DeCerta Blockchain based Docs

Notarize and store documents on-chain. Tamper-proof. Wallet-secured

DeCerta is a decentralized document notarization and storage app. Sign in with a self-custodied wallet, anchor your documents to the SCI Network or BNB Smart Chain, and prove ownership without trusting any single server.

How it works
• Pick a file — PDF, image, document, anything up to 50 MB.
• DeCerta hashes it locally and registers a tamper-evidence anchor on-chain.
• File contents are encrypted and split between on-chain proofs and our backend, keyed by content hash.
• Only your wallet can authorize retrieval. The app reassembles the file, verifies the hash matches what was anchored, and shows it to you.

Features
• Self-custodied wallet — your private key never leaves the device.
• Mnemonic recovery — restore your wallet on any device.
• Two networks — SCI Network for low fees in SCI, BNB Smart Chain for BNB.
• Tamper-evident — every retrieval re-verifies the on-chain hash before opening.
• Read-only access to legacy documents anchored before our V2 contract upgrade.
• Multi-language UI — English, Turkish, Arabic, Spanish, French, Russian, and more.

Use cases
• Diplomas, certificates, contracts, deeds, agreements.
• Anything you want a verifiable timestamp + content proof for.

Privacy
• Wallet-signed authentication for every API call. No passwords on our servers.
• File contents are end-to-end protected — the backend stores only encrypted packets keyed by hash.
• Privacy policy: https://decerta.scimatic.net/privacy-policy

DeCerta is built on Web5 principles: your data, your keys, your control. Public-good infrastructure for a verifiable internet.