🎮 Game Design & Interactive Media · asset permanence

PROP-FETCH · x402

A cross-engine protocol for game asset instantiation. Developers pay 0.01 USDC to fetch a cryptographically verified 'Prop Bundle' (3D mesh, collision data, and physics scripts) from the Base ledger into their runtime. Payment guarantees the asset’s permanent availability and provenance, preventing broken dependencies in persistent worlds. Creators receive instant micropayment royalties every time their prop is spawned in a new game instance.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the asset permanence 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 primitiveTraditional asset stores use heavy upfront licenses. By moving to a pay-per-instantiation model, indie devs reduce overhead while creators generate high-volume, passive revenue from 'viral' assets used across the metaverse.

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
$18.4B
The global game engine asset and digital twin market moving toward standardized, metered interoperability.
SAM
$850M
The addressable market for indie/AA game developers and modders migrating to on-chain asset libraries.
SOM
$12M
Initial capture of the Base gaming ecosystem and interoperable 'on-chain world' plugins.

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

See also

Adjacent entries.