Creative Blockchain
🎵 Music & Sound Design · performance verification

HEARTHASH · Pay to Anchor

A pay-per-attestation protocol for touring musicians. Fans pay a cent to verify the 'Live-ness' in real-time, and venues pay to verify setlist compliance. Payment acts as the signal that the audio wasn't just a pre-recorded playback. One 0.01 USDC payment over x402 anchors the WOTS+ seal on-chain — no subscription, no account.

x402 track · paid unlockPay-to-anchor· paid provenance
Section · Onchain

The primitive.

full primer →

Musicians pay 0.01 USDC once, in-page, and the performance verification seal is written on-chain for them — no funded host-chain wallet, no subscription, just a payment log that ends in a real transaction.

Why this primitiveLoading details…

Kernel
a 0.01 USDC payment over x402 on Base Sepolia that buys one on-chain anchor — the server verifies the settlement, then a relayer writes the user's WOTS+ seal into the QUIP verifier on the host chain
Drives the UI as
a numbered payment log running from 402 challenge to settled USDC to the host-chain anchor tx, every hash a clickable explorer link
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.

performance verification
Live Set Proof
Proof your live performances onchain with zero gas fees and social wallet ease. The creator's existing wallet is wrapped with a post-quantum commitment.
sample tracking
Provenance · Pay to Anchor
A sub-cent attribution layer for sound design. Every time a sample is previewed or dragged into a DAW, the facilitator settles a micropayment directly to the original creator's Privy wallet. No subscriptions, just pay-per-sample flow for the agentic music economy. One 0.01 USDC payment over x402 anchors the WOTS+ seal on-chain — no subscription, no account.
live performance
PulseGate · Pay to Anchor
Pay-per-stream triggers instant micro-settlements for high-stakes live performance. Each payment is a signed EIP-3009 message that instantly splits across the DJ, the producer, and the venue's wallet. One 0.01 USDC payment over x402 anchors the WOTS+ seal on-chain — no subscription, no account.
synth programming
PATCHLOCK · Pay to Anchor
Stop buying bulk packs to find one sound. DAW-integrated QUIP plugins allow synth designers to monetize individual presets via EIP-3009. No subscription, no bloated libraries—just a per-click logic that settles on Base, turning every 'Load Preset' action into a micro-royalty for the designer. One 0.01 USDC payment over x402 anchors the WOTS+ seal on-chain — no subscription, no account.