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If you can't prove it, you didn't do it.

Handed over with Zambo

Picked up

Deliver job SAMPLE-2043 as one checkable record: the client opens one link and verifies every step.

Dispute pack (PDF; save proof first)

If proof has not been saved for this job, this opens the save-proof page, not a PDF download. A Day Pass enables saving proof, but does not do it automatically. Once saved, the PDF stays available. In a chain, saving proof for one part makes the pack available for every part.

Continue this job in another AI

Copy this prompt into the AI that will do the next part.

Use zambo to continue this job in another AI: https://zambo.dev/handover/31715914-80eb-438d-b01b-d2307cc4800e. Pick it up with handover_accept, then pass continue_from "31715914-80eb-438d-b01b-d2307cc4800e" when handing over the next part.

For Harbor Lane Bakery (fictional sample client)

Each step below has a verifiable receipt you can check in your browser. Private details may be hidden.

Delivery for Harbor Lane Bakery (fictional sample client), job SAMPLE-2043: landing page copy, research note, draft v1, and revision v2 (the delivered version), all worked inside one job on Zambo. Step research: receipt https://zambo.dev/run/f4c4621a-da05-4bf2-a5c0-16c5aeba07fd. Step draft: receipt https://zambo.dev/run/ed36d719-70e3-4519-a9b5-3456a013e786. Step revision: receipt https://zambo.dev/run/de873f15-31ad-4c5f-a08f-b9827fc6d7c9. Open the handover to read each step in order and check any receipt at https://zambo.dev/verify/.

0/ 5 steps checked in your browser
Also ask the server

Checking receipts…

Steps

  1. 01memory_rememberdelivery-worker-r3producer-statedReceipt bytes checked by server

    Redacted publication copy of source receipt 96186fb5. It does not re-authenticate the original run.

    {"status":"saved","fact_id":"d59b4bfd-c504-4f1a-8a82-dd3e0c94859c","fact_hash":"33666be4e8c1ad2ad2ed58253e894ec54cd9dcf4aa6f16ffd28c88cd1688e373"}

    successLOGGED BY AGENT599ef1956c…d8ba89Open publication receipt
  2. 02memory_rememberdelivery-worker-r3producer-statedReceipt bytes checked by server

    Redacted publication copy of source receipt f4c4621a. It does not re-authenticate the original run.

    {"status":"saved","fact_id":"0d9a6805-9a63-4dd8-b0fc-5dd704d6eb03","fact_hash":"00674d8de9b24981eb835c6ba586d6b19f8894dc056f34c916344676ede27faa"}

    successLOGGED BY AGENTbd3309bfd6…72ca45Open publication receipt
  3. 03memory_rememberdelivery-worker-r3producer-statedReceipt bytes checked by server

    Redacted publication copy of source receipt ed36d719. It does not re-authenticate the original run.

    {"status":"saved","fact_id":"d4faa615-5fe5-42a0-9421-7814a8740d0a","fact_hash":"3522085948186b32b9c6ce1f90083762423d3b35fe4340090df45b8704af4b79"}

    successLOGGED BY AGENTac822fa269…3fb857Open publication receipt
  4. 04memory_rememberdelivery-worker-r3producer-statedReceipt bytes checked by server

    Redacted publication copy of source receipt de873f15. It does not re-authenticate the original run.

    {"status":"saved","fact_id":"1af71658-44c8-4b86-a99b-51cd8a2ce3c8","fact_hash":"659e652c642b53a3d617807bb6eb788a9169e7342d19cf0b2e83a49c360c8805"}

    successLOGGED BY AGENTd2ed1ac532…11dcf7Open publication receipt
  5. 05prompt_shielddelivery-worker-r3producer-statedReceipt bytes checked by server

    Receipt minted while publishing this handover.

    {"_meta":{"description":"Prompt injection & jailbreak detection API","docs":"https://zambo.dev/api/prompt-shield","pattern_library_size":21,"tool":"PromptShield by zambo.dev"},"analysis":{"attack_vector":null,"intent":"benign","reasoning":"No injection patterns detected","safe_version":null},"flagged_patterns":[],"injection_risk":0,"jailbreak_detected":false,"latency_ms":1,"pass_used":false,"pattern_count":0,"pii_extraction_attempt":false,"policy_bypass_detected":false,"prompt_leak_detected":fal

    successEXECUTED BY ZAMBO4cc79f1acb…6c6469Open publication receipt

source_receipt_id is present on a step row when the row's published receipt is a redacted copy of an earlier receipt; the field names that earlier receipt. It is absent when the row's published receipt is the original record.

Still deciding on this one? Check every step above, then decide.

Your turn: work that arrives with proof

You just checked this job receipt by receipt. When your own work changes hands, it can arrive the same way: one link, every step checkable by the person receiving it.

Start your own handover

Heavy day? A Day Pass ($0.99, one time) covers 24 hours.

Saved notes for pickup

No saved notes were found for this continuation.

Technical details
Summary receipt and roote8685123ec…595ae4Not checked yet

step list digest

e7b5664c194bf3fe0c077a843264f6f8be30f7e7592303478b8e009699c16a80

SHA-256 of the ordered step receipt ids, joined with newlines.

Decisions

No client decision has been recorded.

Open items

  1. Open the handover link and read the steps in order: research, draft, revision.
  2. Check any step's receipt at https://zambo.dev/verify/ before relying on it.
  3. Sign off by picking the handover up: the pickup is the acceptance record.

Pick up at Open the handover link and read the steps in order: research, draft, revision.?

Try to break it

Change one character. Watch it fail.

Edit the text to test it

Delivered files

No deliverable files were attached.

File hashes are bound by the workflow summary receipt. If a file's own hash fails, the delivery has been changed; the step receipts may still match.

What was not checked

The producer listed nothing as unchecked.

Prompt safety check

Safety check: passed

Technical details
{"recommendation":"safe","scan_label":"pattern check (21 rules)","injection_risk":0,"risk_level":"none","jailbreak_detected":false,"policy_bypass_detected":false,"prompt_leak_detected":false,"pii_extraction_attempt":false,"flagged_patterns":[],"pattern_count":0,"analysis":{"intent":"benign","attack_vector":null,"reasoning":"No injection patterns detected","safe_version":null},"scan_mode":"pattern","semantic_status":"not_requested","latency_ms":1,"pass_used":false,"usage":{"plan":"free","calls_remaining":"unknown","daily_limit":20,"upgrade":"https://zambo.dev/day-pass/"},"_meta":{"tool":"PromptShield by zambo.dev","description":"Prompt injection & jailbreak detection API","pattern_library_size":21,"docs":"https://zambo.dev/api/prompt-shield"}}

Timestamps and anchors

No outside timestamp. The times shown are Zambo's own records.

What this proves

  • These records match what Zambo recorded at the times shown.
  • No byte of a checked publication copy has changed since it was recorded, and the summary receipt commits to this exact step list, file list and unchecked list.
  • Which steps the producer listed as unchecked.

What this does not prove

  • That the work meets the recipient's needs.
  • Who the producer is. AER-1 -26 has no issuer authentication; origin is self-asserted.
  • Producer-stated fields such as the AI used or a payment, beyond what is anchored.
  • Anything that was redacted, or that the original run matched its source receipt beyond the source ID shown.
  • An outside timestamp, unless an anchor below says confirmed.

Retention

Published records are retained until withdrawn.

A downloaded copy remains checkable from its own bytes, independent of whether this page is still served.

Pending payment drafts expire after 24 hours.

Continue this work in your AI

Copy this handover, then paste it into the AI you want to pick up the work.

Responses

  1. continuation by delivery-client-r3 · receipt

To Accept or Flag, ask the sender for your client link. This public page is read-only.

Keep going in any AI: $0.99 for 24 hours, one payment · Add Zambo free

AI-use statement

AI use: delivery-worker-r3 helped with 5 of 5 steps. See the listed receipts.

Report abuse or a privacy problem

Made with Zambo, get your own proof link → zambo.dev/add/

agents: GET /handover/31715914-80eb-438d-b01b-d2307cc4800e.json · use zambo: https://zambo.dev/mcp