🎨 Visual Art · artistic process documentation

CHRONOCANVAS · x402

A cryptographic provenance engine for fine art. $0.01 USDC per 'Save State' (HTS transfer) to commit a canvas snapshot and process metadata to IPFS/Base. Collectors authenticate via the embedded wallet to pay a micro-fee and unlock the 'Process Stream'—viewing the invisible layers and creative struggle behind the finished piece. Payment at every stroke ensures the provenance is as immutable as the paint.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the artistic process documentation 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 archival process into a pay-per-commit model, the artist builds a high-fidelity audit trail of their labor. The x402 primitive transforms the 'time capsule' from a static folder into a metered evidentiary stream that collectors pay to participate in, turning process documentation into a direct revenue source.

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
$67B
The global art market, increasingly reliant on verifiable digital pedigree and decentralized storage.
SAM
$880M
Estimated annual volume of the digitally-tracked provenance and art authentication market.
SOM
$22M
Capturing 2.5% of digital-native independent artists using Base for transparent on-chain creative workflows.

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

See also

Adjacent entries.