Every showing, locked in gold.

Dual-Chain of Custody

Every disclosure is signed by BOTH your Secure Enclave AND the buyer's.

Neither party can later claim “it wasn't me.” Each tap is a cryptographic witness from two independent hardware roots-of-trust — yours and the buyer's. The plaintiff who wants to deny the disclosure happened has to argue that both Apple chips were compromised at the same moment. They won't.

Living-Tissue Proof

A signature on paper proves a pen moved. An Aura tap proves a person was there.

Aura captures six biological signals simultaneously — heart rhythm, micro-tremor, breathing, thermal contact, vocal harmonics, gait. Only a living human in motion produces all six in coherent phase. A forged signature on a paper disclosure can't pass this test; a video of someone signing can't pass this test; a stand-in who looks like the buyer can't pass this test.

Zero-Knowledge Disclosure

Prove this showing. Reveal nothing about the others.

When opposing counsel demands discovery, you can prove this specific buyer was present at this specific showing on this specific date — without revealing your other buyers, other listings, or pattern of life. Selective cryptographic disclosure, not blanket access to your CRM. What you don't disclose, they can't subpoena.

Hash-Chained Ledger

Editing any showing breaks the chain instantly.

Every showing is hash-linked to the previous one. Tampering with a single byte changes the hash, which breaks the chain, which is mathematically detectable to any reviewer with the public key. Plaintiff's counsel can't argue you back-dated entries. The chain audit takes 3 seconds; the cross-examination it prevents takes hours.

Broker-Verifiable Integrity

Your compliance officer signs off without reading a single showing.

Compass, Sotheby's, Douglas Elliman, and Coldwell Banker compliance teams can verify your seal-stream is intact, sequential, and unedited — without seeing the content. They sign off on chain integrity; you keep the content private. Brokerage liability protection without disclosure liability exposure.

FRE 902(13) + 902(14) Self-Authentication

Admitted into court without your testimony about how it works.

Aura seals satisfy Federal Rule of Evidence 902(13) (“certified records generated by an electronic process”) AND 902(14) (“certified data copied from an electronic device”) — the two evidentiary rules that allow documents into court without foundation testimony from you. Your seal authenticates itself. You don't have to take the stand to explain cryptography.

Physical-Safety Duress

The Beverly Carter problem, solved. The seal is in the cloud before the door closes.

1 in 4 agents has experienced a personally threatening situation at a private showing (NAR, 2024). Aura's duress-coded seal — a long-long-short tap pattern you set during onboarding — silently flags the seal as performed under coercion. The seal still completes, looking normal to the attacker. Your designated trusted contact AND optionally local 911 dispatch receive the buyer's biometric + location seal in real time. The attacker walks away thinking they got clean evidence; they got the opposite.