting, with neither project treating the other as a competitor. The alignment reflects a view that privacy infrastructure is at too early a stage for winner-take-all dynamics.
Band Protocol — Band's decentralized price feed network was extended to COTI's testnet and mainnet to provide tamper-resistant oracle data for private DeFi positions, where on-chain transparency cannot be used to verify pricing by inspection.
Google Vertex AI — COTI hosted a developer session covering production-ready AI agent construction with Google Vertex AI, including tool-calling, multi-step reasoning, memory, and secure deployment on COTI infrastructure.
Tokenomics
$COTI is the native utility and gas token of COTI Network, with a maximum supply of 2 billion tokens and roughly 1.8 billion in circulation as of 2026. A tokenomics update announced in March 2026 introduced deflationary mechanics tied to privacy-specific activity: 100% of gas fees from private transactions flow into a community-controlled wallet, while 50% of fees from privacy bridges and Privacy-on-Demand services are burned, with the remainder funding ecosystem growth. A forthcoming Treasury V2 will introduce a self-balancing staking model that dynamically adjusts yield based on participation rates.
The deflationary design creates a direct link between privacy adoption — the core product metric COTI cares about — and token supply reduction, rather than relying on arbitrary scheduled burns.
- RegulatoryHigh
The SEC's Binance suit explicitly classified COTI as an unregistered security, creating direct U.S. legal exposure that was unresolved at the time of filing and remains a structural overhang.
- Smart-contract / TechnicalMedium
The Vibe Code Challenge was shut down early after security vulnerabilities were found in AI-generated privacy builds, exposing quality-control weaknesses in COTI's developer ecosystem at a critical growth phase.
- Tokenomics / DilutionMedium
The 2026 tokenomics update introduces multi-chain fee-and-burn mechanics that critics flagged as unproven; value capture depends entirely on cross-chain fee volume that had not yet materialized at announcement.
- Liquidity / MarketMedium
Operating dual mainnets (Garbled Circuits and Nightfall) splits developer and liquidity attention, and the single-token model's success depends on aggregating fees from chains with different finality and user profiles.
- AdoptionMedium
Despite 110M+ transactions and 80+ partners claimed at the V2 one-year mark, flagship use cases such as private RWAs remained at testnet stage, making production traction unverified.
Competitive Landscape
COTI competes in a cluster of projects targeting on-chain privacy, each using a different cryptographic approach. Aztec and Penumbra use ZK-proofs for shielded transactions. Secret Network uses trusted execution environments (TEEs). Aleo builds a ZK-native L1. COTI's distinguishing claims are that garbled circuits offer better latency and storage efficiency than ZK-based alternatives for general-purpose computation, and that EVM compatibility lowers the switching cost for existing Ethereum developers. The Nightfall ZK layer gives COTI coverage in the ZK segment as well, positioning the dual-stack as a more complete answer to enterprise privacy requirements.
Outlook
COTI's near-term trajectory is defined by three parallel pushes: bringing Privacy-on-Demand to external chains (Ethereum mainnet first), growing the AI agent ecosystem through the Web4 Grant Program and Agent Skills integrations, and completing the V1-to-V2 migration before the Q3 2026 deadline. The Midnight Network partnership signals an appetite for coalition-building across the privacy sector rather than isolated protocol development.
Whether garbled circuits can become a standard privacy primitive in Web3 — the way ZK-proofs have — depends on developer adoption, which the Earn program and Vibe Code Challenge are explicitly designed to accelerate. The project's framing of AI agents as the primary end-users of on-chain privacy is a longer-duration thesis whose validation will play out over the next two to three years.
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