🎬 Filmmaking & Animation · material asset library

Grain · x402

Surface-as-a-Service for 3D pipelines. Unlock high-fidelity, production-ready material shaders (PBR) on-demand. No subscriptions—pro animators pay 0.01 USDC to instantly pull a unique texture hash into their workspace, with provenance baked into every transaction.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

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

Why this primitiveShifts from a passive storage 'vault' to a high-velocity utility. x402 eliminates the friction of credit systems, allowing render engines or artist plugins to micro-pay for assets only when they hit 'import'.

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
$18B
Global 3D mapping and texture rendering software market.
SAM
$450M
The independent VFX and 3D animation tool market.
SOM
$12M
Direct-to-engine asset distribution for Base-native digital artists.

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

See also

Adjacent entries.