Creative Blockchain
🎮 Game Design & Interactive Media · 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.

x402 track · paid unlockPay-per-verify· verification market
Section · Onchain

The primitive.

full primer →

Whoever needs certainty about a game fairness — 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.

game fairness
Transparent RNG Mechanics
Implement verifiable random number generation on Sepolia to ensure fair game outcomes. 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.
immersive interaction
Vectra · Pay to Verify
Immersive interaction logs as a metered asset. Each EIP-3009 signature unlocks a cryptographically signed packet of spatial data from the facilitator, enabling true pay-per-view immersive media. Anyone can pay 0.01 USDC over x402 to verify someone else's QUIP chain and walk away with a receipt.