We’ve just published a blog post explaining why we built OpenSig the way we did, and why we chose Biconomy's Web3 infrastructure. Web3 is about removing the middleman from online services, so trust and control sit with the user rather than the provider. But it has always faced a fundamental UX challenge: How do you onboard everyday users without forcing them to understand wallets, gas fees, or blockchains? The post goes into the technical details (ERC-4337, account abstraction, infrastructure choices), but it’s ultimately about Web3 product design: hiding complexity while preserving real user ownership. Thanks to the Biconomy team for the infrastructure that made this approach possible. 🔗 Blog post: https://lnkd.in/eCjPCKbK
OpenSig
Software Development
A modern way to digitally sign and timestamp files of any kind. Protect your IP and sign with your personal digital ID
About us
𝗔 𝗗𝗜𝗚𝗜𝗧𝗔𝗟 𝗣𝗘𝗡 𝗢𝗡 𝗬𝗢𝗨𝗥 𝗣𝗛𝗢𝗡𝗘 OpenSig is the simple, private way to sign documents and create independently verifiable proofs for any file. No complex workflows and no file uploads. Sign PDFs, images, videos, design files, code, ZIPs and more. Add optional encrypted notes to record purpose, intent or context. Use OpenSig to approve documents, lock in deliverables, protect your intellectual property, and timestamp important work. 𝗪𝗛𝗬 𝗢𝗣𝗘𝗡𝗦𝗜𝗚? • 𝗣𝗿𝗶𝘃𝗮𝘁𝗲 𝗯𝘆 𝗱𝗲𝘀𝗶𝗴𝗻 – your documents never leave your device • Works with 𝗮𝗻𝘆 𝗳𝗶𝗹𝗲 𝘁𝘆𝗽𝗲 𝗮𝗻𝗱 𝘀𝗶𝘇𝗲 • Create 𝗽𝗲𝗿𝗺𝗮𝗻𝗲𝗻𝘁, 𝘁𝗮𝗺𝗽𝗲𝗿-𝗽𝗿𝗼𝗼𝗳 𝗽𝗿𝗼𝗼𝗳𝘀 • Add optional 𝗲𝗻𝗰𝗿𝘆𝗽𝘁𝗲𝗱 𝗮𝗻𝗻𝗼𝘁𝗮𝘁𝗶𝗼𝗻𝘀 such as purpose or message • 𝗡𝗼 𝗮𝗰𝗰𝗼𝘂𝗻𝘁𝘀, 𝗻𝗼 𝘂𝗽𝗹𝗼𝗮𝗱𝘀, 𝗻𝗼 𝗺𝗼𝗻𝘁𝗵𝗹𝘆 𝘀𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻𝘀 • 𝗜𝗻𝗱𝗲𝗽𝗲𝗻𝗱𝗲𝗻𝘁 𝘃𝗲𝗿𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻: anyone with the file can verify your proof 𝗪𝗛𝗔𝗧 𝗬𝗢𝗨 𝗖𝗔𝗡 𝗗𝗢 • Sign and approve documents • Prove authorship of creative work • Timestamp drafts, designs and revisions • Protect ideas, pitches and deliverables • Verify file integrity before handoff • Add short encrypted notes or URLs to your signature • Share proofs with clients, collaborators or auditors 𝘕𝘰 𝘶𝘱𝘭𝘰𝘢𝘥𝘴. 𝘕𝘰 𝘤𝘦𝘯𝘵𝘳𝘢𝘭 𝘴𝘵𝘰𝘳𝘢𝘨𝘦. 𝘑𝘶𝘴𝘵 𝘴𝘪𝘮𝘱𝘭𝘦, 𝘷𝘦𝘳𝘪𝘧𝘪𝘢𝘣𝘭𝘦 𝘴𝘪𝘨𝘯𝘪𝘯𝘨 𝘺𝘰𝘶 𝘤𝘰𝘯𝘵𝘳𝘰𝘭.
- Website
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https://opensig.net
External link for OpenSig
- Industry
- Software Development
- Company size
- 1 employee
- Type
- Privately Held
- Founded
- 2025
- Specialties
- Decentralised E-Signatures, Digital Signatures, Blockchain Technology, Digital Document Verification, Encrypted Annotations, Confidentiality & Security, Public Notarisation, Smart Contract Solutions, Cryptography, IP Protection, File Integrity, Provenance, and E-Signatures
Employees at OpenSig
Updates
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Designers, artists, writers, photographers, and developers all share a common challenge: digital work is easy to copy, modify, and misattribute. Once a file is shared, it can quickly lose its context — who created it, when, and in what form. OpenSig is designed to fit quietly into creative workflows. It allows creators to generate verifiable proof for any file — a draft, a final deliverable, a release version — without uploading the file or changing how they work. Each proof anchors a specific version of a file to a point in time and to the creator’s identity, with optional context about purpose or intent. If questions arise later — about authorship, timing, or integrity — that evidence can be independently verified. This doesn’t replace copyright or contracts. It strengthens them by reducing ambiguity and preserving provenance at the moment work is created or shared. For creators, OpenSig is about confidence: knowing your work can stand on its own, even outside the platforms where it was made or distributed.
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🚀 Introducing the OpenSig Public Beta Today, we’re excited to open the public beta of OpenSig — a new way to create verifiable proofs of authorship, identity, and file integrity for any digital file. OpenSig is designed for creators, professionals, teams, and anyone who works with digital assets and needs a simple, trustworthy way to: ✨ Prove who created a file and when ✨ Verify that a file hasn’t been altered ✨ Record approvals, sign-offs, and intent ✨ Generate permanent, independently verifiable proofs All while ensuring: 🔒 Your file never leaves your device ⚡ Fast, private, and easy — with no subscriptions or complex workflows OpenSig works with any file type and any size — from PDFs and images to videos, design assets, research documents, zip files and code. If it’s a file, you can prove it. 🌍 Why this matters In a world where digital work moves fast and is easily copied, or disputed, OpenSig offers a simple way to anchor your work in time — permanently. With a fast changing AI landscape, OpenSig allows you to assert authenticity over your work and record when it was created. Whether protecting authorship, managing client approvals, or safeguarding integrity, OpenSig gives you a digital seal you control. 🎉 Try the public beta We welcome early users to download the app, try stamping a real file, and share feedback as we continue shaping the product. 🔗 https://opensig.net Thank you for supporting the early stage of our journey. More updates coming soon. — The OpenSig Team