Verifiable receipt 5605d372 - leadsignal result | Zambo

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

Saved:
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 leadsignal call on Zambo: {"leads":[{"id":"reddit-2126626349","title":"Should I use a plumber to install dishwasher or better to use an

Observed result

leads 1 / id: reddit-2126626349 leads 1 / title: Should I use a plumber to install dishwasher or better to use an appliance installer? leads 1 / summary: Getting a new dishwasher and trying to figure out who should handle the installation. The existing plumbing is pretty old and the shutoff valve looks like it could use replacing. Im comparing my options like should I do roto rooter or appliance installation services. I'm looking at local plumbers too. The store installation looks okay but Im worried they might refuse the job if anything needs modifying under the sink. Trying to compare labor charges and what is included with the hookup. any advi leads 1 / platform: Reddit leads 1 / location: Austin, Texas leads 1 / actual city: Austin, Texas leads 1 / requested city: Austin, Texas leads 1 / location match: true leads 1 / postedAt: 6d ago leads 1 / minutesAgo: 9494 leads 1 / score: 74 leads 1 / urgency: high leads 1 / contactInfo: Reply via the linked Reddit post | 💡 DM with your local rate and availability — first to respond wins leads 1 / sourceUrl: https://www.reddit.com/r/HomeImprovement/comments/1x5kvre/should_i_use_a_plumber_to_install_dishwasher_or/ leads 1 / outreachMessage: Hi — I saw your post, “Should I use a plumber to install dishwasher or better to use an appliance installer?”. If this is still active, please share the best way to discuss the project and any timing or scope details. count: 1 trade: Plumbing city: Austin, Texas requested city: Austin, Texas quota tier: free_3 free limit: 3 leadsignal quota / tier: free leadsignal quota / limit: 3 leadsignal quota / remaining: 0 leadsignal quota / resets at: 2026-10-21T00:00:00.000Z dashboard: https://zambo.dev/leads/ powered by: zambo.dev/leads

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: 2026-10-20T21:40:16.237Z; external immutability is not checked

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  • CursorPaste into ~/.cursor/mcp.json.
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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
5605d372-6e35-4762-8c72-c514e62c1496
SHA-256 output hash
sha256:840c189efa7b7e9bab940811d3d1070f2213bffd511f93ad29cc4916673e8574
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.4
Tool name
leadsignal
Tool version
4.0.0
Permission scope
public
Caller type
session
Caller ID
sha256:0d2228b95399314c3b2348d811660ece4c710f768169fb0022698f983f382878
Caller-reported label
rambo-verify (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
captured
Evidence SHA-256
sha256:a5bbd8671dfa4fcb6654720a17e754ded5a9ad99ccb4f7c02aa47165635eeb0e
Byte length
1623

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID
57eee46106b47533b7005e02279f3c46877fcc3e16d0d1bc9762a0b3d6128211
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":"2026-10-20T21:40:16.237Z","evidence_byte_length":1623,"evidence_sha256":"sha256:a5bbd8671dfa4fcb6654720a17e754ded5a9ad99ccb4f7c02aa47165635eeb0e","evidence_url":"https://zambo.dev/api/evidence/a5bbd8671dfa4fcb6654720a17e754ded5a9ad99ccb4f7c02aa47165635eeb0e","output_sha256":"sha256:840c189efa7b7e9bab940811d3d1070f2213bffd511f93ad29cc4916673e8574","receipt_uuid":"5605d372-6e35-4762-8c72-c514e62c1496","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

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HTML

<a href="https://zambo.dev/run/5605d372-6e35-4762-8c72-c514e62c1496?ref=badge"><img src="https://zambo.dev/api/receipt/5605d372-6e35-4762-8c72-c514e62c1496/badge.svg" alt="Verifiable Zambo receipt"></a>

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