Proxae

Proxae offers three tiers.

• The free tier is available without an account and provides unlimited Bitcoin-anchored proofs, public verification links, and limited web page captures.
• A free authenticated tier adds proof history and folder organization.
• The Pro tier (€4.90/month) adds RFC 3161 timestamping by Sectigo qualified under ETSI EN 319 422 and recognized under the EU eIDAS regulation, an official PDF certificate, optional identity binding through Stripe Identity, and increased capture limits.

A REST API is available for integrations.

The product is operated by EVERLATS S.L. and available in English, French, Spanish, Portuguese, and German.

💻 Developers establishing code paternity

You publish an algorithm in a research paper, a public repo, or an open-source contribution. Three months later, a startup ships a product built on it and claims original work. Git timestamps are trivially rewritable (git commit --amend --date).

With Proxae: anchor the hash of your codebase or paper before publishing. Even a single rewritten commit on the other side breaks the hash match — you keep the original, dated, verifiable proof.

🎨 Designers protecting deliverables before client review

You finish a logo, a brand book, or a UI prototype for a prospect. You send it. The prospect ghosts you. Six months later, you spot something that looks suspiciously like your work shipped under their brand.

With Proxae: timestamp every deliverable before you send it. The proof shows you had the exact files, in their exact form, on date X — before you ever showed them to the client.

💼 Freelancers protecting briefs and proposals

You send a detailed proposal to a prospect — pricing, methodology, deliverables. The prospect goes silent. Six months later, you discover they've launched the project internally, executing nearly your exact plan.

With Proxae: timestamp every proposal before sending. The proof is dated to the minute, anchored in Bitcoin, and shareable as a single link.

📐 Architects and engineers versioning iterations

A construction project goes wrong. The client claims you delivered the wrong version of the plans. You know which version was final, but proving it without a paper trail is painful.

With Proxae: timestamp each version of your BIM/CAD files at every milestone. The Pro tier produces an eIDAS-qualified PDF certificate that holds up in EU courts as a notarized timestamp.

⚖️ Lawyers timestamping client documents

A client comes to you with a sensitive document — a draft contract, a leaked memo, an email thread, a piece of evidence. You need to establish its existence at a specific date without revealing its content to anyone, including a third-party service.

With Proxae: the hash is computed in the browser. The original never reaches our servers. The Pro tier adds an RFC 3161 qualified timestamp from Sectigo, recognized in all EU jurisdictions. Identity binding via Stripe Identity is optional for stronger probative weight.

🚀 Startup founders protecting decks and pitches

You've built a deck for your fundraise. You send it to 30 VCs over two months. One of them passes — and a year later, you find out a portfolio company of theirs has launched something remarkably close to your wedge.

With Proxae: timestamp the deck before each round of outreach. You won't prevent the situation, but you'll have a clean, dated, third-party-verifiable proof that your concept predates anyone's "independent" version.