Bitcoin testnet4 · Spark REGTEST · no mainnet paths
Creative Bitcoin
👗 Fashion & Textile Design · batch quality control

FabricBatch Chain

Log fabric batch quality certifications on-chain for designer trust and compliance.

OP_RETURN provenance on testnet4· onchain timestamp
Section · Onchain

The primitive.

full primer →

Batch quality control gets a SHA-256 anchored into a Bitcoin testnet4 OP_RETURN — fashion designers see a 'timestamped on Bitcoin' chip and a permanent mempool.space link.

Why this primitiveAnchoring a SHA-256 fingerprint of this artefact in a Bitcoin testnet4 OP_RETURN gives it a wallet-independent, permanent, one-line proof-of-existence.

Kernel
a SHA-256 of any artifact anchored into a Bitcoin testnet4 OP_RETURN output — a one-line, immutable, wallet-independent proof-of-existence
Drives the UI as
a 'timestamped on Bitcoin' chip with block height + a mempool.space testnet4 tx link
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
$1.2B
fashion design software market
SAM
$135M
textile quality management tools
SOM
$11M
manufacturers providing batch traceability

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

See also

Adjacent entries.

material provenance
FabricTrace Ledger
Track and verify organic fabric sources to assure sustainable fashion claims.
design copyright
DesignAuth Mint
Securely register and timestamp original fashion designs to prevent copying.
color curation
ColorPalette DAO
Collaboratively create and share color palettes with verified ownership and royalty rules.
virtual try-on
VirtualFitting NFT
Create unique virtual fitting sessions minted as NFTs for secure client access.