Stroke/Sum · x402
A collaborative digital canvas where every brushstroke is a microscopic financial event. Instead of a free-for-all, artists pay $0.01 USDC per stroke to contribute, turning the final piece into a map of economic and creative density. All proceeds accrue to a pool shared by contributors or a featured charity, settled instantly via the embedded wallet-signed HTS transfer auth. Payment isn't just a fee; it's the sybil-resistance and the medium itself.
The primitive.
Access to the collaborative painting 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 pricing the 'stroke' at one cent, we eliminate spam, increase the intentionality of each mark, and create a high-velocity transaction environment that benefits from x402’s gasless facilitator model.
Required keys.
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The build prompt.
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Market sizing.
Indicative figures for hackathon pitches — refine with your own research before raising.