Efficiency Heating & Cooling — fact sheet version history

Every version of this business's fact sheet is hashed and published here with its fingerprint, superseded versions included, so the history is tamper-evident: change a byte in any published version and its fingerprint stops matching. Current version v7, attested by Michael Emery, Sapid Agency (site management for eheatcool) on 2026-08-08.

Every row reading PENDING_ANCHOR means the hash is final and size-checked but nothing has been broadcast to a public ledger yet; anchoring a version later changes nothing about it. A version file, once published here, is never edited — a new version is a new row.

This page is generated by AIgentCandor from the profile the business signed off. It is a record of what the business attested and when — not our endorsement of the facts, and never a verification of identity. The machine-readable copy is eheatcool.com.stamps.json; the vocabulary is defined in the glossary.