— Encrypted block sales for token foundations

Sell your treasury without leaking it.

Zerith is the private auction protocol for token foundations and market makers. Bidders compete with sealed prices, the chain clears a fair settlement, losing bids stay encrypted forever. No leaked order flow, no front-running, no slippage to MEV. Built on Fhenix fully homomorphic encryption.

Sepolia testnet · gas included · nothing to install

— The problem

On public chains, every number is exposed.

MEV bots extract $500M+ annually by front-running trades. Auction bids are visible, enabling sniping. Portfolio values are public, making holders targets. Salaries, vendor payments, treasury moves — all readable by anyone with a block explorer.

— Three capabilities

One protocol. Three jobs.

Sealed block sales

Sell

Sell a token block to the highest sealed bid. Losing bids are never decrypted — not even after the sale.

Open

Encrypted treasury

Hold

Keep balances in an encrypted vault and prove you hold at least X without revealing the number.

Open

Private payroll

Pay

Split payments across recipients. Each sees only their own amount; the total payout is public.

Open

— How FHE works

Compute on ciphertext. Reveal nothing.

Encrypt client-side

Your values are encrypted via @cofhe/sdk before leaving your browser. A ZK proof guarantees validity without revealing the plaintext.

Compute on ciphertext

Smart contracts run FHE operations (add, compare, select) directly on encrypted data. Values never decrypt on-chain.

Unseal selectively

Only authorized parties decrypt via cryptographic permits. The chain stores hashes. Validators see noise. You see truth.

— Innovation

What only FHE makes possible.

Losers stay sealed

Bids are compared as ciphertext. Only the winning bid is ever made public; every other bid stays encrypted for good.

Blind Floor reserve

A seller's reserve price is encrypted and never decrypted. The chain only reveals whether the winning bid met it.

Proof of Reserves

Prove your vault balance is at least a threshold, with the comparison done on ciphertext. The balance itself stays private.

— Privacy roadmap

— Privacy StagesRead the framework

How private is "private"?

Fhenix's public framework grades blockchain privacy on a 3-tier ladder. We show you exactly where Zerith sits — and where we're heading.

— Stage 0

Trust the Box

Privacy depends on hardware enclaves (TEEs). Fast — but if the box is compromised, every secret leaks at once.

Most current 'private' L2s sit here.

You are here

— Stage 1

Pure Cryptography

Math, not hardware. Smart contracts compute directly on encrypted data with FHE. No TEE, no single trusted party.

Zerith is here today, powered by Fhenix CoFHE.

— Stage 2

Defense in Depth

Distributed key generation, permissionless operators, optional TEEs, economic incentives. Privacy survives partial compromise.

Where Zerith is heading as Fhenix's threshold network matures.

— Composability

One vault · Four flows · Zero leaks

Compose encrypted ops across the whole stack.

Every operation settles through one shared encrypted vault. A deposit can flow through launches, payments, trades, and hires — never touching plaintext in transit. That's the architectural moat no fork can copy in a weekend.

Source

Encrypted Deposit

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