How we verify. Receipts, not vibes.
Every fact on ProcuraGY traces back to an official document you can open yourself. This page explains where the data comes from, how each field earns its receipt, and exactly how the confidence score is computed — including what it does not promise.
Right now: 997 tenders · 75,557 evidence links · 6 live sources · 21 registered
Where the data comes from
We collect only publicly published procurement notices. Live today: the national eProcure portal; the National Procurement and Tender Administration Board (NPTA) — opportunities, awarded tenders, and opening minutes; Guyana Water Inc’s procurement notices; and the petroleum-sector Local Content Register. The Official Gazette, individual ministry pages, and public newsprint are registered in our source registry and come online next. Sources are tiered by authority, and a tender’s score starts from the strongest source it appeared in.
Our crawler is polite and identifiable: it respects robots.txt, waits at least five seconds between requests to the same domain, and announces itself with a contact URL — details on the crawler page. Every captured document is archived unmodified for verification, and we always link to the original.
Every field carries a receipt
When a notice is parsed, each extracted field — deadline, value, entity, category — is stored together with the document it came from, the exact text snippet that justifies it, the capture timestamp, and the extractor’s own confidence. That bundle is the receipt you see on every tender page.
A tender cannot enter this database without at least one receipt. If a source didn’t publish a field, we say “Not published” — we never guess.
The confidence score, step by step
Every tender gets a score between 0.00 and 1.00, computed by the same deterministic formula for every record — no editorial thumb on the scale. The result is clamped to that range, and every recompute is logged with its full breakdown so score changes are auditable.
Start from the source
0.55 / 0.45 / 0.35Tier 1 national portals (eProcure, NPTA) start highest, then official ministry and agency pages, then reputable secondary sources. Search-discovered leads start at 0.10 and are never published until promoted.
Add field completeness
up to +0.20Each required field present adds a small bonus: title +0.04, procuring entity +0.05, deadline +0.05, category +0.02, estimated value +0.03, region +0.01 — capped at +0.20.
Add cross-source corroboration
+0.15 / +0.20Found independently in two official sources: +0.15. In three or more: +0.20. A match requires both sources printing the same published reference number (e.g. NCB-GWI-W138-2026), or a near-identical title and a deadline within ±2 days for the same procuring entity — or, when two publishers attribute one tender to different agencies (a ministry and its utility, say), an almost exact title match with the boilerplate stripped and a closing date matching to the day.
Add lifecycle confirmations
up to +0.10Appearing in NPTA opening minutes +0.05, in NPTA awarded tenders +0.10, in the DPI bulletin +0.03 — capped at +0.10 combined.
Subtract conflicts
−0.05 to −0.20When sources disagree we penalise instead of picking a winner: deadlines more than 2 days apart −0.15, estimated values more than 10% apart −0.05, procuring entities that don't match −0.20 (and the record is flagged for human review).
Subtract staleness
−0.05A deadline that passed more than 30 days ago with no award observed costs −0.05.
Worked example: a tender on a Tier 1 portal (0.55) with every required field (+0.20), also found in a Tier 2 bulletin (+0.15 cross-source, +0.03 lifecycle) and with no conflicts scores 0.93.
What the tiers mean
- A0.930.85 – 1.00
Verified-grade
90 tenders todayThe arithmetic cleared the Verified bar. With independent cross-source corroboration, these earn the Verified seal below.
- B0.740.65 – 0.84
Likely official
521 tenders todayA single official source with strong field completeness. Most tenders live here.
- C0.550.40 – 0.64
Needs review
386 tenders todayA weaker extraction or a more ambiguous source. Read the receipts before relying on it.
- D0.250.00 – 0.39
Unverified
0 tenders todayA weak or partial parse. Shown only so nothing is hidden — treat as a lead, not a fact.
Live tally across 997 publicly listed tenders, recounted on every page load.
The Verified seal is stricter
Verified0.93A score of 0.85 is necessary but not sufficient. The Verified seal additionally requires at least one independent cross-source corroboration, no unresolved conflicts between sources, and a positively identified procuring entity. Corroboration means the same tender found in a second official source — the matching tolerates publishers attributing one tender to different agencies (a ministry and its water utility, say) but only when the notice titles agree almost exactly and the closing dates match to the day.
Today, 2 of 997 tenders carry the seal. Most Guyanese tenders are published in exactly one official place, so independent corroboration is genuinely rare. We’d rather the seal stay rare and mean something than inflate it.
What the score does not promise
- That the source itself is correct — only that we faithfully captured and, where possible, corroborated what it published.
- That the tender is currently open — check the deadline; we keep expired notices for the historical record.
- That the awardee on file is final — awards can be appealed through the Public Procurement Commission.
- That estimated values will match final award values.
Spotted an error?
Every tender page has a Report an issue button. Reports go straight to the founder and are reviewed within 48 hours. If official sources genuinely conflict, we pull the record into an “under review” state — hidden from the public site — until every field is re-verified, rather than leaving a disputed number up.
Browse tenders and open the receipts →Formula changelog
v3 — the original formula, in effect since launch. Any change bumps this version, is annotated here, and triggers a recompute of every historical score.