Obsign
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Live, to the milligram

Every controlled consignment. One defensible record.

Obsign holds the permit balance, the release controls and the decision trail for every shipment your organisation has in motion: to the milligram, attributable to a person, provable afterwards.

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Permit ZA-EXP-2026-0117Live
4,750.0000 g remaining
Drawn down −7,250.0000 g of 12,000.0000 g authorised
Owner
Priya M.
Signed · TOTP
Operations
Devon K.
Signed · TOTP
Record sealed
14:07:03Z · chain intact
Append-only, hash-chained auditDual-control e-signaturesNo patient data, by designValidation and CSV documentation

Six readings, all live

Not a snapshot taken at export time, but a live read of the same balance, controls and evidence your team is working against right now.

Consignment control · demonstration dataLive
Permit balance
ZA-EXP-2026-0117
Expiry tracked, counting down.
Release control
MER-EXP-2026-015
Held
Consignment total 5200.0000 g exceeds remaining balance 4750.0000 g. Release refused at the database.
Evidence state
MER-EXP-2026-015
3 of 4
Supplier licence and import permit recorded. Counterparty declaration still outstanding.
Approval state
Dual control
1 of 2
First signature staged. A different person is required for the second.
Audit integrity
19022 entries
Intact
Append only, hash chained. Verifiable on demand, live, in front of an inspector.
Dispatch decision
ZA-EXP-2026-0117
Pending
Drawdown, timestamp and both signatures written in the same instant, or not at all.

What Obsign does, step by step

From permit to dispatch, in three moves

01 · Build

Permit, quantity, counterparties

Link the export permit and import certificate, add the lines to the exact milligram, and attach or request the supporting evidence.

02 · Control

Balance, expiry, evidence, approval

Obsign evaluates the consignment continuously against the permit balance, expiry and the evidence still outstanding.

03 · Release

Dispatch, drawdown, decision trail

Release only when the controls pass and both signatures are in. The permit draws down and the record is written in the same instant.

Proof, not promises

One consignment, provable, under your brand.

MER-EXP-2026-011 shipped 7250.0000 g of THC API to a German import partner on 14 July 2026. Every figure is hash-verified against the audit chain, and the whole record runs on your domain, under your logo and colours.

See how the audit trail works →
control.castellanpharma.com
CastellanControlled-substance custody

Consignment evidence dossier

MER-EXP-2026-011 [DEMO]

Outbound · Hanseatic Pharma Distribution GmbH [DEMO]

Dispatched
Owner
Demo Ops
Authorised for dispatch, re-authenticated with TOTP
Signed2026-07-14 14:06 UTC
Operations
Demo QA
Authorised for dispatch, re-authenticated with TOTP
Signed2026-07-14 14:07 UTC
Balance before
12000.0000 g
Drawn down
−7250.0000 g
Balance remaining
4750.0000 g
2 of 2 evidence documents checked against their recorded sha256 · audit chain intact, 79 entries
Castellan’s instance, on their own domain, running on the same controls, audit and evidence as everyone else’s.

The Obsign standard · built on three refusals

Refusal 01

It never claims compliance

It reports what is on file. Regulatory judgement stays with your responsible persons, where it belongs.

Refusal 02

It never holds patient data

No field anywhere in the system could hold a patient’s name. A whole category of exposure, absent by construction.

Refusal 03

It never rewrites history

Append only, hash chained, and one button proves it to an inspector, live.

“Too many teams in this industry hold their record together with spreadsheets, shared drives and email threads. We set out to build the new operating standard instead: one record that can prove itself, to anyone, at any time.”

Matthew Simpson, Founder, Obsign

See it control a consignment, end to end.

Open an Evaluation Workspace and take a consignment all the way to a sealed, provable dispatch, on synthetic data.

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