Fhenix homepage names October 21, FAQ does not

Fhenix has put encrypted smart contracts on a calendar line that its own answers do not repeat. The homepage retrieved on October 19, 2026 carries an enabled announcement bar: "Two days to mainnet. Encrypted smart contracts live on Ethereum and Arbitrum, October 21." The only networks in that sentence are Ethereum (ETH) and Arbitrum. Lower on the same page, the reply to when Fhenix will be available still says the company is on public testnets, with mainnet planned to follow.

The bar is not a release note. It does not name CoFHE, Fhenix's Fully Homomorphic Encryption (FHE) coprocessor. It does not name Base. It gives no application count, and it does not print a year. The page is a 2026 homepage, so the unmarked day falls in this month, but Fhenix did not print the year. The bar's only link leaves the site for an X status. The blog index has neither "October 21" nor the word mainnet. The blog sitemap was last modified on September 23, 2026. The homepage HTML is stamped last published on October 16, 2026, the same day as that URL's sitemap time. October 21 is five days after October 16, not two. Set beside "two days to mainnet", the verb "live" reads as a start line. The frequently asked questions (FAQ) use the other tense: testnets now, mainnet later.

What the homepage still tells builders

A block headed "MAINNET COMING SOON" tells visitors to encrypt before the launch and to subscribe for updates before mainnet. That is a waiting list. The FAQ says CoFHE is live on Arbitrum Sepolia, Ethereum Sepolia and Base Sepolia, with mainnet planned to follow. The Arbitrum answer repeats that the coprocessor is on Arbitrum Sepolia, with mainnet to follow, after a strategic investment from Tandem, the venture arm of Offchain Labs, the team behind that Layer 2 (L2). Base is named only as a Sepolia testnet. Builders are pointed to one Solidity import, import "@fhenixprotocol/cofhe-contracts/FHE.sol";, with the heavy FHE work described as running off-chain.

Related:Cronos targets EVM v1.8 mainnet move for 22 October

The company explainer repeats the three testnets and "mainnet planned to follow." The CoFHE introduction says the testnet is live on Ethereum Sepolia and refers to further Ethereum Virtual Machine (EVM) chains, without calling them mainnet. The CoFHE overview states no mainnet date. None of those pages publishes a chain ID or a contract address for an October 21 move.

The pitch is ahead of the note

The sales copy is confidential Decentralised Finance (DeFi): one token with two modes, balances shielded on demand, and no wrapper, no bridge and no new liquidity to bootstrap. The FAQ says Fhenix has raised over $22 million, including a $15 million Series A led by Hack VC and a $7 million seed round. It calls BIPROGY, described as a Japanese IT firm with annual revenue above $2.6 billion, the first institutional deployment of CoFHE. Those sums are the company's own account.

“This investment is more than capital — it’s an institutional vote of confidence from one of Japan’s major tech leaders.”

Guy Itzhaki, co-founder and CEO of Fhenix, said that on October 22, 2025, in the BIPROGY investment post. The line is about that round. It does not mention October 21.

The speed figures are labelled as research. The FAQ cites ePrint 2025/1781 and says threshold FHE decryption benchmarked 64,319 decryptions per second and 8.48 milliseconds of single-operation latency, about 20,000 times higher throughput and 37 times lower latency than the prior state of the art. Fhenix labels those figures as research measurements, not production numbers. The linked record is titled "High-Throughput Universally Composable Threshold FHE Decryption."

What would make the bar a release

Other networks have dated a mainnet move in a full post. Industry Spread has covered Cronos targeting an EVM v1.8 mainnet move for October 22 and Unichain scheduling an OP Enterprise mainnet move for October 29. Soda Labs raising $3 million for on-chain privacy and Aave Arc holding $57,000 show private or permissioned markets moving, or not, without a coprocessor launch.

For Fhenix, the missing page is specific. A CoFHE mainnet on Ethereum and Arbitrum would appear on the blog or in the docs, would say whether Base is in, and would replace "mainnet planned to follow." Until then October 21 is a bar and an X link. Encrypted smart contracts, on the developer text, remain a Sepolia product. A "two days" line beside an October 16, 2026 publish stamp does not close the gap.

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