Bitcoin testnet4 · Spark REGTEST · no mainnet paths
Creative Bitcoin
📷 Photography · collaborative editing

CollaboChain Studio II

Share locked versions of photos and edits on IPFS for trustable collaborative workflows.

Privy Spark sign-in· bitcoin wallet UX
Section · Onchain

The primitive.

full primer →

Photographers sign in with Google through Privy — no seed phrase, no wallet extension — and Privy mints them a Spark (Bitcoin L2) wallet plus a Bitcoin testnet deposit address in one flow.

Why this primitiveA Privy Spark embedded wallet lets creators sign in with Google and receive a Bitcoin L2 address in one click — no seed phrase, no browser extension.

Kernel
Privy embedded wallet with chainType 'spark' — Google / email sign-in mints a Bitcoin testnet address plus a Spark (Bitcoin L2) address in one flow, no seed phrase, no extension
Drives the UI as
a one-click 'Sign in with Google' that drops the user into the app with a copy-able Spark address and a testnet BTC deposit address
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
$2.4B
global photo software market
SAM
$300M
collaborative photo editing tools
SOM
$40M
decentralized collaborative editors

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

See also

Adjacent entries.

collaborative editing
Collaborative Edits Chain
Track photo edit histories and collaborators immutably on Rootstock testnet for transparent teamwork.
collaborative editing
CollaboChain Studio
Share locked versions of photos and edits on IPFS for trustable collaborative workflows.
copyright registry
Immutable Photo Rights II
Securely register photo ownership and licensing rights on-chain with immutable proof.
image authenticity
Onchain Photo Proof II
Embed verifiable metadata on Rootstock testnet to prove photo authenticity and timestamp creation.