Verifiable receipt 45dbe8cf - 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 Launch: PromptShield & Capability Search Hi [Name], Zambo is live. We built it to solve two immedia

Observed result

Subject: Zambo Launch: PromptShield & Capability Search Hi [Name], Zambo is live. We built it to solve two immediate problems for AI developers: verifying safety and finding relevant tools without manual research. First is **PromptShield**. It detects injection attacks, jailbreaks, and policy bypasses before they reach your application. Our latest scan identified a critical instruction override attempt in a test payload, flagging a 95% injection risk with specific reasoning on the attack vector. The system blocks malicious prompts and provides a clear risk assessment, keeping your models secure without adding latency. Second is **Capability Search**. It finds public, source-backed tools relevant to your specific AI product. For example, a search for AI research tools returned **Substrate Layer** (a living AI research machine) and **VeriAI** (cryptographic trust scoring). The system distinguishes between executable tools and those requiring manual web action, ensuring you only integrate what actually fits your stack. We’ve attached receipts for both runs. Note that a receipt proves the saved bytes of the scan; it does not guarantee the correctness of the underlying target code, but it validates that our detection and search logic executed as intended. We are not claiming these are your customers. They are prospects identified by our research engine. We haven’t contacted them. We haven’t sent outreach. We just found the relevant tools and secured the input layer. **Next Step:** If you want to see how PromptShield handles your specific traffic, reply with a sample prompt you’re currently filtering manually. We’ll run it through the engine and show you the risk score and flagged patterns. No sales pitch. Just the data. Best, The Zambo Team Zambo.dev

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: 2026-10-16T05:11:41.179Z; external immutability is not checked

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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
45dbe8cf-206d-466e-b98e-827c10936372
SHA-256 output hash
sha256:8ca83160847f6fa4392cb2a5f0ba0930f152b51d88dcf56bff954aceaa5164ed
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:e5a6f618e1ca6a822221a3b3ea4775ec5e8fd3f30083a20214a42ef360e9c4fe
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
7eab70f3c4a95a8685239db7c462a73bf4aa76f4b8872c2990415371f98f4ea6
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":"2026-10-16T05:11:41.179Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:8ca83160847f6fa4392cb2a5f0ba0930f152b51d88dcf56bff954aceaa5164ed","receipt_uuid":"45dbe8cf-206d-466e-b98e-827c10936372","schema_version":"zambo-receipt-anchor/1"}

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

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.

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