// premium service · the verified evidence package
For when a proof has to perform.
Checking a LedgerProof receipt is always free. The Verified Evidence Package is the premium layer for the moment a single proof has to stand up in front of someone who matters — and be read, re-verified, and weighed by a third party who trusts neither of you. It's a paid service: this page explains it, but there's nothing to install or run here.
how it works
Give the engine a content hash and a proof reference. It re-verifies the full integrity chain against the live public chain. If anything is off, it refuses to issue a bundle.
The SHA-256 of your record — the document itself never leaves your hands.
→Resolves the hash to its signed entry in your account's hash chain.
→Recomputes the Merkle root from the entry and its inclusion proof.
→Matches that root to the anchor on the public chain via a public-ledger transaction.
Any mismatch → the engine returns HTTP 422 and issues nothing. A Verified Evidence bundle only exists when the entire chain verifies.
what's in the bundle
The pass/fail outcome of the full content-hash → entry → root → public-chain check.
A plain-English statement of existence and integrity — with its assertion limits stated up front.
The public-chain txid, block, Merkle inclusion proof, and the raw OP_RETURN bytes.
A contemporaneous record of the verification and how the bundle was produced.
Step-by-step instructions to re-check the proof against the open verifier, with no dependency on LedgerProof.
An explicit record that no document content was transmitted or stored — only hashes.
The engine receives a SHA-256 content hash and a proof reference — never the document. Nothing containing your content is transmitted to or stored by the service: document_persisted_server_side: false. The strongest privacy posture is the Enterprise path, where hashing happens in your own stack via the SDK, so the content never even reaches the wire.
premium · two ways to buy
A premium capability — access comes with a paid plan or per bundle. The open verifier stays free and separate; it's checking that's free, packaging that's paid.
Standard
Enterprise
It is also built into the Vault — the Business and Enterprise plans include the Verified Evidence Package, so your system of record and your court-ready exhibit come from one place.
See Vault pricingA LedgerProof proof is tamper-evident, not tamper-proof: it shows whether a record changed, and the assurance deepens with public-ledger confirmations. The Verified Evidence Package proves a record existed and is intact at a point in time — not that its contents are true, accurate, complete, or who authored them. The bundle is built for the admissibility analysis your counsel performs under FRE 902(13)/(14) — jurisdiction-specific, and never a guarantee of admissibility. Free verification with the open verifier always stays free. This is not legal advice.