Bitcoin testnet4 · Spark REGTEST · no mainnet paths
Creative Bitcoin
🎥 Videography & Film · graphic overlays

Overlay Origin II

Protect original graphic overlays by minting each as immutable NFTs with creator attribution.

Spark sats paywall· instant sats payments
Section · Onchain

The primitive.

full primer →

Videographers pay a few sats over Spark (Bitcoin L2) via a single Privy-signed transfer to unlock the graphic overlays; settlement is instant and the merchant confirms via getBalance.

Why this primitiveA Spark sats transfer settles in under a second and is Bitcoin-native — perfect for gating this content behind a one-click, low-friction micropayment.

Kernel
a 'pay N sats on Spark to unlock' gate — the user signs a Spark transfer via Privy, the merchant's wallet observes the transfer via Spark's getBalance/getTransfers, and the endpoint releases the payload
Drives the UI as
a 'pay 100 sats to unlock' button that returns the Spark tx id, the merchant confirmation, and settles instantly
Appendix · Secrets

Required keys.

PRIVY_APP_ID
Privy dashboard → your app. Configure with chainType 'spark' to mint Bitcoin L2 wallets on sign-in.
open ↗
PRIVY_APP_SECRET
Server-side. Required for the merchant Spark wallet to observe incoming sats transfers via the Privy RPC.
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 — it carries its own feature spec, code, setup and checklist. read the build strategy →

loading the build spec…
Open in Lovable ↗mempool.space testnet4 ↗
Appendix · Market

Market sizing.

TAM
$1.1B
video graphics and overlay tools
SAM
$140M
graphic designers for video
SOM
$9M
freelancers selling overlays as NFTs

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

See also

Adjacent entries.

graphic overlays
Overlay Origin
Protect original graphic overlays by minting each as immutable NFTs with creator attribution.
authenticity tracking
Clip Provenance Ledger II
Verify original footage sources with onchain provenance that users access gaslessly.
visual effects trading
Sponsored Effects Marketplace II
Buy and sell video effects licenses seamlessly with gasless wallet transactions.
NFT video frames
Gasless Frame Tokens II
Mint and trade unique video frames as NFTs without ever paying gas fees.