Verifiable receipt 3bfea511 - leadsignal result | Zambo

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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-467783558","title":"Toilet won't flush properly unless I disconnect the bathroom sink

Observed result

leads 1 / id: reddit-467783558 leads 1 / title: Toilet won't flush properly unless I disconnect the bathroom sink drain. Venting issue? Where to start? leads 1 / summary: Hoping someone can help me figure out what's going on with my toilet and where to start troubleshooting before I spend a fortune. 1950s house, 2 bed/1 bath, on septic. Original cast iron sewer main and vent stack. Both look to be in decent shape from the outside, no idea about the inside. Bathroom was remodeled a couple years ago and the individual plumbing lines were replaced. Everything worked fine for well over a year. Then the toilet started having trouble flushing. Water rises really high i 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: 14h ago leads 1 / minutesAgo: 856 leads 1 / score: 80 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/Plumbing/comments/1xa4lvq/toilet_wont_flush_properly_unless_i_disconnect/ leads 1 / jobDetails: ⚡ Today leads 1 / outreachMessage: Hi — I saw your post, “Toilet won't flush properly unless I disconnect the bathroom sink drain. Venting issue? Where to start?”. If this is still active, please share the best way to discuss the project and any timing or scope details. leads 2 / id: reddit-443012649 leads 2 / title: Weird and challenging diagnosis of drain problem leads 2 / summary: (FWIW I hope my description below helps. I'm just a DIYer, but the plumbers I've had out to look at this seem stumped.) I'm trying to play Sherlock on some drainage issues. We built our home in 2020. We have a basement level, our yard slopes to the back so it's a walk out. Theres a staircase outside with a drain in the stairwell that goes below the basement level to a sub garage space. Recently during heavy rain and hail storm the stairwell received water flowing down the stairs, despite being u leads 2 / platform: Reddit leads 2 / location: Austin, Texas leads 2 / actual city: Austin, Texas leads 2 / requested city: Austin, Texas leads 2 / location match: true leads 2 / postedAt: 1d ago leads 2 / minutesAgo: 2009 leads 2 / score: 76 leads 2 / urgency: high leads 2 / contactInfo: Reply via the linked Reddit post | 💡 DM with your local rate and availability — first to respond wins leads 2 / sourceUrl: https://www.reddit.com/r/Plumbing/comments/1x9h58q/weird_and_challenging_diagnosis_of_drain_problem/ leads 2 / outreachMessage: Hi — I saw your post, “Weird and challenging diagnosis of drain problem”. If this is still active, please share the best way to discuss the project and any timing or scope details. count: 2 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

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

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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.

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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: 2026-10-20T08:37:09.446Z; external immutability is not checked

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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
3bfea511-1706-415e-b984-45530dcdb689
SHA-256 output hash
sha256:73134535980648cfcf037ffd2a7fda8fd3086e6032e55e3a7bc36ab8c4f837aa
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
sha256:7ef79f60762aa3dd1b2a19c6298a6e7d92a80ad21f97827c6897d2b39f39846f
Caller-reported label
rambo-fixverify (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
sha256:116975d695856fc46cdf68099f2cc1957cf178d7f6612369955ffbc13ea082a6
Byte length
2831

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID
73fc923829e2d76d810f206edb0fc0840c08ca5cf0eef860a0f662f69ac7191a
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":"2026-10-20T08:37:09.446Z","evidence_byte_length":2831,"evidence_sha256":"sha256:116975d695856fc46cdf68099f2cc1957cf178d7f6612369955ffbc13ea082a6","evidence_url":"https://zambo.dev/api/evidence/116975d695856fc46cdf68099f2cc1957cf178d7f6612369955ffbc13ea082a6","output_sha256":"sha256:73134535980648cfcf037ffd2a7fda8fd3086e6032e55e3a7bc36ab8c4f837aa","receipt_uuid":"3bfea511-1706-415e-b984-45530dcdb689","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.

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HTML

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