PRIVATE OTC DESK · POWERED BY ZAMA fhEVM

Trade big. Nobody peeks.

Samar is a confidential OTC desk. Post a large trade and the size, the price, everything stays fully encrypted on-chain. Counterparties settle atomically without ever seeing a plaintext number.

INTENT #IX_0043OPEN
MAKER SELLS0x7f4e2a91c8$cUSDC
MAKER WANTS0x7f4e2a91c8ΞcETH
reserve hidden · counterparty-scoped view
NO FRONT-RUNNING · NO MARKET IMPACT · ZERO INFO LEAKAGE · ATOMIC SETTLEMENT · END-TO-END ENCRYPTED · EVEN VALIDATORS ARE BLIND ·

Why whales avoid public DEXs

Front-running / MEV

Your order sits in the mempool in plaintext. Bots see it, jump the queue, and sell it back to you at a worse price.

Market impact

A visible size moves the book against you the moment it lands. Everyone prices in your exit before you finish it.

Info leakage

Every wallet, every counterparty, every amount is public forever. Your whole strategy is readable by anyone with an explorer.

Four steps, zero plaintext

01

Create intent

Encrypt your sell size and ask locally, then post the ciphertext on-chain.

FHE.fromExternal
02

Grant access (optional)

For a directed quote, scope a decryption grant to one counterparty. Nobody else can peek.

FHE.allow
03

Fill or bid

A taker matches your terms — Direct fill now, sealed bids later.

acceptIntent · submitBid
04

Atomic settle

Both encrypted legs swap in one transaction, or nothing moves at all.

settle · Strategy-B

This is what the world sees.

sepolia.etherscan.io · tx · Logs
sellAmount0x7f4e2a91c8…a1b2c3d4e5f6
minBuyAmount0x7f4e2a91c8…a1b2c3d4e5f6
🔒 unreadable — even by validators
FHE.fromExternalFHE.allow (ACL)ERC-7984

An honest scope

✅ Live now

Direct OTC + RFQ

  • Encrypted intents (size + price stay ciphertext)
  • Hidden reserve amount
  • Counterparty-scoped view grants
  • Atomic Strategy-B settlement
  • Sealed-bid Vickrey auctions (up to 5 bidders)
  • Cancel an open intent anytime

🗺 Coming soon

Scaling up

  • Partial fills
  • Compliance-gated fills (allowlist / KYC)
  • More token pairs

Trade without leaving a number trail?

Samar · built on Zama fhEVM · Sepolia testnet