Bitcoin testnet4 · Spark REGTEST · no mainnet paths
Creative Bitcoin
✍️ Writing, Poetry & Narrative · story validation

PlotProof

Timestamp story drafts to prove originality and track narrative evolution over time.

OP_RETURN provenance on testnet4· onchain timestamp
Section · Onchain

The primitive.

full primer →

Story validation gets a SHA-256 anchored into a Bitcoin testnet4 OP_RETURN — writers 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
$1.5B
global writing market
SAM
$500M
self-publishing tools
SOM
$40M
onchain literary authentication

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

See also

Adjacent entries.

poetry archiving
VerseLedger
Securely timestamp and prove original poem authorship on the blockchain to prevent plagiarism.
interactive storytelling
NarrativeVote
Enable readers to vote on story plot directions through blockchain-based decision contracts.
screenwriting rights
ScriptRoyalty
Automate royalty distribution for collaborative screenplays using verified smart contract agreements.
collaborative poetry
PoetChain
Facilitate co-authored poems with edit histories securely stored on blockchain for trust.