Creative Blockchain
🎭 Theater & Live Performance · sound design

EchoVault · Pay to Verify

An industrial-grade foley and atmosphere engine for live theater. Sound designers call high-fidelity stems from a decentralized vault via QUIP signatures. Designers earn per-cue royalties as frontline technicians trigger sounds in real-time during performance, ensuring every 'creak' or 'explosion' is a settled micro-transaction on the ledger. 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 sound design — not the creator — pays 0.01 USDC to have the WOTS+ chain replayed, and directors 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.

sound design
Soundscape Archive
Pin ambient and effect sound files with metadata on IPFS to ensure lasting availability and sharing. Every action is signed with a fresh WOTS+ one-time key.
sound design
Soundscape Provenance
Mint live performance soundscapes as NFTs to authenticate original audio environments. The creator's existing wallet is wrapped with a post-quantum commitment.
ticket authenticity
MarqueeGate · Pay to Verify
Instead of static QR codes, the 'GateCheck' requires an on-the-spot EIP-3009 signature, paying the venue directly to unlock the turnstile. This prevents secondary market fraud by making the 'handshake' between the wallet and the scanner a real-time, paid proof-of-presence. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.
performance staking
STANDING O · Pay to Verify
These small-batch tips are settled instantly to the performer's wallet during live scenes, creating a real-time heat map of audience engagement. Acts as a high-fidelity feedback loop where fans financially validate performance beats as they happen. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.