Now entering Beta — limited waitlist open

Sign, Audit, and Hash Contracts in Seconds.

HashSign combines Gemini AI legal intelligence with a native iOS experience to let you review, sign, and cryptographically verify contracts — without leaving your phone.

Join the Waitlist See How It Works
My Contracts

NDA — Acme Corp

3 pages · PDF

Signed

SHA-256 · bc4f…a91d · Hedera verified

Service Agreement

7 pages · PDF

AI Review

Gemini flagged 2 clauses

"Liability cap is unusually low. Recommend review."

Powered by

Gemini AI
Hedera Network
iOS Native
Apple CryptoKit

Everything You Need

Built for legal professionals who move fast.

AI Legal Audits

Gemini AI reads every clause, flags unusual liability caps, hidden auto-renewal terms, and one-sided indemnity language — before you sign.

  • Plain-language risk summaries
  • Clause-level red flag highlighting
  • NDA, SLA, and contractor templates

Native iOS Ecosystem

Built with SwiftUI from the ground up. Deep integrations with Files, iCloud, Face ID, and Shortcuts mean HashSign fits seamlessly into your daily workflow.

  • Face ID & Touch ID authentication
  • iCloud Drive sync & Siri Shortcuts
  • Apple Pencil signature support

Enterprise Security

Every signed contract is cryptographically hashed with SHA-256 and anchored to the Hedera public ledger — creating a tamper-proof, immutable audit trail.

  • SHA-256 + Hedera HCS anchoring
  • On-device key storage via Secure Enclave
  • Court-admissible timestamp proofs

Simple Workflow

Three steps to a signed,
verified contract.

1

Upload

Import any PDF from Files, Mail, or Safari with one tap.

2

AI Review

Gemini scans every clause and surfaces risks in plain English.

3

Sign & Hash

Sign with Face ID, then anchor the hash to Hedera forever.

Early Access

Be first when
HashSign launches.

Join the waitlist to get priority access, founding member pricing, and a direct line to the team.

No spam, ever. Unsubscribe any time.