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usci-check
Verify Chinese business-licence codes offline, in-browser
Every Chinese company's business licence carries an 18-character registration code (USCI). The code has internal structure and a GB 32100-2015 check character, so a code copied from a licence photo can be verified offline - no registry access needed. Free in-browser checker plus an open-source MIT library (zero dependencies), tested against 2,149 real codes from official disclosure files. Honest limit built in: a passing check proves correct transcription, not that the company exists.
Hi Product Hunt - I run a small verification studio helping importers check Chinese suppliers. A recurring problem: the 18-character registration code on Chinese business licences gets mistyped or invented, and most buyers can't reach the official registry to check. The code itself has structure and a check digit (GB 32100-2015), so transcription errors are catchable offline. We open-sourced the checker (MIT, zero dependencies, tested against 2,149 real codes from government disclosure files) and put a free browser version online - nothing you type leaves your browser. One honest limit, stated on the page itself: a passing check proves the code was transcribed correctly, not that the company exists or deserves your money. That needs the actual registry record. Feedback very welcome, especially from anyone who sources from China.
About usci-check on Product Hunt
“Verify Chinese business-licence codes offline, in-browser”
usci-check was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #133 on the daily leaderboard. Every Chinese company's business licence carries an 18-character registration code (USCI). The code has internal structure and a GB 32100-2015 check character, so a code copied from a licence photo can be verified offline - no registry access needed. Free in-browser checker plus an open-source MIT library (zero dependencies), tested against 2,149 real codes from official disclosure files. Honest limit built in: a passing check proves correct transcription, not that the company exists.
On the analytics side, usci-check competes within Open Source, Developer Tools, GitHub and E-Commerce — topics that collectively have 670.8k followers on Product Hunt. The dashboard above tracks how usci-check performed against the three products that launched closest to it on the same day.
Who hunted usci-check?
usci-check was hunted by Derrick. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of usci-check including community comment highlights and product details, visit the product overview.
Derrick