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Season 1 · DeFi & Open Finance

OPN Savings Vault

A simple OPN savings vault for native asset deposits on OPN Chain.

Stage 1, ReviewDeFi & Open Finance

by alinka_snet · submitted Jun 2, 2026

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Description

01/03

What the builder said.

Written by the team, rendered as the markdown they typed in the submission wizard.

What we built

OPN Savings Vault is a simple DeFi vault deployed on OPN Chain. It lets a user deposit native OPN into a personal savings record, while the contract stores the deposit amount, creation time, and withdrawal status on-chain.

The goal is to create a small financial primitive that can later grow into a savings dashboard, deposit tracker, basic vault interface, or personal treasury tool.

Why

A lot of DeFi products begin with simple deposit and accounting logic. This build focuses on that foundation: transparent deposits, clear user records, and readable on-chain activity.

The contract is intentionally lightweight so reviewers can easily inspect the logic and confirm how funds are recorded.

How it works

  • The user calls deposit() and sends native OPN.
  • The contract creates a savings entry for that wallet.
  • Each entry stores amount, timestamp, and withdrawal status.
  • The user can read their savings count and individual saving records.
  • The contract also includes a withdraw function for closing a saved position.

OPN Chain usage

The contract was deployed directly on OPN Chain during the Season 1 window. A live deposit() transaction was executed to prove interaction with the deployed contract.

Roadmap

02/03

What ships next.

The builder's own next-quarter plan. Use it to gauge follow-through and ambition.

Phase 1 - Current build

  • Deploy the OPN Savings Vault contract on OPN Chain.
  • Test a native OPN deposit through the deposit() function.
  • Confirm that the contract records amount, timestamp, and withdrawal status.
  • Submit the build for Season 1 review.

Phase 2 - Basic interface

  • Build a simple page where users can connect a wallet and create deposits.
  • Show each user's savings entries in a small dashboard.
  • Add clear status labels for active and withdrawn savings.
  • Add explorer links for deposit transactions.

Phase 3 - Vault improvements

  • Add optional lock periods for savings entries.
  • Add ERC-20 token deposit support.
  • Add named savings goals for users.
  • Improve event indexing for easier tracking.

Beyond

  • Explore recurring savings flows.
  • Add public savings pages for transparent community vaults.
  • Connect the vault with other OPN Chain DeFi tools.

On-chain proof

03/03

1 contract on OPN Chain.

The chain itself confirmed every deployment is valid, signed by the builder's wallet, and inside the season's window.

  • 01OPNSavingsVaultPrimary

    0x06aD5C814e0D42B3B35c4d4D3485C4e0135Ba6b6

    tx 0xc750f9d4197417bf4078a0e37c6716a94a81eb2a2af45900504e484816b7923d

    deployed Jun 2, 2026 · block 17756458