VeilChain: A Zig-based quantum-resistant shielded PoW testnet prototype
VeilChain is a Zig-based blockchain node. Today it already includes a functional Proof-of-Work loop (Blake3-backed header hashing), an ASERT-like difficulty retargeting hook, chain append/validation checks, and a local multi-node testnet runner you can launch from the CLI (status, mine, testnet). It also ships early ledger primitives (note commitment, nullifier derivation + nullifier set, and a commitment tree) as foundations for the later shielded transaction + proof system work.
What s implemented right now:
Consensus foundation (prototype): PoW header hashing + meetsTarget() and a working mining loop
Chain logic: genesis + sequential append validation (prev_hash, height, pow target)
Difficulty retargeting (prototype): ASERT-like target adjustment utility used by the chain
Testnet runner: local multi-node simulation that mines blocks across nodes
Ledger primitives (foundation): note commitments, nullifier derivation/set, simple commitment tree root
Why this matters:
If you re building toward post-quantum and shielded-chain designs, you need an execution layer that s deterministic and testable. VeilChain provides a real, runnable base in Zig so the next milestones (p2p connectivity, persistence, shielded transaction circuit/proofs, full RPC surface) can be added incrementally without losing correctness.
Managed cloud infrastructure that doesn't drain your budget
We built Super Clouds for teams tired of overpaying on AWS, GCP, and Azure. Same compute, storage, and networking you're used to, but at a fraction of the cost. No surprise bills. No complex pricing pages. Just clean, powerful cloud hosting with real human support.
If you're a startup watching every dollar or an enterprise looking to cut cloud spend, check it out. Would love feedback from the community.
https://superclouds.io
Launched today. Koalr — deployment risk scoring for every PR, before it merges

Hey everyone Andrew here, founder of Koalr. We just launched.
Koalr scores every pull request 0 100 for production risk before it ships. It uses 36 research based signals things like file change blast radius, author expertise drift, CODEOWNERS violations, CI history, and time-of-week patterns to flag risky deploys before they become 2am incidents.
It connects to GitHub in minutes, no code access needed we only read metadata.
Got rejected by YC, building VertoX anyway
Hey everyone
Over the past ~6 months, I applied to Y Combinator a few times, but didn t get in.
We re still early (pre-seed), but the process actually helped me think much deeper about what we re building.
Right now, I m working on VertoX, a real-time voice translation that lets you speak any language on calls while keeping your tone, emotions, and your own voice.
Built a shipping notification tool for Shopify sellers — Beta is free
Built a shipping notification tool for Shopify sellers Beta is free
Hey! I built ParcelPing after getting tired of "Where is my package?"
emails every day.
Auto-tracks via 17track emails customers in EN/KR/JA the moment
Designing for 2026: Why calculators don't have to be boring anymore 🚀
Hi Product Hunt community!
I m Todoroki, and I ve spent the last few weeks obsessing over a simple question: Why do most utility apps still look like they belong in 2010?
Tomorrow, I m launching the Todoroki Calculator 2026. My goal wasn t just to build a tool that adds numbers, but to create a Glassmorphism masterpiece that feels fast, modern, and inspiring to use.
This is just the first step in my journey to build The Master Hub (a suite of 100+ modern tools), but I wanted to start by reinventing the most basic tool we use every day.
I d love to hear from you:
Do you care about the UI of your daily tools?
What s one "boring" app you wish had a futuristic redesign?
Can t wait to share the full launch with you all tomorrow! Hi Product Hunt community!
I m Todoroki, and I ve spent the last few weeks obsessing over a simple question: Why do most utility apps still look like they belong in 2010?
Tomorrow, I m launching the Todoroki Calculator 2026. My goal wasn t just to build a tool that adds numbers, but to create a Glassmorphism masterpiece that feels fast, modern, and inspiring to use.
This is just the first step in my journey to build The Master Hub (a suite of 100+ modern tools), but I wanted to start by reinventing the most basic tool we use every day.
I d love to hear from you:
Do you care about the UI of your daily tools?
What s one "boring" app you wish had a futuristic redesign?
Can t wait to share the full launch with you all tomorrow!
Didn’t expect this today
Didn t expect this much activity today.
A lot of people trying the product, building agents, sharing ideas. Super interesting to see how differently teams approach it. Some go straight into ops and support, others start with leads or research.
Feels like we re just at the beginning of figuring out how this should actually work.
We just launched a tool for launched and in-development products.
Hello fellow managers and developers,
We have built and launched kibbar.com for the productivity of launched and in-development products.
We help in tracking the reviews and sentiments of the users on the Play Store and App Store.
And for development, we provide the distribution platform for the android and iOS development so that testing apps can be distributed without any hassle of store setup.
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There is a Short URL service that provides detailed analytics of the Short URL created.
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