Bitcoin testnet4 · Spark REGTEST · no mainnet paths
Creative Bitcoin
🎵 Music & Sound Design · composition sharing

Composer Collab

Securely share and timestamp collaborative compositions with permanent version control.

Ordinals inscription (testnet4)· onchain authorship
Section · Onchain

The primitive.

full primer →

Musicians inscribe each composition sharing as an Ordinal on Bitcoin testnet4, minting a permanent, wallet-owned inscription ID with the artifact bytes carried directly in the witness.

Why this primitiveWriting the artefact bytes directly into a Bitcoin testnet4 taproot witness mints an ownable inscription that travels with the creator's address.

Kernel
a taproot inscription that writes the artifact bytes directly into a Bitcoin testnet4 witness, minting an inscription ID owned by the creator's address
Drives the UI as
an 'inscribed on Bitcoin' badge with the inscription ID and an ordinals.com testnet preview
Appendix · Secrets

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 ↗
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 — it carries its own feature spec, code, setup and checklist. read the build strategy →

loading the build spec…
Open in Lovable ↗mempool.space testnet4 ↗
Appendix · Market

Market sizing.

TAM
$900M
online composition tools
SAM
$230M
collaborative composition market
SOM
$18M
composers using verified shared scores

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

See also

Adjacent entries.

beat ownership
BeatLedger
Record and prove ownership of beats and instrumentals on a decentralized archive.
sound design catalog
Synth Patchbook
Create a permanent catalog of unique synth patches for community sharing and licensing.
remix management
Remix Rights
Track remix permissions and derivatives with permanent records linked to original works.
loop exchange
LoopSwap
Decentralized platform for permanent loop exchange with verified content provenance.