Prove a carbon credit was retired once and only once
Intermediate16h2–3
SolidityOpenZeppelinNext.js
17/20Music Royalty Splits
Split song income automatically among collaborators.
Intermediate16h2–3 people17/20 fit
Build Music Royalty Splits for independent musicians in ~16h with 2–3 people. Stack: Solidity + OpenZeppelin + Next.js.
Why it wins: Clear creator economy use case.
Build flow
01 · Problem
Royalty splits are managed in spreadsheets and paid late.
02 · Solution
A split contract receives income and lets collaborators withdraw their share, with a public split sheet.
03 · Build
- 1Write split contract
- 2Build split sheet UI
- 3Simulate income
- 4Withdraw
04 · Demo
Send income and show each collaborator's balance.
MVP checklist
- Split sheets
- Automatic shares
- Withdrawals
- History
Tech stack
| Tech | Role | |
|---|---|---|
| Solidity | Smart contracts | Chain |
| OpenZeppelin | Audited contract library | Chain |
| Next.js | Frontend + API routes | Web |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
Related ideas
More Web3Pay a global team in stablecoins on a schedule with payslips
Intermediate18h2–3ViemSafeNext.js17/20Issues tickets that can’t be faked and resell only at fair prices
Intermediate36h2–3SolidityOpenZeppelinviem15/20