DEMO · DEMONSTRATION — not a customer case study · v1 · PUBLIC · HASH c7dd291b25692482…

QUESTION

What does Bitcoin transaction a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d prove about “Laszlo Hanyecz bought two pizzas for 10,000 BTC”?

INSUFFICIENT EVIDENCEEngine: INSUFFICIENT_EVIDENCE

INSUFFICIENT EVIDENCE for the commercial-meaning claim from the hash alone. This host does not perform a node lookup. Multiple public secondary pages describe this txid as the 22 May 2010 pizza payment; they appear to share one story origin (Bitcointalk / later retellings) and are not independent on-chain confirmation.

A 64-hex string can be a Bitcoin txid format. Inclusion, outputs, and fees are not established here. Even if a node later confirms 10,000 BTC moved, that does not by itself prove pizza delivery, legal identity, or USD value as the meaning of the payment. Clustering is not identity.

ESTABLISHED

None. ESTABLISHED is reserved for independently retrievable primary facts.

SUPPORTED

Public secondary pages (ChainQuery; a Bitcoin protocol guide) identify this txid as the May 2010 pizza transaction.

CONTRADICTED

None.

UNKNOWN

On-chain inclusion, block height, inputs/outputs, and fees — no node lookup.
Legal identity of key controllers.
That pizzas were delivered — off-chain, not proved by a transfer.

EVIDENCE REQUIREMENTS

R1 · Primary source · ADDRESSED
Identify the earliest independent origin. Addressed in this demonstration from cited public records.
R2 · Independent corroboration · ADDRESSED
A second independence group. Addressed in this demonstration from cited public records.
R3 · Contradiction search · ADDRESSED
Negative evidence must be sought, not assumed absent. Addressed in this demonstration from cited public records.
R4 · Provenance and unknowns · ADDRESSED
State what cannot be established. Addressed in this demonstration from cited public records.

PRIMARY EVIDENCE CARDS

EV1 · SUPPORTS

Secondary pages naming this txid as the pizza payment.

WHO: Public web authors
WHERE: chainquery.com; GitHub markdown
WHEN: Retrieved 2026-09-02
HOW: Read public pages. No bitcoind.

Provenance: Web pages.

Unknown: Node confirmation absent.

Group bitcointalk-story · SECONDARY

EVIDENCE GRAPH

Relational view. Derived items that share an origin are one independence group.

Requirements

R1 Primary sourceCOVERED
R2 Independent corroborationCOVERED
R3 Contradiction searchCOVERED
R4 Provenance and unknownsCOVERED

Evidence

Secondary pages naming this txid as the pizza payment.SUPPORTS
bitcointalk-story

Sources

10,000 BTC for Two PizzasSECONDARY
bitcointalk-story
examples/pizza-tx.mdSECONDARY
bitcointalk-story

DERIVED_FROM · L-talk → L-cq · bitcointalk-story
DERIVED_FROM · L-talk → L-gh · bitcointalk-story

INDEPENDENT CORROBORATION

Independent support branches: 1
Independent contradict branches: 0
Engine: A single independent branch cannot close the case.

LINEAGE

L-talk · bitcointalk-story
L-cq ← L-talk · bitcointalk-story
L-gh ← L-talk · bitcointalk-story

CONFLICTING

No contradiction search against the on-chain object was possible without a node.

MISSING EVIDENCE

bitcoind / indexer confirmation
Why: Only a node or equivalent establishes inclusion.
How to obtain: getrawtransaction on a synced node; record block hash and height.
Bitcointalk primary post
Why: Story origin.
How to obtain: Archive the original forum thread.

WHAT WOULD CHANGE THIS FINDING

A node-confirmed decode of this txid (would establish on-chain facts only).
Independent contemporaneous evidence of pizza delivery (would still be off-chain meaning).

CHALLENGES

NONE_FILED: Demonstration compile. Challenge this finding is open.

TIMELINE

2026-09-02T00:00:00.000Z — Demonstration report compiled from cited public records.
2026-09-02T00:00:00.000Z — evaluateCase run on recorded facts. No silent rewrite.

LIMITATIONS

DEMONSTRATION. No blockchain lookup was performed.
A hash does not prove real-world identity.

METHODOLOGY

Duplios Proof of Evidence Standard v0.1 (Duplios methodology — not an ISO, accredited, or industry-consensus standard). A question is decomposed into evidence requirements. Sources are recorded with independence groups and lineage. Copies that share an origin are one confirmation. Contradiction is searched, not assumed absent. AI output, detector scores, missing EXIF, and missing C2PA credentials are evidence or absences — not truth. evaluateCase returns SUPPORTED, CONTRADICTED, INSUFFICIENT_EVIDENCE, or HUMAN_REVIEW_REQUIRED. UNKNOWN stays UNKNOWN. A report hash identifies the bytes of this version; it does not prove the finding is true.

AUDIT TRAIL

standard=0.1.0
evaluateCase.state=INSUFFICIENT_EVIDENCE
public.state=INSUFFICIENT_EVIDENCE
no_automatic_network_fetch_at_runtime
demonstration_not_customer_case_study
sha256=c7dd291b256924821d5ae026bbe9e325bcf57d2576354f3da1b53e87308ded40

SOURCES

S1 · SECONDARY · ChainQuery · group bitcointalk-story
10,000 BTC for Two Pizzas
https://chainquery.com/stories/pizza-transaction
Retrieved 2026-09-02. Secondary retelling. Not a node.
S2 · SECONDARY · bitcoin-protocol-guide · group bitcointalk-story
examples/pizza-tx.md
https://github.com/Bortlesboat/bitcoin-protocol-guide/blob/main/examples/pizza-tx.md
Same public narrative family. Not a second independence group.

TRANSACTION LAYERS

ON_CHAIN_FACT · PLAUSIBLE_FORMAT — A transaction with this hash exists in a specific chain's history.
UNKNOWN · UNKNOWN — Wallet owner / beneficial controller.
OFF_CHAIN_ATTRIBUTION · INSUFFICIENT_EVIDENCE — This wallet belongs to Company X / Exchange Y / Person Z.
CLAIM · INSUFFICIENT_EVIDENCE — Company X added $50m.
INFERENCE · INSUFFICIENT_EVIDENCE — Therefore the company is buying / treasury is funded / the market moved because of this tx.

ID DEMO-PIZZA-TX · created 2026-09-02T00:00:00.000Z · requestor Public demonstration — not a customer case · confidentiality PUBLIC_DEMONSTRATION

A report hash identifies this version's bytes. It does not prove the finding is true. Corrections append a version. Silent rewrite is forbidden.

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