Bitcoin testnet4 · Spark REGTEST · no mainnet paths
Creative Bitcoin
✍️ Writing, Poetry & Narrative · poetry marketplace

VerseAuction II

Sell original poems as verified digital assets with ownership recorded on Rootstock testnet.

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

The primitive.

full primer →

Writers 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
$1.5B
writing and publishing tools
SAM
$250M
digital art and writing marketplaces
SOM
$18M
blockchain-based poem sales platforms

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

See also

Adjacent entries.

poetry marketplace
VerseAuction
Sell original poems as verified digital assets with ownership recorded on Rootstock testnet.
poetry archiving
VerseLedger II
Securely timestamp and prove original poem authorship on the blockchain to prevent plagiarism.
interactive storytelling
NarrativeVote II
Enable readers to vote on story plot directions through blockchain-based decision contracts.
screenwriting rights
ScriptRoyalty II
Automate royalty distribution for collaborative screenplays using verified smart contract agreements.