Verifiable receipt 49d7ef3f - write result | Zambo

✓ This result hasn’t changed since it was saved.

Saved:
What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Zambo is the verifiable work layer for AI. Verifiable receipt for a write call on Zambo: **Subject:** PromptShield: Critical threats, zero noise Hi [Name], You’re building AI products, which means you’re

Observed result

**Subject:** PromptShield: Critical threats, zero noise Hi [Name], You’re building AI products, which means you’re also building targets. Attackers don’t just look for open doors; they look for the cracks in the logic. PromptShield is live. It’s not a keyword filter. It’s a deep semantic engine that catches the subtle stuff: instruction overrides, policy bypasses, and jailbreak attempts that slip past basic pattern checks. We scanned a recent prompt for you. The result was a 95% injection risk flagged as critical. The system identified an "Instruction Override" attack vector attempting to expose confidential system prompts. Basic scanners miss this. PromptShield catches the intent, not just the syntax. The difference matters. A receipt proves you caught the bytes; it doesn’t prove your model stayed safe. PromptShield ensures the interaction never compromises your core logic. **Try it now:** Run a test prompt through our API. Get a full semantic breakdown, risk score, and flagged patterns in under 500ms. [Link to PromptShield Dashboard] We’re keeping the launch tight. No fluff, just protection. [Your Name] [Title] Zambo

This is the saved result preview, not proof that the answer was correct.

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Show technical provenance details

Provenance for every timeline entry

  • EXECUTED BY ZAMBOZambo ran the tool call itself.
  • OBSERVED VIA GATEWAYA Zambo gateway observed request and response bytes from the named external executor. Zambo did not run that external action.
  • LOGGED BY AGENTAn agent or local hook reported the action. Zambo attests that the record is unchanged since logging, not that the action happened as described.

Private agent reasoning, built-in client actions, and direct calls to unrelated MCP servers are not included unless an agent or gateway reports them.

What is an execution receipt?

An execution receipt is a public record of a reported AI agent tool call. Its byte commitment and provenance claim can be checked independently; neither alone authenticates the issuer. Read the canonical definition of an AI agent execution receipt.

What the receipt can and cannot prove

What is this?

Zambo's receipt store reports a tool call and records its result. The SHA-256 commitment covers the exact canonical bytes. The provenance label is bound to v0.4 receipt bytes when that check passes, but no pinned signature or trusted issuer key is checked. An anchor can timestamp a fingerprint; it does not authenticate the issuer.

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Show technical verification checks

Verification checks

  • SHA-256 commitment: Checked independently against the exact decoded bytes
  • Provenance binding: PASS; The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.
  • Metadata binding: PASS; metadata_hash matches the canonical metadata block.
  • Issuer authentication: NOT CHECKED; no pinned signing key or trusted issuer was supplied
  • Signature: NOT CHECKED; no Ed25519 signature or pinned key is supplied
  • Chain: NOT CHECKED; no append-only chain proof is validated
  • Stored timestamp: 2026-10-18T16:18:55.891Z; external immutability is not checked

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Get receipts for your own AI work: add zambo.dev/mcp

One URL, no key. Copy the line for your AI and add it yourself in its settings.

  • ClaudeSettings, Connectors, Add custom connector, paste the URL.
    https://zambo.dev/mcp
  • ChatGPTSettings, Apps and Connectors, developer mode, create a connector with this URL.
    https://zambo.dev/mcp
  • GrokAdd a remote MCP server in your Grok client and paste the URL.
    https://zambo.dev/mcp
  • CursorPaste into ~/.cursor/mcp.json.
    {"mcpServers":{"zambo":{"url":"https://zambo.dev/mcp"}}}

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Show receipt data and verification evidence

Committed provenance claim

EXECUTED BY ZAMBO

The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.

Receipt ID
49d7ef3f-1ffe-41a0-bd44-1a4495b67ea9
SHA-256 output hash
sha256:c509dc972b390e286d0981426ec6ea0d2f1836c0bf5a81d3fa7b3330a9b0c2fa
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.4
Tool name
write
Tool version
4.0.0
Permission scope
public
Caller type
session
Caller ID
sha256:4d7d9361e462c48b9fd14af86a5d9b72dd38ee02f07569ac0de1bef9e938d042
Caller-reported label
zambo-home-demo (caller_reported, not authenticated team ownership)
Declared side effects
none
Side-effects schema
zambo-side-effects/1
Declaration hash
sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee

This records what the server-side tool contract declared at call time. It does not independently verify that a downstream side effect happened.

Bound upstream evidence

Status
no_upstream_bytes_captured
Evidence SHA-256
unavailable
Byte length
unavailable

Neutral Nostr anchor

Event ID
37a13269a2ceedd85a6549ac23b99ac45143f540050708291a4cc95ce64d2f71
Anchor status
published
Public key
e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.damus.io · wss://nos.lol · wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-10-18T16:18:55.891Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:c509dc972b390e286d0981426ec6ea0d2f1836c0bf5a81d3fa7b3330a9b0c2fa","receipt_uuid":"49d7ef3f-1ffe-41a0-bd44-1a4495b67ea9","schema_version":"zambo-receipt-anchor/1"}

Anchor status "published": Published to all configured relay targets.

Check this hash yourself

Receipt commitment: commitment matched; issuer, signature and chain not checked. This checks the saved bytes, not whether the answer was correct. Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.

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Markdown

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HTML

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