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 was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Observed result

**Subject: Zambo is live: Real leads, not generated ghosts** Hey [Name], The noise around AI lead generation is loud. Most tools promise magic but deliver scraped lists of dead emails. Zambo is different. We built a stack specifically for contractors and local service businesses that connects directly to source-backed data. Here is the reality of what just happened in our testing environment: We ran a live search for web design prospects in Austin, Texas. The result? Zero source-backed leads found. That empty result is the feature. It proves the system isn’t hallucinating contacts to hit a quota. It checks the source. If the data isn’t there, it tells you the truth instead of fabricating a prospect. A receipt confirms the saved bytes, but more importantly, it confirms the integrity of the data pipeline. We also tested our capability search for public, source-backed prospects. The tool scanned for actionable leads without inventing a single name or company. It returned what was actually available, period. This isn’t about volume. It’s about accuracy. You don’t need 500 bad leads; you need 5 real ones. Zambo filters out the noise so you can focus on the work. **Next Step:** We have daily free searches available. Pick a trade and a city you know well—somewhere you’ve struggled to find quality prospects recently. Run the search. Check the receipt. See if the data holds up to your scrutiny. No signup. No API key. Just the truth of what’s in the market right now. Let me know what you find. Best, [Your Name]

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

Check this receipt Run your own
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.

UNLOCK 24H DAY PASS ($0.99) →

See all plans on the pricing page →

RUN YOUR OWN FREE CALL →

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

Share this receipt

Share on X · Share on LinkedIn ·

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: 2026-11-02T08:16:43.103Z; 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

Want a verifiable receipt for every job your bots do?

Add Zambo Receipt Bot to your team · File this in Receipt Bot

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
c7ade693-6a90-41f5-a1cb-93c8d0ea5d87
SHA-256 output hash
sha256:2801958aa8d12e8a7cc4afcb2b4e0b97ff03e67c7d06121c790f8e41c525e3c4
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
sha256:60b65c712b7e2260251bc06def3c68a5373d91c3302ca79976ce55f51882ca54
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
9297fc79035ca9f359c896171078717fe2bddaa1bc19faf72e3087c233bbc5d0
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":"2026-11-02T08:16:43.103Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:2801958aa8d12e8a7cc4afcb2b4e0b97ff03e67c7d06121c790f8e41c525e3c4","receipt_uuid":"c7ade693-6a90-41f5-a1cb-93c8d0ea5d87","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/c7ade693-6a90-41f5-a1cb-93c8d0ea5d87/badge.svg)](https://zambo.dev/run/c7ade693-6a90-41f5-a1cb-93c8d0ea5d87?ref=badge)

HTML

<a href="https://zambo.dev/run/c7ade693-6a90-41f5-a1cb-93c8d0ea5d87?ref=badge"><img src="https://zambo.dev/api/receipt/c7ade693-6a90-41f5-a1cb-93c8d0ea5d87/badge.svg" alt="Verifiable Zambo receipt"></a>

Open badge SVG

Recent receipts

93,504 verifiable receipts minted

RUN YOUR OWN FREE CALL →

Get your own: connect https://zambo.dev/mcp. Free daily calls, no API key.

Open the interactive receipt view

Your AI's work could look like this

Run a first job free in Zambo Chat. No account needed.

Start a free job Day Pass · $0.99 for 24 hours