🎮 Game Design & Interactive Media · game fairness

TrueSeed · x402

High-stakes game logic often suffers from 'house bias' skepticism. This service provides a verifiable, cryptographic entropy source via Hedera testnet. Players pay 0.01 USDC to trigger a 'Trustless Roll' signed by their Magic Link email sign-in. 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.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the game fairness engine is metered with x402: 0.01 HBAR or 0.01 HTS USDC per call, paid from the embedded wallet, so game designers — or the agents working for them — pay per query and get a HashScan receipt every time.

Why this primitiveBy moving RNG from a hidden server function to a paid, user-initiated transaction, transparency becomes the product. The micropayment provides the economic audit trail for every 'luck' event in the game.

Kernel
an x402 v2 paywall metering access at 0.01 HBAR or 0.01 HTS USDC (token 0.0.429274) per call, paid from the embedded wallet through the relay and verified by a self-hosted facilitator against the Hedera mirror node
Drives the UI as
a 'pay 0.01 HBAR or USDC to unlock' button with a live flow log and a HashScan link for every settlement
Appendix · Secrets

Required keys.

HEDERA_OPERATOR_ID
Hedera testnet account id (0.0.xxxxxx). Create and fund it free.
open ↗
HEDERA_OPERATOR_KEY
ECDSA private key for that account, from the Hedera portal dashboard.
open ↗
REOWN_PROJECT_ID
Free project id powering the HashPack pairing modal.
open ↗
HEDERA_RPC_URL
Optional. JSON-RPC relay, defaults to the public Hashio endpoint.
open ↗
PINATA_JWT
Pins images / JSON / manifests to IPFS.
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 mega-prompt…
Appendix · Market

Market sizing.

TAM
$8.2B
The global online gambling and RNG-dependent gaming software market transitioning to verifiable primitives.
SAM
$450M
The segment of the Web3 and mobile gaming market prioritizing provable fairness and on-chain transparency.
SOM
$12M
Independent Unity and Godot developers on Hedera seeking a plug-and-play HTS transfer RNG oracle.

Indicative figures for hackathon pitches — refine with your own research before raising.

See also

Adjacent entries.