Creative Blockchain
🎵 Music & Sound Design · agreement automation

SplitTap · Paid Certificate

A frictionless 'pay-to-play' handshake for musicians. The payment is the signature—the moment the micro-cent clears, the legal agreement is hashed to Base. No gas tokens, no legalese, just a sub-cent trigger that automates royalty routing. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.

x402 track · paid unlockPaid provenance certificate· signed receipt
Section · Onchain

The primitive.

full primer →

One 0.01 USDC payment turns the agreement automation record into a signed certificate musicians can email, attach or archive — and the page proves who signed it without asking anyone to trust the server.

Why this primitiveLoading details…

Kernel
a 0.01 USDC payment over x402 that returns a relayer-signed provenance certificate over the WOTS+ head — a portable document anyone can verify without trusting the issuer
Drives the UI as
a certificate card with the signed fields, the issuing signer, and a 'recover signer' check that runs in the browser
Appendix · Secrets

Required keys.

METAMASK_PRIVATE_KEY
Deploys the QUIP verifier to your host chain. Fund on Sepolia via the Google Cloud faucet.
open ↗
SEPOLIA_RPC_URL
Host-chain HTTPS RPC endpoint. Any Sepolia provider works.
open ↗
ETHERSCAN_API_KEY
Required for npx hardhat verify after deploy.
open ↗

Add these in your Lovable project under Settings → Secrets before pasting the prompt below.

Appendix · Mega-prompt

The build prompt.

Paste into a fresh Lovable project. Make sure all five secrets above are set first. read the build strategy →

Loading the build prompt…
Open in Lovable ↗Sepolia Etherscan ↗
Appendix · Market

Market sizing.

TAM
…
SAM
…
SOM
…

Indicative figures for hackathon pitches — refine with your own research before raising.

See also

Adjacent entries.

agreement automation
Instant Collab Contracts
Create and sign collaboration agreements onchain instantly without gas fees or complex wallet setup. Every action is signed with a fresh WOTS+ one-time key.
remix licensing
STEMS · Paid Certificate
Every stem download triggers an immediate EIP-3009 settlement to the original producer's wallet. Final remix uploads are gated by QUIP signatures, ensuring the licensing fee is burned into the metadata before the track can be minted or played. licensing is no longer a contract; it's a micropayment primitive. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.
AI-generated music
StemGate · Paid Certificate
A sub-penny metadata wrapper for every AI-generated stem. High-frequency micro-licensing for producers who need high-volume, legal-clearance-on-demand. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.
remote collaboration
StemSync · Paid Certificate
No more royalty disputes; the protocol acts as a real-time ledger for creative provenance. Musicians pay to join the stem, and creators earn as their sounds are sampled or layered. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.