Creative Blockchain
🎵 Music & Sound Design · 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.

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

The primitive.

full primer →

One 0.01 USDC payment turns the remote collaboration 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.

remote collaboration
Decentralized Jam Sessions
Record and timestamp decentralized jam sessions to prove creative input for all participants. The creator's existing wallet is wrapped with a post-quantum commitment.
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.
environmental audio
ATMOS · Paid Certificate
A metered API for high-fidelity environmental audio. Every soundscape is an on-chain primitive that permits instantaneous micro-licensing for game engines, VR environments, and meditation apps without subscription overhead. Pay exactly for the atmosphere you use. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.