Creative Blockchain
🎨 Visual Art · brush preset exchange

SketchSet Swap

Illustrators trade and license brush presets with zero gas fees and easy Google sign-in wallets.

Magic Link email wallet· wallet UX
Section · Onchain

The primitive.

full primer →

Painters sign in with an email one-time code and get an embedded Hedera wallet — no seed phrase, no extension, no gas estimator — and their brush preset exchange actions settle in about three seconds for a fixed sub-cent fee.

Why this primitiveMagic Link email sign-in plus Hedera's fixed sub-cent fees eliminate friction in preset licensing.

Kernel
a Magic Link embedded wallet created from an email OTP, signing over the Hedera JSON-RPC relay (chainId 296) at fixed sub-cent fees — no seed phrase, no extension, no gas estimator
Drives the UI as
a one-tap 'Sign in with email' that drops the user in with their 0.0.x account id and EVM address already on screen, plus HBAR/USDC balances and faucet links
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
$400M
digital brush market
SAM
$100M
brush preset trading
SOM
$8M
gasless brush exchange users

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

See also

Adjacent entries.

collaborative painting
Canvas Collaborate
Enable painters to co-create artworks with seamless onchain identity and gasless contributions.
illustrator community
Illustrator Guild
Create a hosted network for illustrators to share, sell, and verify work with easy login and zero gas fees.
generative art
Generative Canvas
Let generative artists deploy and monetize code-driven art with instant gasless onboarding and transactions.
art provenance tracking
Gallery Ledger
Provide gallerists with gasless, onchain tools to prove artwork provenance and authenticity effortlessly.