Creative Blockchain
🎮 Game Design & Interactive Media · marketplace integration

QuickSwap · Pay to Verify

Eliminate high-fee gatekeeping by metering the 'intent to trade' rather than taxing the volume. Users sign EIP-3009 permits for instant liquidity access, paying only for the compute and routing used in the instant swap. 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 marketplace integration — not the creator — pays 0.01 USDC to have the WOTS+ chain replayed, and game designers 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.

marketplace integration
Instant NFT Trades
Buy and sell game NFTs instantly with embedded wallets and zero gas fees. The creator's existing wallet is wrapped with a post-quantum commitment.
competitive scoring
GLHF · Pay to Verify
A hyper-competitive, global gaming leaderboard where every entry requires a micro-signed transaction. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.
match coordination
LOBBY · Pay to Verify
A high-throughput matchmaking engine where every 'Queue' request is a micro-transaction. Players pay per match-seek, ensuring skin-in-the-game and eliminating 'ghost' matchmaking. The facilitator settles pairs instantly, returning an EIP-3009 signed transaction that acts as the cryptographic handshake for game server entry. No subscription to play; pay only for the matches you actually find. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.
game fairness
TrueSeed · Pay to Verify
High-stakes game logic often suffers from 'house bias' skepticism. This service provides a verifiable, cryptographic entropy source via Ethereum Sepolia. The payment acts as the commitment hash, ensuring the developer cannot manipulate the outcome after seeing the seed. Perfect for loot boxes, critical hits, or procedural map generation where fairness is a billable feature, not a promise. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.