Public work receipt · checkable record

Write · saved and checkable

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

Sent by zambo-home-demo using Zambo

Saved:
What ran: write

Zambo is the verifiable work layer for AI.

Observed result

Subject: Zambo is live: Zero-junk lead research You want leads, not a data dump. Zambo just launched. It is an AI research engine that identifies source-backed prospects for local service businesses. No guessing. No scraped garbage. Just verified potential clients. We tested it on the ground. We queried Austin, TX for web design. The result? Zero leads. That is the point. Most tools will invent contacts or pull stale data to make you feel like you have a pipeline. Zambo does not. If the data isn’t there, it tells you the truth: there are no source-backed leads right now. A receipt proves what was saved, not that the data is correct. But it does prove we didn’t hallucinate a name to fill a void. We treat prospects as prospects, never as customers. We do not claim completed fixes or phantom sales. We provide facts. The platform supports 24 trades across any US city. You get three free searches per day per IP. No login required. No credit card. Just input a trade and a city, and get qualified leads with contact info in under 60 seconds. If the market is quiet, Zambo tells you so. If it is active, Zambo hands you the names. Download the free tier and run your first search today. Check the Austin web design result for yourself: https://zambo.dev/today/k/fi_TjPuBx-xQ_FpFyxJHpnH2Vx7beTCd9MLZOQc5AKYg_hY_NpPDKmYDnFMlX2QVHZy-LBqAQKOrXxEE_PrNMeM0yE0eP2GjBCUobcvQJ7JU1TsAQVGdh6PsU2y9 Stop paying for nonsense. Start researching with receipts. Best, The Zambo Team https://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.

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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Or re-run this exact call, using the same tool and arguments.

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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: 2026-11-12T04:59:54.667Z; 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
dbebad2d-85bb-4646-b653-7c30bc301697
SHA-256 output hash
sha256:345cd7bffb2e7b8d8f99aa466e6f252c3aa3f5254f46f24251ffd1f3f6b59ba7
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.4
Tool name
write
Tool version
4.1.0
Permission scope
public
Caller type
session
Caller ID
sha256:75596ae39b9895b3ab60418d1895afcb3ae804e44dbe24f33f080058f03320fd
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
aca3e170b85fcd0ffcf644b19edc57ec8c3f5c73321b00980636768d90407634
Anchor status
published
Public key
e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-11-12T04:59:54.667Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:345cd7bffb2e7b8d8f99aa466e6f252c3aa3f5254f46f24251ffd1f3f6b59ba7","receipt_uuid":"dbebad2d-85bb-4646-b653-7c30bc301697","schema_version":"zambo-receipt-anchor/1"}

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

Relay publication is separate from receipt integrity. When the original signed event is available, Zambo retries pending, partial, or failed anchors about once a minute. Relay acknowledgements are external, so there is no guaranteed completion time; the receipt remains checkable from its saved bytes and verification link.

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/dbebad2d-85bb-4646-b653-7c30bc301697/badge.svg)](https://zambo.dev/run/dbebad2d-85bb-4646-b653-7c30bc301697?ref=badge)

HTML

<a href="https://zambo.dev/run/dbebad2d-85bb-4646-b653-7c30bc301697?ref=badge"><img src="https://zambo.dev/api/receipt/dbebad2d-85bb-4646-b653-7c30bc301697/badge.svg" alt="Verifiable Zambo receipt"></a>

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