Integrity ledger
Every flag, confirmation result, mitigation commitment, metered reading and monthly scorecard is written into an append-only hash chain, and the chain is time-stamped on Bitcoin through OpenTimestamps. Anyone can check that no record was changed after it was written.
- Entries in the ledger
- 4
- Chain heads stamped
- 2
- Latest Bitcoin block
- #970337
Check the chain yourself
Your browser downloads every entry, recomputes each SHA-256 hash and follows every link. Nothing on this page is taken on trust.
Bitcoin anchors
Each time the chain grows, its head is sent to two free OpenTimestamps calendars, which commit it to a Bitcoin block within hours. We then check each proof against that block's Merkle root.
| Stamped | Covers | Calendar | Bitcoin | Proof files |
|---|---|---|---|---|
| 7 Oct 2026, 04:45 pm | entries 1–4 | b.pool.opentimestamps.org | block #970337 | .txt · .ots |
| 7 Oct 2026, 04:45 pm | entries 1–4 | a.pool.opentimestamps.org | block #970335 | .txt · .ots |
Latest entries
- #4ScorecardScorecard for 2026-094fcaa960f2c75716…
- #3FlagBhalswa: T2 flag on the pass of 2025-05-18cbadf6dd3ebe409c…
- #2FlagDeonar: T1 flag on the pass of 2025-01-06cbc87197a5a4286e…
- #1FlagOkhla: T2 flag on the pass of 2024-11-2960ea40124c6bbfc5…
Verify a proof without us
- Download a head's .txt file and its .ots proof from the table above.
- The .txt file holds the entry number and hash it stamps; the checker above shows the same hash for that entry.
- Drop both files on opentimestamps.org (or run ots verify) to see the Bitcoin block that proves they existed at that time.
The ledger holds no personal data: no names, emails, notes or report text. A timestamp proves a record existed and has not changed since; it does not turn a screening-grade figure into a verified one.
Screening-grade satellite estimate: confirm with a hyperspectral satellite, an OGI drone or a ground survey before enforcement or carbon crediting.