Creative Blockchain
🎥 Videography & Film · color grading

ChromaMeter · Pay to Anchor

Every 'Apply' action is a micro-transaction that settles on-chain, creating a transparent revenue stream for colorists while providing filmmakers with verifiable, production-ready aesthetic profiles. Pay per frame-match or per LUT-pull via signed EIP-3009 authorization. One 0.01 USDC payment over x402 anchors the WOTS+ seal on-chain — no subscription, no account.

x402 track · paid unlockPay-to-anchor· paid provenance
Section · Onchain

The primitive.

full primer →

Videographers pay 0.01 USDC once, in-page, and the color grading seal is written on-chain for them — no funded host-chain wallet, no subscription, just a payment log that ends in a real transaction.

Why this primitiveLoading details…

Kernel
a 0.01 USDC payment over x402 on Base Sepolia that buys one on-chain anchor — the server verifies the settlement, then a relayer writes the user's WOTS+ seal into the QUIP verifier on the host chain
Drives the UI as
a numbered payment log running from 402 challenge to settled USDC to the host-chain anchor tx, every hash a clickable explorer link
Appendix · Secrets

Required keys.

METAMASK_PRIVATE_KEY
Deploys the QUIP verifier to your host chain. Fund on Sepolia via the Google Cloud faucet.
open ↗
SEPOLIA_RPC_URL
Host-chain HTTPS RPC endpoint. Any Sepolia provider works.
open ↗
ETHERSCAN_API_KEY
Required for npx hardhat verify after deploy.
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 build prompt…
Open in Lovable ↗Sepolia Etherscan ↗
Appendix · Market

Market sizing.

TAM
…
SAM
…
SOM
…

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

See also

Adjacent entries.

color grading
ColorGrade NFT
Create and trade unique onchain color grade presets as NFTs for creative reuse. Ownership is sealed inside a post-quantum QUIP vault.
color grading
ColorGrade Provenance
Track and share editable color grading profiles via IPFS for collaborative and consistent grading. Every action is signed with a fresh WOTS+ one-time key.
color grading
ColorGrade Ledger
Track color correction versions with creator-owned tokens to maintain authentic grading history. Ownership is sealed inside a post-quantum QUIP vault.
video copyright
FrameGuard · Pay to Anchor
A micropayment-metered verification engine for filmmakers. Protect your raw files by anchoring unique visual fingerprints to Base at the moment of capture. Producers pay per timestamp to generate a legally verifiable chain of custody, effectively ending deepfake disputes and metadata stripping. AI scraping agents must. One 0.01 USDC payment over x402 anchors the WOTS+ seal on-chain — no subscription, no account.