Type any sentence. We produce a real Sealed Evidence Record and anchor it to the public Sigstore Rekor transparency log. Click the verify link to confirm it independently — no install, no account, no Verdict tenant required.
This page uses the same canonical-record + Sigstore code path as the productionverdict_create_evidence_recordMCP tool. The signing key tier is the only difference.
Public sandbox: ephemeralECDSA P-256 / SHA-256keypair generated per Vercel serverless instance. Production tier: hardware-backed Ed25519 signing is planned; no production tenant exists yet. The Sealed Evidence Record format and Sigstore Rekor anchoring are designed to stay the same on that tier — only the signer would change. Full disclosure at /security and /dpa.
The browser button above is a thin wrapper around the same MCP tool Claude calls. Install the connector and the next time Claude produces a legal output, it can seal it the same way.
# Remote endpoint (live Sigstore Rekor anchoring on every record)
claude mcp add --transport http verdict https://verdict.systems/api/mcp
# Local stdio (offline-capable; no transparency-log anchoring)
claude mcp add verdict-local -- npx -y @verdict-systems/mcpFull install guide for Claude Code, Claude Cowork, and claude.ai →
