🎵 Music & Sound Design · music education

Sonic Ledger · x402

A pay-per-module music theory engine where every lesson, ear-training exercise, and sound design challenge requires a 0.01 USDC unlock. Students don't pay for a subscription they might not use; they pay for the exact knowledge they consume. Every successful completion triggers an immediate onchain credential, turning your learning history into a verifiable, micro-funded repertoire.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the music education 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 primitiveBy shifting from a bulk 'Curriculum' to an x402 'Pay-per-Lesson' model, we eliminate the friction of high-cost courses. The micropayment acts as a 'skin-in-the-game' proof of intent for each exercise, while facilitating instant creator royalties for the musicians who designed the modules.

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…
Appendix · Market

Market sizing.

TAM
$11.8B
The global online education and certification market.
SAM
$450M
The digital music education and DIY instrument learning market.
SOM
$12M
Web3-native students and sound designers using micro-credentials for portfolio building.

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

See also

Adjacent entries.