Discover. Connect. Enhance.
uncrack is the technology-driven green bean auction platform built by EGGSTONE, a data-science and AI company. Behind every lot stands the uncrack engine: one connected intelligence spanning green chemistry, roasted profiles and the roast itself. See the unseen, powered by data and intelligence.
Not a scoring tool — an intelligence. The Engine is built on years of paired measurements across green beans, roasted beans and the roasting process, one of the deepest coffee databases of its kind, resolved by machine-learning models into evidence you can bid on. Every auction feeds it; every season it predicts sharper.
The numbers behind the engine — signals, components, taste axes, scans — live on The Data.
An auction exists to discover differentiated quality because difference creates value.
The industry has long relied on sensory evaluation: five senses and experience. It works, but it isn’t enough. A score alone can’t fully explain what makes one lot different from another. It can’t explain why that difference exists, prove what lies behind it, or help reproduce it next season.
In a market where a 0.13-point difference can lead to 4.5× the bids and 3× the hammer price, the missing information matters. So we built an auction around what sensory scores alone cannot reveal.
Best of Panama 2025, Geisha Washed — 94.63 drew 658 bids at $6,105/kg; 94.50 drew 148 at $2,040/kg.
CGLE V-auction 2025 — 94.25 hammered 13× higher than 94.00, from the same region.
#apple #pear vs #apple #chestnut-honey. Which do you bid on, and why? The score alone can’t say.
Scores vary by person, culture and region — nothing anchors them at the green stage.
Chemical composition reveals true value with clear, measurable proof.
Exceptional lots remain disconnected, undiscovered, undervalued.
Data surfaces what a palate missed, then carries it to the world — trusted, traceable, traded on one floor.
Value stays vague; entry barriers stay high; many lots are never seen.
Price driven by data, aligned with quality, built for long-term growth.
Data discovers the hidden value.
One NIR scan resolves a green lot into 16 chemical components, five taste axes and quality indices — its potential read objectively, before the first roast.
Bridge origin to the world.
One live floor, one shared timeline. A producer in Santa Bárbara and a roaster in Berlin bid on the same evidence — anonymous paddles, exporter-settled.
Proof raises price.
Visualizing a coffee’s strengths with data enhances its value. Every farm gets its analysis back, win or lose — and the evidence compounds each season.
We believe great coffee is not found by chance; it is cultivated. Both auctions were led by EGGSTONE as part of a national project by Busan Technopark, working with partners at origin.
Honduras Discovery: Next Gen Auction
Discovering emerging producers across Honduras and bringing them to the global stage, with their coffee’s value demonstrated through data. In partnership with IHCAFE.
Colombia Frontier: Science of Nature Auction
In partnership with Colors of Nature, experimental green beans created through microbial fermentation are analyzed through data and AI, revealing their potential before they reach the market.
One submission brings your coffee into view through data.
The engine reads its chemistry. You receive the full report, whether it sells or not.
Your lot is introduced with its evidence attached.
Buyers worldwide bid on its proven value; it sells at the price it deserves.
Create an account, accept the terms, request samples.
Chemical components, taste potential, and quality signals — set your ceiling.
One shared timeline, tiered increments, anti-snipe close.
Confirmed at the hammer; the exporter ships and settles directly.
Won on value, not reflexes.
A washed Geisha at $92.50/kg. Three teams watch the same number. A bid lands in the final minute — the clock resets to five. No sniping, no backroom deals. Every buyer sees the same evidence, and the price is discovered in the open.
Great coffee deserves to be seen.
Data makes it visible.
26 lots are open right now. Read the evidence. Find your lot. Make your bid.