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Evidence & methodology

Groundnova evidence standard

This page describes how Groundnova classifies, timestamps, verifies, and restricts research inputs. Public samples below are redacted excerpts from official records — not deal-specific materials.

Evidence standard

  • Every research input must cite a named source, publisher, and capture timestamp.
  • Verification state is assigned only after authority and date are confirmed against the source record.
  • Deal-specific economics, counterparties, and contractual terms are never published without documented sharing permission.
  • Stale inputs beyond freshness windows are flagged for re-verification or archival.

Source classification hierarchy

  1. 01Primary official record (land registry, municipal gazette, court filing, regulator publication)
  2. 02Secondary institutional publication (municipal protocol, agency guidance, parliamentary record)
  3. 03Tertiary market commentary (press, broker note, industry report) — never used as sole basis
  4. 04Internal analyst note — must reference at least one primary or secondary source

Date freshness windows

Source typeMaximum age before re-verification
Land registry / title record90 days
Municipal protocol / planning180 days
Corporate registry filing365 days
Market commentary30 days (or superseded)

Restriction handling

Materials marked RESTRICTED are withheld from public view until source authority and recipient suitability are confirmed. Declined or archived entries remain in the internal register as historical evidence records but are not promoted as active opportunities.

Sample public evidence notes

Redacted excerpts from official public records. SHA-256 hashes identify the captured source file at time of ingestion.

Conservatória do Registo Predial — Lisbon excerpt (redacted)

Publisher: Instituto dos Registos e do Notariado (IRN)

Verified inputs
Capture timestamp (UTC)
2026-04-12T09:14:22Z
Source SHA-256
a3f2…8c1d [redacted sample hash]

[REDACTED] Property description and encumbrance fields confirmed against IRN online consultation. Parcel identifiers withheld. No ownership or transaction details published.

Municipal affordable housing protocol framework (redacted)

Publisher: Câmara Municipal [withheld]

Under review
Capture timestamp (UTC)
2026-03-28T14:02:11Z
Source SHA-256
7b91…4e2f [redacted sample hash]

[REDACTED] Protocol references master-lease contracting principles. Specific municipality, allocation terms, and counterparty details withheld pending authority confirmation.

UK local authority housing delivery guidance excerpt

Publisher: UK Ministry of Housing, Communities & Local Government

Research thesis
Capture timestamp (UTC)
2026-02-15T11:30:00Z
Source SHA-256
c4d8…1a7b [redacted sample hash]

[REDACTED] Guidance on long-term contracting models for affordable housing delivery. Research thesis only — no specific authority engagement confirmed.

Portuguese commercial registry excerpt — Aurum Frux Lda (redacted)

Publisher: Registo Comercial / RNPC

Verified inputs
Capture timestamp (UTC)
2026-01-20T08:45:33Z
Source SHA-256
e2f6…9d3c [redacted sample hash]

[REDACTED] Corporate form and registered office confirmed. Financial statements and shareholder details withheld.

Confidential deal-specific details are withheld subject to suitability and authority review. Sample notes are provided for methodology transparency only and do not constitute an offer, recommendation, or verified investment opportunity.