Creative Blockchain
🎵 Music & Sound Design · stem distribution

STEMTAP · x402

Pay-per-stem extraction and sampling. Producers upload masters; creators pay 0.01 USDC to unlock individual instrument tracks (drums, bass, synth, vocals) for instant use in their DAW. Every sample is a micro-transactional license, settling on Hedera with a signature.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the stem distribution engine is metered with x402: 0.01 HBAR or 0.01 HTS USDC per call, paid from the embedded wallet, so musicians — or the agents working for them — pay per query and get a HashScan receipt every time.

Why this primitiveTraditional stem packs are expensive and bloated. x402 enables 'surgical sampling,' where a producer only pays for the specific kick drum or vocal chop they need, reducing friction for remixers and increasing high-volume revenue for sound designers.

Kernel
an x402 v2 paywall metering access at 0.01 HBAR or 0.01 HTS USDC (token 0.0.429274) per call, paid from the embedded wallet through the relay and verified by a self-hosted facilitator against the Hedera mirror node
Drives the UI as
a 'pay 0.01 HBAR or USDC to unlock' button with a live flow log and a HashScan link for every settlement
Appendix · Secrets

Required keys.

HEDERA_OPERATOR_ID
Hedera testnet account id (0.0.xxxxxx). Create and fund it free.
open ↗
HEDERA_OPERATOR_KEY
ECDSA private key for that account, from the Hedera portal dashboard.
open ↗
REOWN_PROJECT_ID
Free project id powering the HashPack pairing modal.
open ↗
HEDERA_RPC_URL
Optional. JSON-RPC relay, defaults to the public Hashio endpoint.
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. Make sure all five secrets above are set first. read the build strategy →

Loading the mega-prompt…
Hedera testnet HashScan ↗
Appendix · Market

Market sizing.

TAM
$2.8B
the total addressable market for the creator economy's music production and licensing segment.
SAM
$450M
the global market for royalty-free loops and digital audio workstations (DAWs).
SOM
$12M
targeting early-adopter phonk, hyperpop, and lofi producers experimenting with Base-native creative tools.

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

See also

Adjacent entries.

stem distribution
Onchain Audio Stems
Distribute song stems with immutable licenses and resale royalty tracking onchain.
stem distribution
Onchain Audio Stems
Distribute high-quality audio stems with transparent ownership and zero gas fees.
sample tracking
Provenance · x402
A sub-cent attribution layer for sound design. Producers pay $0.01 USDC to instantly unlock high-fidelity stems and secure a cryptographically signed provenance receipt. Every time a sample is previewed or dragged into a DAW, the facilitator settles a micropayment directly to the original creator's Magic Link email sign-in. No subscriptions, just pay-per-sample flow for the agentic music economy.
remix licensing
STEMS · x402
A 'Pay-per-Stems' protocol where remixers stream high-fidelity project files for 0.05 USDC per download. Every stem download triggers an immediate HTS transfer settlement to the original producer's wallet. Final remix uploads are gated by x402 signatures, ensuring the licensing fee is burned into the metadata before the track can be minted or played. licensing is no longer a contract; it's a micropayment primitive.