Verifiable receipt db4a2344 - write result | Zambo

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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: Zambo’s PromptShield is live (and it blocked a critical jailbreak today) Hi [Name], I’m reaching out beca

Observed result

Subject: Zambo’s PromptShield is live (and it blocked a critical jailbreak today) Hi [Name], I’m reaching out because your team is actively dealing with AI security risks, and the latest scan from our PromptShield API just caught a critical threat in real-time. Here is what happened: A test input triggered a high-confidence jailbreak attempt. The system immediately flagged "Instruction Override" with a 95% risk score. It identified the attack vector, blocked the malicious payload, and provided a safe alternative response—all without exposing internal system instructions or credentials. This isn’t theoretical. The receipt for this specific detection is available here: https://zambo.dev/run/553be1f0-d425-4c54-b2c3-302a84b796db Note: This receipt confirms the system logged the unchanged saved bytes of the interaction. It proves the detection occurred and the log is immutable. It does not verify the correctness of the underlying code logic, only that the security layer functioned as designed. We have also integrated this with our research tools. For example, when we ran a search for prospective AI tool users, the system correctly identified public, source-backed prospects while strictly adhering to read-only research protocols. No outreach was sent. No data was leaked. Just clean, verifiable execution. You don’t need to trust our word on how well this works. You can see the exact logs, the risk scores, and the blocked patterns in the receipt above. If you want to see how PromptShield handles your specific use cases, reply with "Demo" and I will set up a time to walk you through the live detection logs. Best, [Your Name] Zambo Team

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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This receipt records a completed tool call. When the free allowance is not enough, choose the access path that fits the job.

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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: 2026-10-17T02:28:22.884Z; external immutability is not checked

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Add to my AI ·

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"}}}

Nothing is installed automatically. Full setup guides

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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
db4a2344-32b0-46e3-92c9-99972005dd1d
SHA-256 output hash
sha256:5c677823518712002fa8dd183aa8c6d438c47eea190c96777a0d0872e5c84a14
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:e312b3dfcca1f7d3fa28b4b572d19f80707e8d3a18bbd269437af60916239d69
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
ba5a0d0651f81df0b1b97ffec1cac3e61e7e7e00ccc34b153ea526daae225904
Anchor status
partial
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":"2026-10-17T02:28:22.884Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:5c677823518712002fa8dd183aa8c6d438c47eea190c96777a0d0872e5c84a14","receipt_uuid":"db4a2344-32b0-46e3-92c9-99972005dd1d","schema_version":"zambo-receipt-anchor/1"}

Anchor status "partial": Published to some configured relay targets; publication was not confirmed by every configured relay.

Check this hash yourself

API v2 status: verified. This status summarizes the v2 commitment and provenance checks; it does not prove 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.

Embed this receipt

Markdown

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HTML

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