Creative Blockchain
🎨 Visual Art · digital sketch archiving

InkTrace · x402

Chronicle the evolution of your creative process. Pay 0.01 USDC to hash, timestamp, and permanently archive a high-res snapshot of your digital canvas to Base. No subscriptions, just a micro-fee per save to build an immutable, tamper-proof record of every stroke.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the digital sketch archiving 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 a free archive to a pay-per-snapshot model, the app treats 'creative progress' as a series of billable milestones. Using x402, artists can meter their archival habits, paying only when a sketch reaches a point worth preserving, turning a personal journal into a professional-grade audit trail.

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
$2.1B
The global digital art and collectibles market, increasingly moving toward onchain provenance.
SAM
$240M
Addressable segment of digital concept artists and technical illustrators requiring secure version control.
SOM
$12M
Initial capture of the professional concept art and 'process-video' creator community on Hedera.

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

See also

Adjacent entries.

digital sketch archiving
Sketch Snapshot Chain
Instantly archive and timestamp digital sketches onchain for secure creative journaling.
digital sketch archiving
Permanent Sketchbook Hub
Pin your sketchbook pages as immutable IPFS entries to build a lifelong visual diary.
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.