IEEE ClimateChain Global Hackathon 2026 · Climate Data & Environmental Monitoring
Climate claims that can show their work.
A reported climate figure is usually just a number. Grounding turns it into a record you can check: the evidence, the figure rebuilt from it, every call a person made, and a signature that breaks if anything changes.
You are the verifier. Pick a claim: it is rebuilt in your browser, you record your verdict and sign it, and anyone can verify the record.
Six claims waiting for review
- Office building Bear_assembly_Angel in California emitted 278.92 tCO₂e from grid electricity, January to March 2016.Review this claim →
- A load shift asked for 120 MWh is capped at 100 MWh, because the forecast behind it scores 0.647 on Energy-EVA's published benchmark.Review this claim →
- At least 11,974 hectares burned in satellite scene T10SEH, northern California, July 2018.Review this claim →
- NASA test cell B0005 kept 71.4% of its first recorded capacity after 168 cycles (66.3% of its 2 Ah rating), its internal resistance rose 28%, and it goes to recycling, not a second life.Review this claim →
- In these 100 issuance and 100 retirement records, no carbon credit was retired twice or beyond what was issued.Review this claim →
- LPL Construction reported 601.26 tCO₂e of Scope 1 emissions for 2025.Review this claim →
Findings from rechecking the evidence; not an assurance opinion.
On the map
- (site-level point, not the building itself)
- (outlined)
- (dashed states). The records name 105 projects; the pinned project list places 13 of them in US states and 1 outside the US. The other 91 have no location in the committed records.
- : wildfire risk to buildings, by county, tract and block, and for each building when you zoom in; "Change" shows where it rises or falls by ~2047.
Also on the map: the battery cell's test site, NASA Ames, and the energy forecast's market, the whole of India. Not on the map: the company disclosure, whose page names no site. (Overture Maps Places has one "LPL Construction Ltd", in Alberta, Canada, with nothing tying it to the claim, so it is not used.)
How it works
- 1
A claim comes in
with its evidence: meter data, a registry export, a satellite scene, a company's own page.
- 2
It is rechecked
Grounding rebuilds the figure from that evidence, in your browser, and flags data that looks wrong.
- 3
A person decides
each flag, and the claim itself, gets a named decision tied to the exact data it was made on.
- 4
It is signed
the evidence, the decisions and the result become one record, signed with Ed25519 and post-quantum ML-DSA-65.
- 5
Anyone verifies
open the record on any computer. Change one number in it and the signatures no longer match.
Why a number on its own isn't enough
- You see the total. You don't see the meter readings, the emission factor, or the readings someone left out.
- You can't tell who decided what about the odd data, or whether anything changed after they did.
- Putting it on a blockchain proves a record wasn't changed. It doesn't prove the number was right.