ZetaChain

ZetaChain's own financing announcement says the project was founded in 2021 and names Ankur Nandwani, Panruo Wu and Brandon Truong among a contributor group approaching 150 people. It does not assign them a formal founder hierarchy. A later regulatory paper identifies Meta Protocol, Inc.—registered in Delaware on 30 July 2021—as the company providing software development and ecosystem support.

Their design target went beyond message passing between similar chains. A contract on ZetaChain would own the application state while observers watched Bitcoin, Ethereum and other ledgers and a distributed signer wrote transactions back. Making Bitcoin a first-class destination forced the project to solve custody and signing because there was no Bitcoin-side general contract to do that job.

During 2022 the team launched Troy locally, Sparta as a development network and successive Athens testnets. The year-end review says the tests delivered the first version of the EVM and ZRC-20 standard and exercised a Bitcoin smart-contract path. By the August 2023 funding announcement, the project reported 1.7 million testnet users and 13 million transactions, figures that measured a rehearsed environment rather than mainnet demand.

The $27 million equity round announced on 17 August 2023 brought in Blockchain.com, Human Capital, Jane Street Capital and others. It financed the step that mattered most: on 31 January 2024 ZetaChain said Mainnet Beta was live with Bitcoin, Ethereum and BNB Chain. ZetaHub opened claiming, staking and governance; 31.5 million ZETA from the user pool went to eligible ZetaLabs testers.

The whitepaper explains the machinery plainly. Each validator is paired with an observer and a signer share. Observations become ZetaChain state only after consensus; outbound transactions need a threshold signature. The combined public address can therefore hold native BTC even though no participant is meant to reconstruct the full private key alone.

That is not the absence of custody. ZetaChain's April 2025 developer article says deposited ETH is locked in its Ethereum custody and matching ZRC-20 ETH is minted for the contract on ZetaChain. The same accounting idea lets an app manipulate connected assets from one execution layer. It removes a bridge integration from the app developer's desk, while concentrating observation, signing and asset accounting in the ZetaChain protocol.

The initial 2.1 billion ZETA was split among seven pools. Treasury received 24%, core contributors 22.5%, purchasers and advisers 16%, ecosystem growth 12%, user growth and validator rewards 10% each, and liquidity incentives 5.5%. Unlocks differ by pool. The 2025 MiCAR paper names Meta Protocol, Inc. as the party seeking trading admission and records 504 million ZETA for treasury; it describes protocol use and governance, not redemption for money or a share of that company.

On 23 October 2024 the protocol permanently anchored 1.5 billion ZETA to the native network by sending Ethereum-side capacity to a null address. Only 600 million could thereafter move back to Ethereum as ERC-20 ZETA. The team stressed that neither the 2.1 billion total nor circulating supply changed. This was a location and security constraint, not a burn that made holders richer overnight.

The first mainnet path used separate TSS deposit addresses, ERC-20 custody contracts and connector contracts. Gateway, released in July 2024 and documented for Universal Apps in 2025, gathered those paths behind a common interface and added calls, deposits, withdrawals and revert handling. Solana support later showed the benefit, but it also required chain-specific programs, asset support and observer code; “build once” still depends on each integration being implemented and maintained.

The node and contract repositories put ZetaCore, ZetaClient and Gateway in one operational story. Consensus, observers, signers, custody migrations, pausing and chain parameters evolve together. The EVM contracts are UUPS-upgradeable and divide authority among admin, pauser, TSS and asset-handling roles; admins can change TSS, fees, allowed deposits and custody or connector references. Those controls can support migrations and incident response, but a holder cannot infer the current role owners from source code alone. ZETA delegation secures home consensus, not the external TSS account with Bitcoin's own security.

On 27 January 2026, ZetaChain 2.0 extended the fragmentation argument from chains to AI models. At that announcement Anuma was an early-access showcase and the model portal, private memory and developer tools were presented as an expansion plan. The status changed on 27 April, when Anuma launched publicly. A 1 June project update reported 60,000 users in its first month and listed the Anuma app, wallet-based AI identity, encrypted memory, multi-model switching and ZETA Access as live products.

The June update also changed the project’s direction: ZetaChain said it was dedicating itself entirely to AI and would wind down its Bitcoin, Solana, Arbitrum, Base, BNB Smart Chain, Polygon, Avalanche, Sui and TON connections over the following months, with withdrawals left open for a defined period. The 1 June 2026 update links a separate wind-down schedule. Its exact current terms were not obtained in this review because the linked Notion page returned 404. The article alone cannot establish completion of every route closure or the applicable per-chain deadlines. In the reviewed 1 June update, Private Computer, browser and mobile apps, permissioned memory and creator tools were upcoming; an agent marketplace, x402 payments and on-chain access logs were exploratory. The update reported Anuma and ZETA Access as live, but did not establish production deployment of the proposed decentralized inference or Memory Guardian staking roles.