🎵 Music & Sound Design · lyric version control

InkTrace · x402

Micropayment-gated version control for lyricists. Pay $0.01 per 'Commit' to cryptographically timestamp a draft. Fans or collaborators pay $0.05 to unlock the 'Process Log', viewing the evolution of a hit song line-by-line. Protects IP via EIP-712 signatures while turning the creative process into a paid ledger.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the lyric version control 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 NFTs are too heavy for granular draft tracking. x402 allows for high-frequency, low-cost 'save points' that establish a verifiable chain of custody for lyrics. It turns the 'deleted scenes' of songwriting into a new revenue stream for artists.

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
$1.4B
The global music publishing and IP protection market migrating to automated, on-chain registries.
SAM
$22M
1.5M independent songwriters and topliners using digital workstations and note-taking apps.
SOM
$850K
Early adopters in the web3 music scene and ghostwriters requiring immutable proof of work for royalty disputes.

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

See also

Adjacent entries.