Case study

The registry radar that turns open data into sales signals.

Sales lists decay silently. Companies enter liquidation, new companies appear, and VAT registrations reveal businesses that may have crossed from side project into real operating company.

Internal data system · Estonian open dataDaily Business Register open-data downloadSnapshot diff on registry codeNew registration, new VAT and liquidation reportsCall-list reconciliation against the register snapshotRead-only report mode before CRM writesSystemd timers and Slack/report sinks41 unit tests recorded in the system cards

376,365

entities in the recorded extract

unit tests for the radar tooling

219 / 292

rows matched on first hygiene run

live liquidation found on first hygiene run

How these were measured: Source: operations/systems/B-12-registry-radar-ariregister-daily-diff.md and B-11-list-hygiene-call-list-register-reconcile.md record the extract size, timers, report mode, tests and first reconciliation result.

What we shipped

Registry radar downloads the Estonian Business Register open-data extract, diffs it against yesterday, and reports new registrations, new VAT numbers and status changes. List hygiene then reconciles the live call list against that snapshot so humans see do-call and do-not-call signals before writing anything into CRM.

Daily Business Register open-data downloadSnapshot diff on registry codeNew registration, new VAT and liquidation reportsCall-list reconciliation against the register snapshotRead-only report mode before CRM writesSystemd timers and Slack/report sinks41 unit tests recorded in the system cards

What this page does not claim

No raw company list, contact list, personal data, Slack webhook, environment path or CRM table detail is exposed.
No revenue, meeting or close-rate claim. The cards prove signal generation and reconciliation, not sales outcomes.
The system cards mark owner confirmation as pending, so the page stays conservative and internal-proof only.

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