Gasless Sample Swap II
Swap samples peer-to-peer with instant, free onchain transactions and simple social login.
Spark sats paywall· instant sats payments
Section · Onchain
full primer →The primitive.
Musicians pay a few sats over Spark (Bitcoin L2) via a single Privy-signed transfer to unlock the sample exchange; 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
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 ↗Add these in your Lovable project under Settings → Secrets before pasting the prompt below.
Appendix · Mega-prompt
The build prompt.
self-contained
Paste into a fresh Lovable project — it carries its own feature spec, code, setup and checklist. read the build strategy →
loading the build spec…
Market sizing.
TAM
$800M
sample exchange market
SAM
$210M
P2P music swaps
SOM
$13M
gasless sample exchanges
Indicative figures for hackathon pitches — refine with your own research before raising.
Adjacent entries.
sample exchange
Onchain Sample Swap
Facilitate peer-to-peer swapping of music samples with provable ownership and usage rights.
sample exchangeGasless Sample Swap
Swap samples peer-to-peer with instant, free onchain transactions and simple social login.
sample exchangeOnchain Sample Swap II
Facilitate peer-to-peer swapping of music samples with provable ownership and usage rights.
beat sellingNFT Beat Marketplace II
Buy and sell beats with onchain provenance and zero gas fee transactions.