ArcSilence
Arcsilence – Private Execution, Public Settlement.
Created on 4th December 2025
•
ArcSilence
Arcsilence – Private Execution, Public Settlement.
The problem ArcSilence solves
The problem Arcsilence solves
On Solana today, every meaningful trade is a public signal:
- Large swaps, treasury rebalances, and hedging moves are fully visible on-chain.
- MEV bots can front-run, back-run, or sandwich those trades.
- Competitors can infer strategies (what you rotate into, when, and in what size).
For DAOs, funds, and POL managers this leads to:
- Worse execution (higher slippage, worse prices).
- Long-term alpha leakage (strategies become predictable).
- Friction for more “institutional” DeFi use cases that expect dark-pool style execution.
Arcsilence removes that “transparency tax” without sacrificing on-chain settlement.
What people can use Arcsilence for
Arcsilence is a private dark pool and rebalancer for Solana, powered by Arcium’s encrypted compute. It can be used to:
-
Rebalance DAO treasuries privately
- Rotate between stables, LSTs, LRTs, and governance tokens.
- Avoid pre-signalling “the DAO is exiting X and entering Y” before trades complete.
-
Run fund / market-maker strategies without leaking alpha
- Execute systematic hedging, arbitrage, or rotation strategies.
- Hide order sizes, routing preferences, timing, and thresholds from bots and competitors.
-
Adjust protocol-owned liquidity (POL) quietly
- Move liquidity across pools/venues to optimize yield and depth.
- Prevent markets from trading ahead of POL changes.
-
Batch larger trades without becoming MEV bait
- Use Arcsilence as a private execution backend on top of existing DEXs/aggregators.
- Keep trades verifiable on Solana, but intent invisible while execution is in flight.
How it makes existing tasks easier and safer
Arcsilence changes DeFi execution in three key ways:
-
Safer from MEV and manipulation
- Orders are fetched from Solana, encrypted, and matched via Arcium MPC.
- There is no clean, public pre-trade signal for MEV bots to target.
-
Better protection of strategy and IP
- Matching, sizing, and routing logic run inside encrypted compute.
- Observers see only final settlements on-chain, not the internal decision process.
-
DeFi-native and composable
- Settlement still uses Solana programs, SPL token vaults, and DEX integrations.
- Protocols can plug Arcsilence in as a private execution layer, not a separate silo.
In short: Arcsilence lets serious Solana users keep public settlement and composability, while hiding the sensitive part – their intent and strategy – during execution.
Challenges we ran into
Everything went well
arcium devtools took some time to install and start work on it
Tracks Applied (16)
General Bounty
Network School
Privacy Infrastructure & Developer Tools
Mina Protocol
Private DeFi & Trading
Arcium
Private DeFi & Trading
Aztec
Privacy Infrastructure & Developer Tools
Electric Coin Company
Private Payments & Transactions
Osmosis
Private DeFi & Trading
Fhenix
Creative Privacy Applications
Fhenix
Private DeFi & Trading
Zcash Community Grants
Privacy Infrastructure & Developer Tools
Zcash Community Grants
Self-Custody & Wallet Innovation
Unstoppable Wallet
Private DeFi & Trading
Unstoppable Wallet
Privacy Infrastructure & Developer Tools
Raybot
Private DeFi & Trading
Noah by Plena Finance
General Bounty
Project Tachyon
Private Payments & Transactions
Star Fun
Technologies used
