📷 Photography · color grading

Chromafuel · x402

A decentralized colorist engine where every preset application is an on-chain event. Instead of buying static LUT packs, photographers pay $0.01 USDC per frame processed. The HTS transfer signature validates the 'Look' metadata, minting a temporary provenance proof for the grade. Professional colorists set up automated fee-streams—every time an AI agent or mobile editor applies their signature style, they are settled instantly on Hedera.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

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

Why this primitiveMoving from 'buy once' to 'pay per look' aligns with high-volume mobile editing and AI-generated imagery. x402 turns the preset into a metered service rather than a piratable file.

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
$2.8B
Global digital photography and filter-based social commerce market.
SAM
$450M
The creative professional software market shifting toward pay-as-you-go cloud credits.
SOM
$12M
Transaction volume from mobile 'one-tap' editor integrations and AI image post-processing agents.

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

See also

Adjacent entries.