Shipment Verification

Was this shipment
kept safe?

Enter a shipment ID or transaction reference below. April Gate returns a simple, legally defensible answer — verified by mathematics, recorded permanently on blockchain.

// Enter Shipment ID or Blockchain Transaction Hash
No account required. Results are public and independently verifiable on the Solana blockchain.
Shipment Conditions Verified
All sensors in agreement · No tampering detected
// Shipment ID
// Verification Result
VALID
// Temperature Range
// Specification
2°C – 8°C
// Sensors Agreed
// Tamper Events
// Proof Verified
// Verified At
// BLOCKCHAIN RECORD
VIEW ON SOLANA →
In plain English: The sensors aboard this shipment independently measured and agreed on temperature conditions throughout transit. A mathematical certificate of that agreement was recorded permanently on the Solana blockchain. This certificate cannot be altered, backdated, or disputed — it is as permanent as any record can be.

// How it works

A simple answer backed by
mathematical certainty

April Gate is designed so that insurers, lawyers, compliance officers, and judges can trust the result — without understanding the underlying technology. Here is what happens, in plain terms.

1
Each sensor carries a unique, unforgeable identity

Every April Gate sensor contains a tamper-resistant chip — similar to the chip inside a credit card or a passport — that holds a private cryptographic key. That key is burned into the hardware at manufacture and cannot be extracted, copied, or transferred. Every temperature reading the sensor produces is signed by that key.

In court terms: the sensor cannot lie about its identity, the same way a passport chip cannot be cloned.
2
Multiple independent sensors must agree

A shipment carries several sensors placed independently throughout the container. They continuously cross-check each other's readings. If one sensor is tampered with, removed, or replaced — the others detect the disagreement. A single compromised sensor cannot corrupt the record.

In court terms: independent witnesses who cannot coordinate a false story.
3
A mathematical certificate is generated — not a log

April Gate does not store thousands of individual temperature readings in a database that someone could alter. Instead, the sensors generate a single mathematical certificate — a zero-knowledge proof — that attests to what happened during the journey. This certificate proves the conditions were met without revealing any confidential operational details.

In court terms: a certified summary that cannot be fabricated after the fact.
4
The certificate is recorded permanently on blockchain

The mathematical certificate is written to the Solana blockchain — a global, distributed ledger that no single person, company, or government controls. Once written, it cannot be altered, deleted, or backdated. April Gate itself cannot change it. The shipment company cannot change it. It is as permanent as any record can be.

In court terms: a notarized document held simultaneously by thousands of independent parties worldwide.
5
Anyone can verify the result — instantly, for free

Enter the shipment ID above. April Gate checks the blockchain record and returns a simple answer: valid or not valid. No account required. No fee. No interpretation needed. The same result is returned to the insurer, the pharma company, the regulator, and the judge — because it comes from the same immutable source.

In court terms: public record that all parties can independently confirm.

// Common questions

For those who prefer analogies

// For insurers
Like Progressive Snapshot — but for cargo

Progressive gives drivers a device that records driving behavior and rewards safe drivers with lower premiums. April Gate does the same for pharmaceutical shipments — sensors record conditions throughout transit, and that verified record is the basis for your coverage decision. No dispute. No ambiguity.

// For lawyers
Like a wax seal — that mathematics guarantees

A wax seal on a letter proves it was not opened in transit — you do not need to understand chemistry to trust the seal. April Gate's mathematical certificate proves conditions were maintained — you do not need to understand cryptography to present it as evidence. The seal is either intact or it is not.

// For compliance officers
Like a 21 CFR Part 11 audit trail — that no one controls

FDA requires electronic records to be accurate, reliable, and protected from alteration. Traditional systems satisfy this with access controls and audit logs — which a court can still challenge. April Gate's record is protected by mathematics and distributed globally. There is no administrator who could alter it even if compelled to.

// For judges and juries
Like DNA evidence — the science speaks for itself

Juries do not need to understand genetics to accept DNA evidence. They accept the expert's testimony that the method is sound. April Gate's mathematical certificates follow the same path — an expert witness explains that the proof is valid, and the result stands on its own merits. The technology is peer-reviewed and independently verifiable.

Can April Gate alter the records after the fact?
No. Once a proof is written to the Solana blockchain, it is outside April Gate's control entirely. The blockchain is maintained by thousands of independent computers worldwide. No single party — including April Gate — can alter, delete, or add to an existing record. This is the fundamental property that makes the system trustworthy.
What if a sensor fails or connectivity is lost during transit?
Connectivity gaps are expected during ocean freight and are recorded as expected gaps — distinguishable from suspicious gaps caused by deliberate interference. Sensors buffer readings locally and submit them when connectivity returns. A tamper attempt that disconnects a sensor looks very different from an ocean transit dead zone, and both are recorded immutably on-chain.
Is this admissible as evidence in court?
Blockchain evidence is already accepted in multiple jurisdictions including the United States, China, and across the European Union. April Gate's records are designed to meet the standards of electronic evidence — with an unbroken chain of custody from physical sensor to blockchain record. As with any expert evidence, an expert witness would present the methodology to the court.
Does April Gate have access to the raw temperature data?
Raw temperature data is stored off-chain, encrypted with the customer's own encryption key. April Gate does not hold the decryption key and cannot access the raw data. The on-chain record contains only the mathematical proof — which confirms conditions were met without revealing proprietary details such as exact readings, timing, or routing information.
What does "zero-knowledge proof" mean in plain terms?
A zero-knowledge proof is a mathematical method that lets one party prove a statement is true without revealing any additional information. In April Gate's context: the sensors prove that temperature stayed within the required range throughout the journey — without revealing the exact temperature at any given moment, where the shipment was, or when specific readings occurred. The insurer gets confirmation. The shipper's operational data stays private.
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