Prove you had this file — on-chain, forever. No wallet. No crypto knowledge. No notary.
Drag in any file. We hash it locally, burn the fingerprint onto Solana, and hand you a permanent proof link — a URL that shows anyone exactly when your file existed. No account. No wallet. No lawyer. Pay $49 once via Stripe. That's the whole thing.
$PROOF token on Solana with the file's hash embedded in the transaction memo. The burn is the notarization — it's irreversible, timestamped by Solana's clock, and permanently readable by any Solana explorer.Browser-side. No custody. No server. No wallet required.
A single web tool. You pay once, you get permanent access. No account. No subscription. No wallet setup — we handle the $PROOF burn on your behalf via Stripe. You get the receipt.
Local SHA-256 hashing
Your file never leaves your machine. Mark computes the SHA-256 hash in the browser using the Web Crypto API. Only the hash — 64 hex characters — goes on-chain. Nobody can reconstruct your file from a hash.
$PROOF burn via Stripe
No Phantom wallet. No seed phrases. No SOL balance required. You pay $49 once via Stripe; we handle the $PROOF token burn on Solana and return the transaction ID. Your receipt is the transaction, not our database.
Shareable proof link
A permanent URL you can send to a lawyer, a client, or a counterparty. It shows: file hash, Solana block timestamp, burn transaction ID. Anyone can verify the timestamp against the public Solana ledger — no Septim account needed.
Audit-grade receipt PDF
Download a one-page PDF: file name, SHA-256 hash, Solana transaction ID, block timestamp, and the Solana explorer verification URL. Formatted for attachment to legal filings or contract correspondence.
Septim Mark routes all payments through Stripe only. No direct USD-for-token sales, no token pre-sale, no staking mechanic. FinCEN: CLEAR conditional on this structure. Ward approval on file. This is not a financial instrument — it is a fee-for-service notarization tool that uses a token burn as its on-chain write mechanism.
$49 founding rate — first 50 buyers. Increases to $99 after. Pay once, use indefinitely. No per-notarization fee beyond the founding price.
Join the list. $49 founding rate locks on signup.
One email. When the Stripe link opens, you get it first — at $49 pay-once, not the $99 public price. No subscription, no wallet, no recurring anything. The studio ships when the list hits the build threshold; founding-rate slots close permanently when the first 50 fill.