Creative Blockchain
📷 Photography · color grading

Chromesthesia · x402

$0.01 — pay-per-lookup. A granular, high-fidelity color grading library for cinema and film. Instead of buying $100 preset packs, editors pay a micro-transaction to unlock the HEX-curve mapping of a specific frame. Every time a palette is imported into Resolve or Lightroom, the original colorist receives a direct USDC settlement. Professional-grade color science, metered by the pixel.

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 primitiveTransforming static asset libraries into a liquid, pay-per-use utility. x402 eliminates the friction of 'subscription fatigue' for niche assets, allowing creators to monetize individual grades that would otherwise be buried in a portfolio.

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…
Hedera testnet HashScan ↗
Appendix · Market

Market sizing.

TAM
$2.8B
The global photography software and post-production plugin market moving toward granular, cloud-based asset delivery.
SAM
$450M
The digital asset market for professional photographers and video editors seeking specialized color science.
SOM
$12M
The immediate niche of crypto-native videographers and AI-image generators requiring precise chromatic metadata.

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

See also

Adjacent entries.

color grading
ColorChain Palette
Save and share color grading presets and images as permanent IPFS assets for consistent workflow.
color grading
ChainColor Study
Save and share color grading presets onchain without spending gas or complex wallet setup.
color grading
ColorGrade Chain
Track and prove original photo color grades and presets on-chain.
copyright registry
Snapshot Proof · x402
A high-frequency copyright layer for the screenshot era. 0.01 USDC per EIP-712 signature to timestamp image hashes on Hedera. Creators meter every license issuance, and platforms pay to verify provenance in real-time. No subscriptions, just provable ownership on-demand.