🎨 Visual Art · color-themed art auctions

Chromasettlev · x402

Bid on generative color palettes and hex-coded digital assets where every bid is a 0.01 USDC x402 micropayment. Instead of high-friction gas wars, users 'ink' their interest through streaming micropayments that fund the artist in real-time. Each increment settles on Hedera, providing proof-of-bid without the overhead of traditional auction houses.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the color-themed art auctions 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 primitiveBy turning the 'bid' into a recurring micropayment, we solve the friction of traditional auctions. The payment becomes the interaction primitive—proving stake and interest without committing to thousands of dollars upfront.

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
$65B
The global fine art and digital collectibles market.
SAM
$400M
On-chain generative art and NFT auction volume on Hedera/L2s.
SOM
$12M
Micro-collectors and high-frequency bidders seeking low-friction participation.

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

See also

Adjacent entries.