HashDoc

Tamper-proof auditable evidence for your documents. Choose a file, and HashDoc creates a cryptographic hash on your device, seals that hash on the blockchain, and generates a proof you can store, share, and verify later. Your original files stay on your device and private at all times. Use HashDoc to: Create proof for documents, deeds, audits, code, photos, and video Generate a shareable proof PDF Verify whether a file still matches its original seal Add optional account-backed attribution Keep control of your files with local-first handling and full privacy HashDoc is built for auditors, creators, IP professionals, compliance teams and individuals who need a clear integrity trail for the files that matter most. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula Terms of Use: https://www.proofstack.eu/iosapptermsofuse/ Privacy Policy: https://www.proofstack.eu/iosappprivacypolicy/ Disclaimer: https://www.proofstack.eu/iosappdisclaimer/ FAQ Evidentiary use: https://www.proofstack.eu/iosappfaq/