Zend It ensures secure blockchain transactions by allowing users to verify details before signing, especially with Ledger hardware wallets. Using ZKPs and building on Polygon, Zend It offers transparent, risk-free interactions with smart contracts, putting users in full control.

Ledger
Hardware crypto wallet maker; its Ledger Wallet app lets users manage, swap and stake crypto.
- Prize money awarded
- $68,500
- Prizes
- 38
- Winning projects
- 37
- Hackathons
- 9
- Largest prize
- $5,000
- Active
- 2024–2026
What they reward
Tech their winners favour
Share of Ledger's winners using it, against all entries at the same hackathons.
Recurring prizes
Tracks offered at more than one hackathon.
- AI Agents x Ledger3 hackathons · about $5,733 · last 2026
- [L] HARDWARE INTEGRATIONS3 hackathons · about $5,000 · last 2025
- CLEAR SIGNING (ERC-7730)2 hackathons · about $4,000 · last 2025
- DOCUMENTATION IMPROVEMENT2 hackathons · about $1,000 · last 2025
Hackathons
- ETHOnline 2026 Sep 4–16, 2026$5KCore5$5K
- New York 2026 Jun 12–14, 2026$10KCore5$10K
- Cannes 2026 Apr 3–5, 2026$10KCore8$10K
- Buenos Aires Nov 21–23, 2025$10KGold5$10K
- New York 2025 Aug 15–17, 2025$10KGold3$6K
- Cannes Jul 4–6, 2025$10KGold5$10K
- Bangkok Nov 15–17, 2024$10KGold4$10K
- San Francisco Oct 18–20, 2024$10KGold1$5K
- Singapore Sep 20–22, 2024$5KRuby1$2.5K
Winners
All 37 winning projects →AI-managed private USDC yield, custodied by your Ledger — keys never leave the Secure Element
Verify agent skills before they run. Set on ENS, AI-reviewed in Chainlink CRE, Ledger-gated.
Added ledger wallet integration to hardhat 3, enabling secure hardware transaction signing
LedgerSuite - Your Ledger, Your Tools, One Suite for you Ledger Device
Tools to make clear signing easier. Auto generate ERC 7730 files with tx intents.
Transaction insights powered by VisualSign and ERC-7730 for safer transaction verification
Stream USDC to a Ledger-signed DCA agent that buys ETH/BTC, bounded to hours of flow, not TVL.
frostgun is a threshold wallet (k out of n signing) integrated in hardware
Add Ledger wallet to wagmi connector to allow integration with more developer tools
Let's make DeFi safe again, starting with adding a generic parser for the well known ERC-4626 widely used in DeFi and leveraging Ledger new EIP-7730!
UpCent turns PayPal payments into effortless crypto savings, secured by Ledger.








