Free document verification tools

Interactive utilities for manifest hashing, x402 pricing, Merkle citations, and bundle verification. No API key required — built for developers evaluating verifiable document memory.

• Manifest SHA-256 checker

  Paste manifest.json and compute the canonical SHA-256 hash DocImprint signs.

• x402 cost estimator

  Estimate USDC per-call spend for extract modes before you integrate.

• Merkle proof explainer

  See how chunk-level citation proofs bind answers to document bytes.

• Bundle verifier

  Look up a bundle_id and read public verification status from the API.