Creative Blockchain
🎨 Visual Art · painting provenance tracking

Brushmark · Pay to Verify

Every stroke's lineage, verified. No subscriptions—just pay-per-pin to mint a bulletproof chain of custody that travels with the physical piece. At time of sale, buyers pay a micro-fee to verify the ledger, ensuring zero-knowledge authenticity. 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 painting provenance tracking — not the creator — pays 0.01 USDC to have the WOTS+ chain replayed, and painters 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.

painting provenance tracking
Digital Canvas Ledger
Record and pin painted artwork metadata to IPFS for permanent, tamper-proof provenance. The creator's existing wallet is wrapped with a post-quantum commitment.
art auction transparency
Hammer · Pay to Verify
This eliminates bid shading and ghost bidding by making every price discovery action a micro-settled transaction on Base. Pay per bid, pay per provenance check, and pay to reveal the final hammer price. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.
limited print tracking
Provenance · Pay to Verify
A high-fidelity registry for digital and physical rarities where every provenance check and edition claim is a micro-settlement. It turns every 'check' into a direct micro-royalty for the creator. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.
artist signature authentication
TrueInk · Pay to Verify
Each verification triggers an on-chain attestation, creating a high-fidelity audit trail for collectors and galleries without monthly subscription bloat. Artists monetize their legacy per-view; collectors secure their assets per-click. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.