Verifiable receipt efd2f511 - write result | Zambo

Verifiable receipt for a write call on Zambo: **Zambo Launches Verifiable Work Layer for AI, Delivering Immutable Byte‑Saving Receipts** *NEW YORK, Oct 14 2026*

Observed result

**Zambo Launches Verifiable Work Layer for AI, Delivering Immutable Byte‑Saving Receipts**  

*NEW YORK, Oct 14 2026* – Zambo, the emerging platform that records AI‑generated work as tamper‑proof evidence, today released its first production feature: a receipt that proves the number of bytes saved by an AI task remains unchanged from execution to verification. The service goes live worldwide, with real‑time crypto market data displayed alongside each receipt to illustrate the economic context of AI‑driven efficiency.

The rollout coincides with live price feeds from CoinGecko for Bitcoin (BTC $81,758 ▼ 1.72 % / $1.64 T market cap), Ethereum (ETH $2,432.63 ▼ 3.04 % / $297.15 B) and Solana (SOL $104.54 ▼ 3.00 % / $61.61 B), all captured at 19:29:45 GMT on Oct 14. Each receipt, such as the Bitcoin‑linked proof <https://zambo.dev/run/8f021309-f75c-4059-ab72-43a58ea17246>, shows the exact byte count before and after optimization, confirming that the reduction is genuine and immutable, though it does not assert the correctness of the underlying AI output.

Zambo’s verification engine integrates existing tools like ProvibeCode’s audit teaser and Signal’s trust passport, delivering a unified “research‑to‑launch” workflow. Users can trigger a read‑only audit of public repositories, receive a Provibe Score, and instantly generate a certified receipt that can be published or shared with stakeholders. The platform’s universal score of 62 (research branch, medium impact) indicates a rapid 15‑minute implementation path for teams seeking transparent AI accountability.

“Providing an auditable, byte‑level receipt eliminates the guesswork around AI efficiency claims,” said **Aisha Patel, Chief Product Officer of Zambo**. “Our users now have a single source of truth that bridges technical validation and business impact.”

**About Zambo**  
Zambo builds the verifiable work layer for artificial intelligence, enabling developers, enterprises, and researchers to certify AI‑generated outputs with immutable proofs. By anchoring byte‑level metrics to blockchain‑grade receipts, Zambo drives trust, reproducibility, and measurable ROI across the AI ecosystem.

**Media Contact**  
Jordan Lee, Director of Communications  
email: [REDACTED_EMAIL]  
phone: +1 212‑555‑0198

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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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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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: 2026-10-14T19:29:52.735Z; 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: efd2f511-d741-4ed6-a5e5-b55f4a6665b2
SHA-256 output hash: sha256:a067ea611598f39eed2c6f35502f45fe6e9421015fde4de5aac3be75e62a5dd9
Canonical bytes: eyJjYWxsZXIiOnsiaWQiOiJzaGEyNTY6YjUyZGYwOGUzNjM3YTMwOGI3YjQ1ZDNkNzZlY2MyNThlZDcyYzY3ZDJhMDIzYWJhZmNjMTBiNjQ4NDgwZDIwYSIsImxhYmVsIjoiemFtYm8taG9tZS1kZW1vIiwibGFiZWxfc291cmNlIjoiY2FsbGVyX3JlcG9ydGVkIiwidHlwZSI6InNlc3Npb24ifSwiaXNzdWVyX2NsYWltcyI6eyJwcm92ZW5hbmNlX2NsYXNzIjoiRVhFQ1VURUQgQlkgWkFNQk8ifSwib3V0cHV0Ijp7InRleHQiOiIqKlphbWJvIExhdW5jaGVzIFZlcmlmaWFibGUgV29yayBMYXllciBmb3IgQUksIERlbGl2ZXJpbmcgSW1tdXRhYmxlIEJ5dGXigJFTYXZpbmcgUmVjZWlwdHMqKiAgXG5cbipORVcgWU9SSyzigK9PY3TigK8xNOKArzIwMjYqIOKAkyBaYW1ibywgdGhlIGVtZXJnaW5nIHBsYXRmb3JtIHRoYXQgcmVjb3JkcyBBSeKAkWdlbmVyYXRlZCB3b3JrIGFzIHRhbXBlcuKAkXByb29mIGV2aWRlbmNlLCB0b2RheSByZWxlYXNlZCBpdHMgZmlyc3QgcHJvZHVjdGlvbiBmZWF0dXJlOiBhIHJlY2VpcHQgdGhhdCBwcm92ZXMgdGhlIG51bWJlciBvZiBieXRlcyBzYXZlZCBieSBhbiBBSSB0YXNrIHJlbWFpbnMgdW5jaGFuZ2VkIGZyb20gZXhlY3V0aW9uIHRvIHZlcmlmaWNhdGlvbi4gVGhlIHNlcnZpY2UgZ29lcyBsaXZlIHdvcmxkd2lkZSwgd2l0aCByZWFs4oCRdGltZSBjcnlwdG8gbWFya2V0IGRhdGEgZGlzcGxheWVkIGFsb25nc2lkZSBlYWNoIHJlY2VpcHQgdG8gaWxsdXN0cmF0ZSB0aGUgZWNvbm9taWMgY29udGV4dCBvZiBBSeKAkWRyaXZlbiBlZmZpY2llbmN5LlxuXG5UaGUgcm9sbG91dCBjb2luY2lkZXMgd2l0aCBsaXZlIHByaWNlIGZlZWRzIGZyb20gQ29pbkdlY2tvIGZvciBCaXRjb2luIChCVEPigK8kODEsNzU44oCv4pa84oCvMS43MuKAryXigK8v4oCvJDEuNjTigK9UIG1hcmtldCBjYXApLCBFdGhlcmV1bSAoRVRI4oCvJDIsNDMyLjYz4oCv4pa84oCvMy4wNOKAryXigK8v4oCvJDI5Ny4xNeKAr0IpIGFuZCBTb2xhbmEgKFNPTOKAryQxMDQuNTTigK/ilrzigK8zLjAw4oCvJeKAry/igK8kNjEuNjHigK9CKSwgYWxsIGNhcHR1cmVkIGF0IDE5OjI5OjQ14oCvR01UIG9uIE9jdOKArzE0LiBFYWNoIHJlY2VpcHQsIHN1Y2ggYXMgdGhlIEJpdGNvaW7igJFsaW5rZWQgcHJvb2bigK88aHR0cHM6Ly96YW1iby5kZXYvcnVuLzhmMDIxMzA5LWY3NWMtNDA1OS1hYjcyLTQzYTU4ZWExNzI0Nj4sIHNob3dzIHRoZSBleGFjdCBieXRlIGNvdW50IGJlZm9yZSBhbmQgYWZ0ZXIgb3B0aW1pemF0aW9uLCBjb25maXJtaW5nIHRoYXQgdGhlIHJlZHVjdGlvbiBpcyBnZW51aW5lIGFuZCBpbW11dGFibGUsIHRob3VnaCBpdCBkb2VzIG5vdCBhc3NlcnQgdGhlIGNvcnJlY3RuZXNzIG9mIHRoZSB1bmRlcmx5aW5nIEFJIG91dHB1dC5cblxuWmFtYm/igJlzIHZlcmlmaWNhdGlvbiBlbmdpbmUgaW50ZWdyYXRlcyBleGlzdGluZyB0b29scyBsaWtlIFByb3ZpYmVDb2Rl4oCZcyBhdWRpdCB0ZWFzZXIgYW5kIFNpZ25hbOKAmXMgdHJ1c3QgcGFzc3BvcnQsIGRlbGl2ZXJpbmcgYSB1bmlmaWVkIOKAnHJlc2VhcmNo4oCRdG/igJFsYXVuY2jigJ0gd29ya2Zsb3cuIFVzZXJzIGNhbiB0cmlnZ2VyIGEgcmVhZOKAkW9ubHkgYXVkaXQgb2YgcHVibGljIHJlcG9zaXRvcmllcywgcmVjZWl2ZSBhIFByb3ZpYmUgU2NvcmUsIGFuZCBpbnN0YW50bHkgZ2VuZXJhdGUgYSBjZXJ0aWZpZWQgcmVjZWlwdCB0aGF0IGNhbiBiZSBwdWJsaXNoZWQgb3Igc2hhcmVkIHdpdGggc3Rha2Vob2xkZXJzLiBUaGUgcGxhdGZvcm3igJlzIHVuaXZlcnNhbCBzY29yZSBvZiA2MiAocmVzZWFyY2ggYnJhbmNoLCBtZWRpdW0gaW1wYWN0KSBpbmRpY2F0ZXMgYSByYXBpZCAxNeKAkW1pbnV0ZSBpbXBsZW1lbnRhdGlvbiBwYXRoIGZvciB0ZWFtcyBzZWVraW5nIHRyYW5zcGFyZW50IEFJIGFjY291bnRhYmlsaXR5LlxuXG7igJxQcm92aWRpbmcgYW4gYXVkaXRhYmxlLCBieXRl4oCRbGV2ZWwgcmVjZWlwdCBlbGltaW5hdGVzIHRoZSBndWVzc3dvcmsgYXJvdW5kIEFJIGVmZmljaWVuY3kgY2xhaW1zLOKAnSBzYWlkICoqQWlzaGEgUGF0ZWwsIENoaWVmIFByb2R1Y3QgT2ZmaWNlciBvZiBaYW1ibyoqLiDigJxPdXIgdXNlcnMgbm93IGhhdmUgYSBzaW5nbGUgc291cmNlIG9mIHRydXRoIHRoYXQgYnJpZGdlcyB0ZWNobmljYWwgdmFsaWRhdGlvbiBhbmQgYnVzaW5lc3MgaW1wYWN0LuKAnVxuXG4qKkFib3V0IFphbWJvKiogIFxuWmFtYm8gYnVpbGRzIHRoZSB2ZXJpZmlhYmxlIHdvcmsgbGF5ZXIgZm9yIGFydGlmaWNpYWwgaW50ZWxsaWdlbmNlLCBlbmFibGluZyBkZXZlbG9wZXJzLCBlbnRlcnByaXNlcywgYW5kIHJlc2VhcmNoZXJzIHRvIGNlcnRpZnkgQUnigJFnZW5lcmF0ZWQgb3V0cHV0cyB3aXRoIGltbXV0YWJsZSBwcm9vZnMuIEJ5IGFuY2hvcmluZyBieXRl4oCRbGV2ZWwgbWV0cmljcyB0byBibG9ja2NoYWlu4oCRZ3JhZGUgcmVjZWlwdHMsIFphbWJvIGRyaXZlcyB0cnVzdCwgcmVwcm9kdWNpYmlsaXR5LCBhbmQgbWVhc3VyYWJsZSBST0kgYWNyb3NzIHRoZSBBSSBlY29zeXN0ZW0uXG5cbioqTWVkaWEgQ29udGFjdCoqICBcbkpvcmRhbiBMZWUsIERpcmVjdG9yIG9mIENvbW11bmljYXRpb25zICBcbmVtYWlsOiBwcmVzc0B6YW1iby5kZXYgIFxucGhvbmU6ICsx4oCvMjEy4oCRNTU14oCRMDE5OCJ9LCJyZWNlaXB0X3NjaGVtYV92ZXJzaW9uIjoiMC40Iiwic2lkZV9lZmZlY3RzIjp7ImRlY2xhcmF0aW9uX2hhc2giOiJzaGEyNTY6NDVhYWQzOGYzYWE5ODJiOWFhZmU5MmVjYjQxNmViZTk4NzkxZWRkYmFmOGFiNmRmMGJkMDg2MDViN2MxYmZlZSIsImRlY2xhcmVkIjpbIm5vbmUiXSwic2NoZW1hX3ZlcnNpb24iOiJ6YW1iby1zaWRlLWVmZmVjdHMvMSJ9LCJ0b29sIjp7Im5hbWUiOiJ3cml0ZSIsInNjb3BlIjoicHVibGljIiwidmVyc2lvbiI6IjQuMC4wIn19
Timestamp: 2026-10-14T19:29:52.735Z

Bound call context

Receipt schema: 0.4
Tool name: write
Tool version: 4.0.0
Permission scope: public
Caller type: session
Caller ID: sha256:b52df08e3637a308b7b45d3d76ecc258ed72c67d2a023abafcc10b648480d20a
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: 73d08d752760edaf6bb2ee2763e528da6e62f5346f36066cc1a37f882bacab94
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":"2026-10-14T19:29:52.735Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:a067ea611598f39eed2c6f35502f45fe6e9421015fde4de5aac3be75e62a5dd9","receipt_uuid":"efd2f511-d741-4ed6-a5e5-b55f4a6665b2","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

Markdown

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HTML

<a href="https://zambo.dev/run/efd2f511-d741-4ed6-a5e5-b55f4a6665b2?ref=badge"><img src="https://zambo.dev/api/receipt/efd2f511-d741-4ed6-a5e5-b55f4a6665b2/badge.svg" alt="Verifiable Zambo receipt"></a>

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