Bitcoin testnet4 · Spark REGTEST · no mainnet paths
Creative Bitcoin
🎮 Game Design & Interactive Media · user-generated content

Privy Story Worlds

Create and share story-driven worlds with gasless wallet logins and sponsored content publishing.

Ordinals inscription (testnet4)· onchain authorship
Section · Onchain

The primitive.

full primer →

Game designers inscribe each user-generated content as an Ordinal on Bitcoin testnet4, minting a permanent, wallet-owned inscription ID with the artifact bytes carried directly in the witness.

Why this primitiveWriting the artefact bytes directly into a Bitcoin testnet4 taproot witness mints an ownable inscription that travels with the creator's address.

Kernel
a taproot inscription that writes the artifact bytes directly into a Bitcoin testnet4 witness, minting an inscription ID owned by the creator's address
Drives the UI as
an 'inscribed on Bitcoin' badge with the inscription ID and an ordinals.com testnet preview
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
$4B
UGC game market
SAM
$850M
indie narrative platforms
SOM
$170M
gasless content publishing

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

See also

Adjacent entries.

user-generated content
Player-Created Onchain Items
Allow players to mint and trade custom items on Rootstock testnet smart contracts within games.
symbol and icon design
Glyph Pattern Codex
Archive unique glyphs and icon sets on IPFS for universal use in games and media.
game modification metadata
Mod Manifest Vault
Pin and share mod manifests permanently to enable decentralized mod discovery and trust.
interface state storage
Dynamic UI Blueprint
Save and distribute dynamic game UI states and settings with permanent accessibility.