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Arion

Arion

Earn yield on Zcash without compromising anonymity

Created on 4th December 2025

Arion

Arion

Earn yield on Zcash without compromising anonymity

The problem Arion solves

Arion - Privacy-Preserving DeFi Yield Protocol: Earn yield on your Zcash without compromising anonymity

Arion enables Zcash holders to earn DeFi yields (Aave) on Base L2 network while maintaining privacy through shielded transactions. Users deposit from shielded addresses, the system handles cross-chain swaps via NEAR Intents, and withdrawals return to shielded addresses — keeping on-chain activity unlinkable.

Problem
DeFi requires exposing wallet addresses and transaction history on public blockchains. Privacy coins like Zcash offer shielded transactions, but can’t directly access DeFi yield opportunities on other chains.

Solution
Arion bridges Zcash’s privacy layer with Base’s DeFi ecosystem:

  1. Shielded Deposits: Users send ZEC from shielded wallets to transparent addresses
  2. Cross-Chain Swap: NEAR Intents automatically swaps ZEC → BASE ETH
  3. Yield Generation: ETH deposited to Aave on Base network
  4. Private Withdrawals: Reverse swap ETH → ZEC to user’s transparent address
  5. Shield Again: Users shield ZEC back to their shielded address

Result: On-chain observers cannot link users’ shielded addresses to their DeFi activity.

The App is currently on Zcash and Base Mainnet (Check links for access to live contract)

Challenges I ran into

Running Zcashd locally and waiting for blocks and headers to sync was very time-demanding.

Deserializing date and time for MongoDB was a phase of trial and error.

Tracks Applied (12)

Cross-Chain Privacy Solutions

Using Near Intent APIs (1click.chaindefuser.com), transactions can be made cross-chain and which enables users on our pl...Read More
Axelar Network

Axelar Network

Cross-Chain Privacy Solutions

Using Near Intent APIs (1click.chaindefuser.com), transactions can be made cross-chain and which enables users on our pl...Read More
Osmosis

Osmosis

Private Payments & Transactions

Using Near Intent API, users can withdraw their positions on Aave, which will be automatically bridged to ZEC on Zcash a...Read More
Osmosis

Osmosis

Private DeFi & Trading

Using Near Intent APIs (1click.chaindefuser.com), transactions can be made cross-chain and which enables users on our pl...Read More

Zcash Community Grants

Privacy Infrastructure & Developer Tools

Developers can integrate our APIs into their applications for their users to access DeFi from Zcash to other networks, s...Read More

Zcash Community Grants

Private DeFi & Trading

Using Near Intent APIs (1click.chaindefuser.com), transactions can be made cross-chain and which enables users on our pl...Read More

Unstoppable Wallet

Cross-Chain Privacy Solution

Using Near Intent APIs (1click.chaindefuser.com), transactions can be made cross-chain and which enables users on our pl...Read More

Bitlux

Privacy Infrastructure & Developer Tools

Developers can integrate our APIs into their applications for their users to access DeFi from Zcash to other networks, s...Read More

Raybot

Cross-Chain Privacy Solutions

Using Near Intent API (1click.chaindefuser.com), transactions can be made cross-chain and which enables users on our pla...Read More
NEAR Protocol

NEAR Protocol

Private Payments & Transactions

Using Near Intent API, users can withdraw their positions on Aave, which will be automatically bridged to ZEC on Zcash a...Read More
NEAR Protocol

NEAR Protocol

General Bounty

Using Near Intent APIs (1click.chaindefuser.com), transactions can be made cross-chain and which enables users on our pl...Read More

Project Tachyon

Private Payments & Transactions

Using Near Intent API, users can withdraw their positions on Aave, which will be automatically bridged to ZEC on Zcash a...Read More

Star Fun

Technologies used

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