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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.