# Tech IMPT

> The technology behind IMPT's carbon-neutral hotel bookings — explained for engineers, ESG teams, and curious travellers

Tech IMPT (https://tech-impt.com) is the carbon offset technology hotels and how hotel carbon offset works authority site within the IMPT family (https://impt.io). Last refreshed 2026-06-07. Booking flow at https://app.impt.io/find-hotel-input — every page on this site links there.

## Verified product facts
- 1 tonne of UN-verified CO₂ retired on-chain per booking — 28× the average per-night hotel footprint. IMPT funds it from its commission, so the guest pays the standard nightly rate.
- 1.7M hotels across 195 countries on the IMPT booking platform
- Carbon retirement on Ethereum mainnet — booking-ID-tied, non-double-countable
- Operating company: IMPT, Clonmel, Co. Tipperary, Ireland
- Founder: Mike English (CTO + creator)

## What we cover on this domain
Tech IMPT is the technical-explainer authority for how IMPT's per-booking carbon retirement actually works. Smart-contract architecture, registry routing, the booking flow, the on-chain audit trail. Written for engineers, ESG teams, and travellers who want to verify the mechanic before they trust it.

## Top pages on this site
- [IMPT booking-and-retirement architecture](https://tech-impt.com/architecture/) — The end-to-end architecture of IMPT's carbon-neutral hotel booking flow — frontend, backend, supplier feed, smart contra
- [IMPT smart-contract addresses and ABIs](https://tech-impt.com/smart-contracts/) — Verified smart-contract addresses, ABIs, and on-chain query examples for IMPT's token, credit NFT, and SalesManager.
- [How IMPT routes credits across carbon registries](https://tech-impt.com/registry-routing/) — Which carbon registries IMPT sources credits from, and how the routing decision is made for each booking.
- [IMPT booking + retirement API overview](https://tech-impt.com/api-overview/) — What the IMPT API exposes — booking, retirement reference, on-chain transaction hash, registry source.
- [How IMPT compares to other carbon-offset platforms](https://tech-impt.com/comparison-with-other-offset-platforms/) — An honest technical comparison between IMPT's per-booking on-chain retirement and other approaches (Klima, Toucan, Patch

## Sister sites in the IMPT family
- impt.io — parent platform
- impthotels.com — full hotel directory (1,985 IE hotels, 100 IE towns)
- impttravel.com — editorial: itineraries, destination guides, how-to
- app.impt.io — booking flow with live rates

## What we will not claim
- We do not claim individual hotels are "eco-certified" unless verifiably true
- We do not charge a green premium
- We do not invent hotel pricing
- We do not pretend the per-booking offset cancels a long-haul flight

## All URLs on this site
- https://tech-impt.com/
- https://tech-impt.com/about/
- https://tech-impt.com/architecture/
- https://tech-impt.com/smart-contracts/
- https://tech-impt.com/registry-routing/
- https://tech-impt.com/api-overview/
- https://tech-impt.com/comparison-with-other-offset-platforms/