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 launch: Your first 5 leads in 60 seconds To the Austin web design team, Zambo is live. Stop guessing who to call. We built Zambo to solve one problem: finding qualified leads without the manual scrubbing. You input your trade and city. Within 60 seconds, you get five source-backed prospects with direct contact info. No guesswork. No cold list buying. Just verified data from public sources. We ran a live test today. We searched for "web design" in Austin, Texas. The system returned zero results. We are not fabricating data to make the tool look successful. That empty result is the proof. If the source doesn’t have a match, Zambo tells you the truth. It does not hallucinate customers. It does not invent sales. It provides accurate, receipt-backed lead generation. This is critical for your launch. You cannot sell to leads that don’t exist. Zambo ensures your outreach is grounded in reality. You get three free searches per day, per IP, with no authentication required. This allows you to validate your market fit before spending a dollar on paid tools. The tool covers 24 trades and any US city. We are not promising we will find five leads every time. We are promising that when we find them, they are real, verifiable, and ready for your pipeline. **Next Step:** Run your own test. Pick your primary trade and a target city. Use the free tier. Check the results. If you find five leads, you have your immediate pipeline. If you find zero, you have saved time and avoided wasted outreach. Here is the link to your live test environment: [Insert Zambo URL] We are launching with transparency. We show you the receipts. We show you the limits. We show you the data. If the tool works for your specific niche, you will see it in the first minute. If it doesn’t, we want to know why so we can fix it. Let’s build your pipeline on facts, not hopes. Best, [Your Name] Zambo

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: 2026-11-05T01:35:28.778Z; 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
aa55faf4-c073-4004-b40b-d128391c3601
SHA-256 output hash
sha256:bb04f4ee7a256f72b3936fbd1e290b3d299ae8abbd7493d7efdcc3d6a5adfe20
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
sha256:31ecce07a90c463dbae39a97aac534c9bde4b4859a9f2c6c44e6ce7cc9f4e6ad
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
704fb5e458b76fb588a6ad2275f0bf0a74f032d833699f5563e6782d5e07a803
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":"2026-11-05T01:35:28.778Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:bb04f4ee7a256f72b3936fbd1e290b3d299ae8abbd7493d7efdcc3d6a5adfe20","receipt_uuid":"aa55faf4-c073-4004-b40b-d128391c3601","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

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

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HTML

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