Methodology·v4 — awaiting sign-offEngine·v0.3Emission factors·DEFRA UK GHG 2024Last sign-off·22 Apr 2026Audit chain·✓ verified
Ledger
Footprint Ledger
Pawston Cat Foods Ltd · 247 records
Every change to your inventory is logged with a cryptographic hash of the previous event. Replay the chain to confirm nothing has been altered after the fact.
Factor library pinned · DEFRA 2024 v1.2
Verify chain
Replay every audit event and recompute the hash chain. If a single row was edited or deleted in the database, this check will catch it.
Factor library snapshot
Factor library pinned at calculation time — every record carries its source library + version.
DEFRA 2024 v1.2
205 records
UK Government · BEIS conversion factors
Carbon Trust Energy 2023 v1.0
42 records
Carbon Trust · spot-market UK electricity
Audit events
Click any row to inspect the full before/after snapshots.
| Time | Actor | Action | Entity | Summary |
|---|---|---|---|---|
| Today, 14:22 | Nico Henryanalyst | classification_override | ActivityRecord #2087 | Classification override on tinned-tuna ingredient · rationale: estimation methodology revised |
| Today, 09:48 | AI · cn_classifierai · auto | classification_override | ActivityRecord #2086 | Auto-classified 12 imported-can records with CN 73101000 (analyst-approved) |
| Yesterday, 16:05 | Aishani Iyeranalyst | factor_swap | ActivityRecord #1981 | Pinned Octopus Energy market-based factor for FY2024 grid electricity |
| Yesterday, 11:30 | Rule · pedigree_recomputerule | pedigree_edit | ActivityRecord #1962 | Pedigree recomputed after Hartmoor Dairy primary-data submission |
| 2 days ago | Nico Henryanalyst | supplier_added | Supplier #88 | Added supplier · OCP Maroc (fertiliser, Morocco) |
| 2 days ago | AI · supplier_extractorai · manual | supplier_added | Supplier #87 | Extracted Wexford Steel Forms from PO #PO-FY24-1893 · pending analyst sign-off |
| 3 days ago | Tamarside Meatsanalyst | pedigree_edit | ActivityRecord #1854 | Supplier uploaded Q3 slaughter + chilling energy logs · Tier 2 → Tier 1 |
| 3 days ago | Rule · cbam_scope_checkrule | classification_override | ActivityRecord #1842 | Auto-flagged 9 aluminium-foil records as CBAM-in-scope (CN 76072000) |
| 4 days ago | Nico Henryanalyst | factor_swap | ActivityRecord #1798 | Swapped DEFRA spend-based factor for primary supplier intensity (Norsk Hydro) |
| 4 days ago | Diego Salazaranalyst | supplier_added | Supplier #86 | Added supplier · Yumi Pet Foods (UK private-label) |
| 5 days ago | System · factor_pack_importrule | factor_swap | FactorLibrary #4 | DEFRA UK GHG 2024 v1.2 factor pack imported · 47 factors version-pinned |
| 5 days ago | AI · pedigree_assistantai · manual | pedigree_edit | ActivityRecord #1715 | Suggested pedigree downgrade on stale 2022 grid factor · accepted by Nico |
| 6 days ago | Fenshire Produceanalyst | pedigree_edit | Supplier #41 | Acknowledged engagement invitation · survey due 14 May |
| 6 days ago | Jane Doeanalyst | classification_override | ActivityRecord #1612 | Reclassified packaging film weight basis · LDPE corrected to LLDPE |
| 7 days ago | AI · cn_classifierai · auto | classification_override | ActivityRecord #1588 | Auto-classified 28 cement records with CN 25232100 (analyst-approved) |
| 7 days ago | Nico Henryanalyst | supplier_added | Supplier #85 | Added supplier · Pawston Pack Co (corrugated trays, UK) |
| 8 days ago | Nico Henryanalyst | factor_swap | ActivityRecord #1502 | Signed off Q2 inventory snapshot · Methodology v3 hash 9c2f1e |
| 9 days ago | Rule · longitudinal_checkrule | pedigree_edit | ActivityRecord #1488 | Uncertainty narrowed: GSD 1.51 → 1.42 after 4 spend-based suppliers upgraded |
| 10 days ago | Marta Kowalskaanalyst | supplier_added | Supplier #84 | Added supplier · AquaFeed Lda (fish-meal, Portugal) |
| 11 days ago | Nico Henryanalyst | classification_override | ReportingPeriod #7 | Opened Pawston FY2024 workspace · pinned baseline period |