Record ID

Try a real one: a70465c32cd037d84bf1…

What is this?

Every farm action recorded on Teivaka Agriculture Ecosystem — eggs collected, vaccinations given, feed delivered, sales logged — is written as an immutable, hash-chained audit event. Each event row carries a SHA256 hash that links to its predecessor, forming a tamper-evident chain.

Bank Evidence PDFs generated by Teivaka include a verification URL and QR code. Anyone holding the document can verify, in real time, that the audit chain has not been altered since the document was generated.

How to verify a Teivaka PDF

1. Open the Bank Evidence PDF handed to you by the farmer or lender.
2. Locate the QR code in the document footer.
3. Scan with your phone camera or visit the URL printed beside it.
4. Read the verification page. A green checkmark confirms the audit chain is intact at that hash; a red X means the hash is not in our records.

Try it now — sample verification

This QR code links to a real audit event in our chain. Scan with your phone to see what a successful verification looks like.

Sample audit hash a70465c32cd037d84bf16d7b4bbce384a0b7b29488c0f6f5497701ea7cd4d632

Or visit: /verify/a70465c32cd037d8…

How the chain works

Each audit event in the chain stores:

• The event's own SHA256 hash
• The hash of the previous event in the same farm's chain
• The event type, timestamp, and farm context

To alter any historical event, an attacker would need to recompute every subsequent hash for that farm. The chain is walked end-to-end at every verification request to detect breaks.

The open verification standard

Verification today confirms three things about a record: that it exists in the registry, that its hash chain is intact end-to-end, and when and what type of event it was. The math is SHA256 hash-chaining — any party may re-implement the check.

The full Trust Architecture — trust dimensions (identity, evidence, attestation, behavioural, resilience) and verification levels L0–L5 — is being rolled out progressively. This page will show those scores only when they are computed from real evidence and attestations, never as decoration.

The verification protocol does not require a Teivaka account. The math is open. The data is the farmer's. The protocol remains usable indefinitely, including after any change of control of Teivaka PTE LTD, per Covenant §9.