Creative Blockchain
📷 Photography · equipment reviews

GlassCheck · Paid Certificate

Access high-fidelity, crowdsourced lens performance data and raw RAW-file sample banks with QUIP-metered unlocks. Reviewers earn direct micropayments for every unique 'view' of their lens tests, creating a self-sustaining onchain laboratory for optics. 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 equipment reviews record into a signed certificate photographers 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.

equipment reviews
Onchain Lens Reviews
Submit and share authentic lens reviews onchain with no gas required from users. The creator's existing wallet is wrapped with a post-quantum commitment.
image authenticity
TrueLens · Paid Certificate
A pay-per-seal protocol for photographers. Instead of a subscription, users pay only for 'Truth-as-a-Service,' generating a cryptographically verifiable 'Proof of Origin' receipt. Protect your IP and verify reality in an era of Deepfakes, one cent at a time. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.
photo prints trading
ProofSheet · Paid Certificate
Eliminate listing fees and gas friction by making digital ownership a metered utility. Collectors pay-per-view to unlock raw file access, and pay-per-hop to route shipping data to print houses, with every state change settled via a signed EIP-3009 micropayment. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.
provenance tracking
LensSeal · Paid Certificate
A sub-cent ledger for digital authenticity. Creators monetize the 'truth' by charging viewers to verify the original metadata and historical edits of high-value media. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.