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Season 1 · DeFi & Open Finance

OPN Builder Receipt

A native OPN builder receipt for transparent ecosystem activity records.

Stage 1, ReviewDeFi & Open Finance

by kurban_vadim · submitted Jun 7, 2026

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Weighted average across the 5 judging criteria.

Description

01/03

What the builder said.

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

Builder activity receipt

OPN Builder Receipt is a small receipt-based contract deployed on OPN Chain. It lets a wallet issue a native OPN builder receipt and stores that receipt as a transparent on-chain activity record.

The idea is to create a simple proof layer for builder-related funding, deposits, or ecosystem activity without relying only on off-chain notes.

Why it makes sense

Builder programs often involve small actions: funding, submitting, supporting, testing, contributing, or recording participation. A receipt model is useful because it creates a readable record of value and activity linked to a wallet.

This first version keeps the scope narrow: issue a receipt, store its value, track whether it was settled, and make the record readable.

Contract behavior

  • The user calls issueBuilderReceipt() and sends native OPN.
  • The contract creates a builder receipt for that wallet.
  • Each receipt stores amount, issue time, and settlement status.
  • The contract tracks receipt value by user.
  • It also tracks total receipt value and builder receipt event count.
  • settleBuilderReceipt() is included for closing a receipt later.
  • Read functions expose receipt records by wallet.

OPN Chain proof

The contract was deployed on OPN Chain during the Season 1 submission window. A live issueBuilderReceipt() transaction was executed after deployment, so the submission includes both deployment proof and real interaction proof.

Roadmap

02/03

What ships next.

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

Current submission

The first version of OPN Builder Receipt focuses on a simple builder activity receipt:

  • Deploy the builder receipt contract on OPN Chain.
  • Test the issueBuilderReceipt() function with native OPN.
  • Store receipt amount, issue time, and settlement status on-chain.
  • Track receipt value by user.
  • Track total receipt value and builder receipt event count.
  • Submit the build for Season 1 review.

Next step

The next step is to add a small receipt dashboard:

  • Add wallet connection.
  • Let users issue builder receipts from a web page.
  • Show receipt records for the connected wallet.
  • Separate open and settled receipts.
  • Add explorer links for receipt transactions.

Product expansion

After the basic interface, the builder receipt model can support more ecosystem use cases:

  • Add named builder receipt records.
  • Add receipt categories for grants, rewards, testing, submissions, or community support.
  • Add ERC-20 receipt support.
  • Add public receipt pages for transparent verification.
  • Improve event indexing for dashboards and analytics.

Long-term direction

The long-term goal is to turn OPN Builder Receipt into a lightweight builder activity record for OPN Chain, useful for ecosystem participation, contributor funding, campaign support, and transparent builder-program records.

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.

  • 01OPNBuilderReceiptPrimary

    0xb106207Cb30cbE3A677ec47506D47e80BcbeCFfd

    tx 0xfcfba01a6a65a34523d96c2d89348a8d22030040ebdaa6afdc0fd97136a5088b

    deployed Jun 7, 2026 · block 18095959