🎨 Visual Art · pixel art authentication

DOTCHECK · x402

A pay-per-verification registry for high-fidelity pixel art. Instead of gas-heavy minting, creators pay 0.01 USDC to timestamp a hash of their canvas, and collectors pay 0.01 USDC to instantly query the provenance API and verify authenticity. Payment acts as the cryptographic handshake between artist and ledger.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the pixel art authentication 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 shifting from 'NFT Minting' to 'Pixel-Level Verification Calls,' we remove the friction of high gas fees and replace it with extreme-granularity micropayments. Every check of the art's history is a micro-transaction, turning provenance into a metered service for digital galleries and marketplaces.

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
$3.8B
The global digital art and collectibles market transitioning to verifiable on-chain assets.
SAM
$450M
The digital art authentication and licensing niche.
SOM
$12M
Independent pixel artists and 'indie game' asset marketplaces requiring instant, low-cost verification.

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

See also

Adjacent entries.