Creative Blockchain
🎵 Music & Sound Design · collaborative remixing

StemStream · Pay to Verify

A headless MPC mixer where every stem interaction is a micro-settlement. No gas, just raw sound currency. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.

x402 track · paid unlockPay-per-verify· verification market
Section · Onchain

The primitive.

full primer →

Whoever needs certainty about a collaborative remixing — not the creator — pays 0.01 USDC to have the WOTS+ chain replayed, and musicians get a signed verdict receipt they can keep.

Why this primitiveLoading details…

Kernel
a paid verification service where a third party — buyer, festival, insurer — pays 0.01 USDC over x402 to have someone else's WOTS+ chain replayed and gets a signed verdict receipt back
Drives the UI as
a verdict panel with pass/fail per nonce, the local browser verification beside the paid one, and a keepable receipt
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.

collaborative remixing
Gasless Remix Exchange
Collaborate seamlessly on remixes without blockchain fees or sign-up friction. Every action is signed with a fresh WOTS+ one-time key.
sample exchange
Resonance · Pay to Verify
A high-fidelity sonic library where creators earn instantly on every preview and download. No subscriptions, just a micro-settlement for every drum hit, synth stab, or vocal chop streamed via Base. All usage rights are baked into the transaction metadata, with EIP-3009 ensuring zero-friction acquisition for bedroom producers and AI-music agents alike. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.
music funding
Sonic Mint · Pay to Verify
Every play or download triggers an immediate QUIP settlement, streaming liquid funding directly to the artist's wallet to hit milestones in real-time. No subscriptions; fans fund the production at the granular level of individual playback and asset access. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.
music marketplaces
SONIC FLOW · Pay to Verify
Pay to listen, pay to drag-and-drop. Samples are metered at the DAW level via EIP-3009. No subscriptions, just raw utility for producers and autonomous AI composers who need high-fidelity stems for real-time generative scoring. Settlement triggers a Base tx hash, instantly routing royalties to the creator's wallet. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.