Creative Blockchain
🎨 Visual Art · art materials tracking

KROMA · x402

$0.01 — pay-per-lookup to verify the ethical sourcing and chemical provenance of high-end pigments, canvases, and binders. Collectors and restorers pay a micro-fee to pull immutable certificates from IPFS via Base, ensuring the material integrity of a physical work without a subscription entry barrier.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

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

Why this primitiveHigh-end art collectors and secondary markets demand transparency for material longevity (archival quality). x402 enables a 'pay-per-scan' model for QR-coded artwork tags, turning provenance into a micro-revenue stream for material certifiers.

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
$65B Global Art Market requiring authentication and material transparency.
SAM
$1.8B worldwide fine art restoration and valuation industry.
SOM
$25M focused on digital provenance for emerging 'Phygital' art and transparent supply chain auditing.

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

See also

Adjacent entries.

art materials tracking
Visual Art Supply Chain
Pin supplier certificates and provenance of materials to IPFS for buyer transparency.
art ownership tracking
HardTrace · x402
An on-chain verification layer where creators and galleries pay 0.01 USDC to append or verify high-fidelity provenance events. Trade paper trails for a micro-paid, immutable ledger of truth.
generative art minting
Gen-Seed · x402
A headless seed-to-string engine where 0.01 USDC triggers a unique generative iteration. Instead of a heavy upfront minting fee, users pay per 'Evolution Sign-off.' Artists deploy logic; collectors pay per high-fidelity render, receiving a Hedera transaction id as proof of unique generation. The payment is the shutter click.
gallery exhibition tracking
Exhibit · x402
Provenance is a living ledger, not a static database. Exhibit pays the artist 0.01 USDC every time a curator, insurer, or buyer pulls a verified exhibition history or updates a physical location tag. Turn the 'paper trail' into a real-time revenue stream for estates and digital creators.