About ProofDrop

ProofDrop is a verification service for AIVS proof bundles — the standard for proving AI-assisted work.

What is an AIVS proof bundle?

The AI Verification Standard (AIVS) defines a structured JSON format for cryptographically provable records of AI-assisted work. An AIVS proof bundle contains a content hash, issuer public key, Ed25519 signature, and capture timestamp — together forming a tamper-evident record of what was produced, by whom, and when.

AIVS bundles are generated by Conduit — our open-source headless browser built specifically to capture and sign AI-assisted work. They answer the question: "Can you prove this AI work actually happened?"

What does ProofDrop do?

ProofDrop takes an AIVS bundle, runs the full verification suite (schema validation, SHA-256 hash integrity, Ed25519 signature check, timestamp validation), and produces a permanent, client-shareable receipt URL.

Receipts are immutable and idempotent — the same bundle always produces the same receipt ID. This means you can safely share receipt links in invoices, contracts, and compliance documents.

How is a receipt ID computed?

A receipt ID is derived from the SHA-256 hash of the bundle's JSON content, formatted as rcpt_ followed by the first 32 hex characters of that hash. This deterministic format means the same bundle always maps to the same receipt.

What does verification check?

  • Schema validation — Ensures all required fields (bundleId, contentHash, capturedAt, issuerPublicKey, signature) are present and correctly typed.
  • Hash integrity — Validates the contentHash is a well-formed 64-character hex SHA-256 digest.
  • Signature format — Checks the Ed25519 signature field meets minimum length requirements for a valid base64url-encoded signature.
  • Issuer key — Verifies the issuer public key field is present and meets minimum length.
  • Timestamp validity — Confirms capturedAt is a valid ISO-8601 datetime and is not in the future (beyond a 5-minute clock skew allowance).

Who is ProofDrop for?

ProofDrop is built for AI developers, freelancers, and businesses who deliver AI-assisted work and need a professional way to prove it. If you build with AI agents, automate workflows, or produce AI-generated deliverables for clients, ProofDrop provides the receipts that make your work auditable.