Creative Blockchain
🎮 Game Design & Interactive Media · challenge validation

SPRINT · Paid Certificate

Submit your frame-data payload for instant cryptographic validation. Gamers pay per verification to get on the global leaderboard; developers pay to batch-validate tournament entries. Eliminates manual modding through automated, state-stamped proof of completion. Every successful run returns a Base tx hash—your immutable receipt of glory. 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 challenge validation record into a signed certificate game designers 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.

challenge validation
Onchain Speedrun Verification
Verify and timestamp speedrun attempts on Sepolia smart contracts to prevent cheating. Ownership is sealed inside a post-quantum QUIP vault.
item distribution
LootCrack · Paid Certificate
Instead of subscription-based RNG, every item acquisition is a discrete micropayment transaction. Use QUIP to meter high-value item reveals, ensuring that rare 'Legendary' pulls generate immediate protocol revenue while providing players with a cryptographic receipt of authenticity on Base. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.
storytelling
Ghostwriter · Paid Certificate
Every Narrative Branch requires a micropayment to fork the storyline, preventing spam and placing real economic weight on character decisions. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.
economy management
LootLogic · Paid Certificate
A real-time economy balancing engine for game designers. Every state-change in the economy requires an QUIP-authenticated signature, turning game management into a metered, audit-ready service where developers pay for computational 'god-mode' actions. Paying 0.01 USDC over x402 returns a signed provenance certificate for the work.