Proofbox
Publish inventions to establish prior art. Proofbox uses trusted timestamps and paywall control to support freedom to operate and minimize dissemination.
Proofbox launched on April 22, 2026 with 3 votes, #2,709 of 21,248 launches that month and more than 50% of that year's launches.
What it does
Publish inventions as verifiable prior art. Proofbox uses a unique approach for discreet defensive publishing to preserve your space to innovate.
Every Proofbox publication is registered with a permanent DOI. It runs on the same global infrastructure used by scientific journals worldwide. The Swiss Federal Institute of Intellectual Property (IGE) names Proofbox as a recognized platform for defensive publishing. Proofbox supports inventors and companies in building a sustainable innovation strategy through efficient use of resources. With IP-related services, Proofbox helps to optimize your budget in a targeted way. In doing so we follow international requirements as well as the GDPR and relevant ISO standards, ensuring complete data sovereignty at all times. Proofbox is a platform for defensive publications and Proof of Existence…from proofbox.co
Does a similar job
all alternatives →- SVSeal – Verifiable timestamp for your private ideas2022 · docs.planet.ink · ▲113
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Source: Product Hunt launch ↗
Launched alongside, April 2026
the whole month →
- AG
Thought the resources for GPU arch were lacking, so here we are
Life & fun · Apr 2026 · jaso1024.com
Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.
AI · Apr 2026 · github.com
I made a laptop stand out of solid concrete, in the style of brutalist architecture, with themes of urbex and urban decay
Life & fun · Apr 2026 · sam-burns.com
With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
AI · Apr 2026 · text.blogosphere.app