Bitcoin testnet4 · Spark REGTEST · no mainnet paths
Creative Bitcoin
🎮 Game Design & Interactive Media · social gifting

Gasless Avatar Gifting

Send avatar skins and items as gifts without any gas fees.

Ordinals inscription (testnet4)· onchain authorship
Section · Onchain

The primitive.

full primer →

Game designers inscribe each social gifting 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
$3.5B
virtual gifting market
SAM
$700M
indie avatar economies
SOM
$140M
gasless social gifting platforms

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

See also

Adjacent entries.

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.
community storytelling
Lore Collaboration Board
Enable community-driven lore contributions to be pinned permanently, ensuring collective narrative ownership.