JackCo is a no-loss DeFi lottery protocol on Base mainnet. Users deposit USDC, the protocol earns DeFi yield across Aave, Morpho, and other strategies, and every 7 days the accumulated yield is distributed as prizes to randomly selected winners. Your principal is always 100% safe and withdrawable.

Is my principal really safe?

Yes. Only the DeFi yield (interest) is distributed as prizes. Your principal deposit is protected by smart contracts and can be withdrawn at any time — whether you win or lose. You can never lose your deposit.

How are winners selected?

Winners are selected using Chainlink VRF (Verifiable Random Function), which provides cryptographically secure, publicly verifiable randomness on-chain. No one — including the JackCo team — can predict or influence the outcome.

When are prize draws held?

Prize draws occur every 7 days. JackCo uses TWAB (Time-Weighted Average Balance), so the longer you keep your deposit, the stronger your win probability.

JackCo charges a 12% fee on yield only — never on principal. All gas fees for deposits and withdrawals are sponsored by the protocol via Account Abstraction (ERC-4337), so users pay zero gas.

What is the CLGO token and how does it boost my chances?

CLGO is JackCo's ecosystem token. Holding CLGO on Ethereum mainnet increases your effective draw weight: 1,000 CLGO gives 1.1× boost, 10,000 gives 1.25×, 100,000 gives 1.5×, and 1,000,000+ gives 2.0× — doubling your win probability.

What chains and wallets does JackCo support?

JackCo runs exclusively on Base mainnet (Chain ID 8453). It supports all EVM wallets: MetaMask, Coinbase Wallet, and any WalletConnect-compatible app (Rainbow, Trust Wallet, etc.).

How do I claim my prize?

If you win, a claim button appears on the Prizes page. Prizes can be claimed at any time within 90 days of the draw. Unclaimed prizes roll over to the next prize pool.

No-Loss Lottery · DeFi Yield Prize Pool

預けて当てる。元本は常に安全。

DeFiの利回りが毎週当選者への宝くじ賞金になります

手数料なし。損失なし。元本100%保証。

元本100%安全

ガス代: $0

VRF

Chainlink VRF Verified

仕組み

USDCなどを預けるだけ。DeFiの知識不要。

預入

USDCなどを預けるだけ。DeFiの知識不要。

利回り獲得

預金が自動でDeFi利回りを生み出します。

賞金獲得

利回りが毎週の賞金になります。毎週68名が当選。

リアルタイム統計

リアルタイムオンチェーンデータ

総ロック額

累計当選者数

今週の賞金プール

次回抽選まで

07d 00h 00m

預けて当てる。元本は常に安全。

仕組み

預入

利回り獲得

賞金獲得

リアルタイム統計

よくある質問