Blockchain Verification

How Verification Works

Vilulia anchors finalized settlements, arbitration awards, completion certificates, and case documents to the Polygon blockchain. The process creates a tamper-evident record: a cryptographic hash of the document is computed and written to the blockchain, proving that the document existed in its exact form at a specific point in time. Blockchain verification is included in Professional and Enterprise plans.

What you'll learn

How Vilulia computes and stores a document's hash
What the Polygon blockchain provides in this context
Where the transaction hash is stored
What verification proves and what it does not prove

Step 1: Hashing the document

When a document is anchored, Vilulia computes a SHA-256 hash of the document content. SHA-256 is a one-way cryptographic function: the same document always produces the same hash, and any change — even a single character — produces a completely different hash. The hash acts as a unique fingerprint of the document at the moment of anchoring.

Step 2: Writing to the blockchain

The hash is submitted as a transaction to the Polygon blockchain. Polygon is a proof-of-stake blockchain network that provides fast, low-cost transaction confirmation. Once the transaction is confirmed, it becomes part of the permanent, immutable blockchain record — it cannot be altered or deleted.

Step 3: Storing the transaction hash

Vilulia stores the blockchain transaction hash (tx_hash) against the case record in the platform. This is the reference used to verify the document: any authorized user can look up the transaction on the blockchain using the stored hash and confirm that the document's SHA-256 fingerprint matches what was recorded at the time of signing.

What verification proves

Blockchain verification proves that a specific document existed in its exact form at the time the transaction was confirmed on the blockchain. It does not authenticate the identities of the parties who signed the document — that is the role of the DocuSign e-signature process. Together, DocuSign e-signature and blockchain verification provide both identity verification and tamper-evidence.

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