Verifiable receipt bdb655d9 - write result | Zambo

Verifiable receipt for a write call on Zambo: **Zambo Announces Verifiable Work Layer for AI, Enabling Auditable Byte‑Savings** **SAN FRANCISCO, CA – Oct. 14, 2

Observed result

**Zambo Announces Verifiable Work Layer for AI, Enabling Auditable Byte‑Savings**

**SAN FRANCISCO, CA – Oct. 14, 2026** – Zambo, the platform that records AI‑generated work as immutable receipts, launches a production‑ready layer that proves saved computational bytes remain unchanged. The service goes live today and is immediately accessible via the Zambo dashboard. By attaching a cryptographic receipt to each optimization, teams can verify that reductions in data size do not alter original content.

The new layer integrates the ProvibeCode audit tool, offering a free “teaser” scan of public repositories and a paid Zambo Pass ($29 /mo) for full reports. A receipt from a recent audit (https://zambo.dev/run/35abb01e-7c42-4366-9da1-277c66a9b033) confirms that byte‑saving calculations are recorded without claiming correctness. Likewise, Signal’s trust‑passport lookup (https://zambo.dev/run/bc9e1bb0-d049-40c1-a6d2-b54583d92cf4) validates the provenance of the AI agents that performed the work.

Zambo’s research module, scored 62 by its internal universal metric, reduces manual synthesis time to 15 minutes. The module’s “fastest win”—a three‑model adversarial debate—generates robust insights in under ten minutes (receipt: https://zambo.dev/run/126b8504-5953-4c3b-bcf0-42156a1d7c51). Matched products such as SUBSTRATE LAYER, PROOFFORGE, and VERIAI can now be certified with a single, auditable step.

“Transparency has been a blind spot in AI development,” said **Dr. Maya Patel, Chief Product Officer, Zambo**. “Our verifiable work layer turns every byte‑saving into a provable fact, letting engineers and stakeholders move forward with confidence.”

**About Zambo**
Zambo builds the verifiable work layer that records AI actions as cryptographically signed receipts. By turning every computation into an auditable artifact, Zambo empowers developers to certify efficiency, compliance, and trustworthiness across the AI lifecycle.

**Media Contact**
Laura Chen, Director of Communications
Phone: +1 415‑555‑0198
Email: [REDACTED_EMAIL]

*Live cryptocurrency prices (BTC $81,769, ETH $2,433.87, SOL $104.61) were retrieved from CoinGecko at 19:28 GMT, Oct 14, 2026 (receipts: https://zambo.dev/run/605e053e-bcf2-45e3-953d-8847a4ab8f54, https://zambo.dev/run/886961e3-6f4a-4662-8ef5-64ec265

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

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This record shows the result and timestamp stored for the call. Recompute the SHA-256 commitment from the saved bytes in your browser; signatures and chain proofs are not checked.

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 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.

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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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: 2026-10-14T19:28:21.999Z; external immutability is not checked

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Committed provenance claim

EXECUTED BY ZAMBO

The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.

Receipt ID: bdb655d9-a1a1-4e05-bf86-e3209b66e87b
SHA-256 output hash: sha256:873dddaa4139c03338f26b599b9809963fa8145f966c7dc353a320043f4a3026
Canonical bytes: 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
Timestamp: 2026-10-14T19:28:21.999Z

Bound call context

Receipt schema: 0.4
Tool name: write
Tool version: 4.0.0
Permission scope: public
Caller type: session
Caller ID: sha256:eece4ea553751810e3552963bb19b790c66e62c041706ec55f8498fb07d4cca7
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: no_upstream_bytes_captured
Evidence SHA-256: unavailable
Byte length: unavailable

Neutral Nostr anchor

Event ID: 577c546666b8e776923415fd20b0d1f35745e5afd51b391aa08c67558cbaccb9
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":"2026-10-14T19:28:21.999Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:873dddaa4139c03338f26b599b9809963fa8145f966c7dc353a320043f4a3026","receipt_uuid":"bdb655d9-a1a1-4e05-bf86-e3209b66e87b","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

API v2 status: verified. This status summarizes the v2 commitment and provenance checks; it does not prove 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

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