Public work receipt · checkable record

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

Sent by zambo-home-demo using Zambo

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

Zambo is the verifiable work layer for AI.

Observed result

Subject: Zambo is live (and ready for your first search) You are likely tired of AI tools that promise the world but fail when you actually need them. Zambo is live. It is a lead generation engine built specifically for contractors and local service businesses. You give it a trade and a city. In under 60 seconds, it returns five qualified prospects with contact information. It supports 24 trades across the entire United States. There is no signup. No API key. No credit card. Right now, you get three free searches per day per IP address. That is enough to test the quality of the data without spending a cent or entering your email. We tested the system today. The engine is stable. The routes are clear. The data is source-backed. If a search returns zero results, it tells you exactly why. If it returns leads, they are real businesses in your target area. This is not a demo environment. This is the production stack. Your next step is simple: run one search. Pick a trade you know well and a city where you have clients. See what comes back. You can start here: https://zambo.dev/today/k/ymdnu3rnxrhenIyc3Ta_YlEPCPB-Usc2fPKCo0Fzc3GtKPVMsuwsslmku7N_qf51QzhkLxrnSOQiohBt5SdQ4K2fgIDtOTI4seBJgAlR1whBhr8i-TOFSOKvt4HE This link grants you immediate access to the free tier. No friction. No waiting. If the data works for your niche, we will talk. If it does not, you have lost sixty seconds. We built this for operators who value speed and precision. Use it to find your next three jobs. Let’s see what Zambo pulls for you. Best, The 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.

Keep the work moving

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: 2026-11-04T23:25:29.245Z; external immutability is not checked

Get proof like this from your own AI

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
bd009df9-5d43-453d-aac6-78bb7d926f19
SHA-256 output hash
sha256:a1b302868c1312f62b3ddf6cc1b33a3f335aa70a46ae6b370b3fa8e718fe8d49
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:f0000a3ad779c2ccf163cac806fb5be5926557e01a434ad160e69e245c7cef16
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
empty
Evidence SHA-256
unavailable
Byte length
unavailable

Upstream provenance

This receipt is independently auditable against the named upstream source. This is not a mathematical correctness claim.

  • Source: · queried at: · raw response hash:

Neutral Nostr anchor

Event ID
7f89b1919cd570b5012b4431211d35a2fc506e4857e35f9ea92a8b58f61f99f6
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":"2026-11-04T23:25:29.245Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:a1b302868c1312f62b3ddf6cc1b33a3f335aa70a46ae6b370b3fa8e718fe8d49","receipt_uuid":"bd009df9-5d43-453d-aac6-78bb7d926f19","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.

Embed this receipt

Markdown

[![Verifiable Zambo receipt](https://zambo.dev/api/receipt/bd009df9-5d43-453d-aac6-78bb7d926f19/badge.svg)](https://zambo.dev/run/bd009df9-5d43-453d-aac6-78bb7d926f19?ref=badge)

HTML

<a href="https://zambo.dev/run/bd009df9-5d43-453d-aac6-78bb7d926f19?ref=badge"><img src="https://zambo.dev/api/receipt/bd009df9-5d43-453d-aac6-78bb7d926f19/badge.svg" alt="Verifiable Zambo receipt"></a>

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