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HORIZON SHIELD
Bitcoin-Anchored AI by Dropout Carpenter vs Quote Fraud
I'm Toshikatsu Oga — middle-school dropout, 30-year veteran carpenter from Japan. Self-taught AI in 1 year. Published cryptographic audit hash paper on engrXiv and anchored to Bitcoin Block #949356. HORIZON SHIELD protects homeowners from quote fraud with verifiable 12-char audit hash. Paper: https://engrxiv.org/preprint/view/7007 Live: https://shield.the-horizons-innovation.com From dirt-covered hands to immutable code.
I spent 30 years on Japanese construction sites watching homeowners get systematically overcharged. That pain is what drove me to build this.
The core idea is simple: every AI-generated cost estimate now comes with a verifiable 12-character audit hash anchored to Bitcoin. No more “trust me.”
I’d genuinely love your brutal feedback — especially if you work in construction, real estate, or have been burned by renovation quotes before.
What’s the biggest problem you see with current cost estimation tools?
Looking forward to the conversation.
About HORIZON SHIELD on Product Hunt
“Bitcoin-Anchored AI by Dropout Carpenter vs Quote Fraud”
HORIZON SHIELD was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #160 on the daily leaderboard. I'm Toshikatsu Oga — middle-school dropout, 30-year veteran carpenter from Japan. Self-taught AI in 1 year. Published cryptographic audit hash paper on engrXiv and anchored to Bitcoin Block #949356. HORIZON SHIELD protects homeowners from quote fraud with verifiable 12-char audit hash. Paper: https://engrxiv.org/preprint/view/7007 Live: https://shield.the-horizons-innovation.com From dirt-covered hands to immutable code.
On the analytics side, HORIZON SHIELD competes within Artificial Intelligence, Bitcoin and Construction — topics that collectively have 471.9k followers on Product Hunt. The dashboard above tracks how HORIZON SHIELD performed against the three products that launched closest to it on the same day.
Who hunted HORIZON SHIELD?
HORIZON SHIELD was hunted by THEHORIZONS INC. 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 HORIZON SHIELD including community comment highlights and product details, visit the product overview.
THEHORIZONS INC
Hey everyone,
Thank you for checking out HORIZON SHIELD.
I spent 30 years on Japanese construction sites watching homeowners get systematically overcharged. That pain is what drove me to build this.
The core idea is simple: every AI-generated cost estimate now comes with a verifiable 12-character audit hash anchored to Bitcoin. No more “trust me.”
I’d genuinely love your brutal feedback — especially if you work in construction, real estate, or have been burned by renovation quotes before.
What’s the biggest problem you see with current cost estimation tools?
Looking forward to the conversation.