DEMO #2

Multichain Documents Approval System

Anchor document hashes across Ethereum, Solana and Cardano. Verify integrity and record user approvals.

1) Anchor a document

Upload a file (PDF/JSON/TXT), compute its SHA-256 hash locally in the browser, then anchor the hash on-chain. (Admin only)

Anchor Document

2) Verify document anchor status

Recompute the hash from the uploaded document and compare it with anchored hashes retrieved from each chain.

Verify Document

3) Approve a document

Users record an acknowledgment on a selected chain. One approval is enough.

Ethereum
Use Ethereum
Sign with a EVM Wallet.
Open →
Solana
Use Solana
Sign with Phantom.
Open →
Polygon
Use Polygon
Sign with a EVM Wallet.
Open →