Creative Blockchain
🎵 Music & Sound Design · remix licensing

StemFlow · x402

A headless marketplace for high-fidelity stems where every 'Play' and 'Download' is a settled micro-license. Using x402, producers sign $0.01 HTS transfer authorizations to instantly unlock DAW-ready wav files and legal clearance. No subscriptions, no upfront bundles—just pay-per-stem flow that converts listeners into legal remixers via the transaction hash.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the remix licensing 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 primitiveTurning remixing into a metered utility removes the friction of high-cost sample packs. By making the payment the 'access key' to the raw audio, the facilitator ensures that the creator is paid instantly for every unique pull, while providing the remixer an on-chain receipt of usage rights.

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 creator economy's total spend on digital assets, stock media, and intellectual property licensing.
SAM
$450M
The global music production software and sample library market moving toward granular, per-asset liquidity.
SOM
$12M
Independent electronic music producers on Hedera using decentralized distribution agents for instant licensing.

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

See also

Adjacent entries.

remix licensing
Onchain Remix Rights
Enable transparent licensing and royalty splits for remixed tracks directly on the blockchain.
remix licensing
Sample Remix Rights
Mint remixable sample NFTs granting verified usage and royalty rights to remixers.
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.