Verify event

Recorded world event

This is a recorded simulation or world event. Its hash and any Merkle proof check stored bytes. They do not make this event a blockchain transaction.

Event

Simulation CHOG #1468 began a shift at Workshop B.

Id

b3c85e4d-6…776464d1b3c85e4d-674f-437a-a92d-752e776464d1Copy

Full value

b3c85e4d-674f-437a-a92d-752e776464d1

Sequence

804959

Kind

work.shift_started

Category

work

Source

simulation

Occurred (UTC)

2026-10-28T09:19:35.478243+00:00

Created (UTC)

2026-10-28T09:19:38.798518+00:00

World seconds

74582340

Citizen

35e487ff-b…0912399935e487ff-bd3b-42c8-aec8-a44809123999Copy

Full value

35e487ff-bd3b-42c8-aec8-a44809123999

Related citizen

—

Building

workshop-b

Intent

—

Decision

—

Tick

242031

Chain status

offchain

Integrity class

live

chogos-event-v1
id:b3c85e4d-674f-437a-a92d-752e776464d1
seq:804959
kind:work.shift_started
category:work
source:simulation
summary:CHOG #1468 began a shift at Workshop B.
occurredAt:2026-10-28T09:19:35.478Z
createdAt:2026-10-28T09:19:38.798Z
worldS:74582340
tickSeq:242031
actorCitizenId:35e487ff-bd3b-42c8-aec8-a44809123999
relatedCitizenId:
buildingId:workshop-b
chainStatus:offchain
chainId:
txHash:
dedupeKey:sim:35e487ff-bd3b-42c8-aec8-a44809123999:12775:work.shift_started
intentId:
decisionId:
payload:{"action":"work","activity":"working","arrived":true,"buildingName":"Workshop B","consumed":{"wood":2},"durationWorldMinutes":240,"role":"crafter","shift":1,"tokenId":"7"}
stateTransition:{}
prevEventHash:0x923746fe8bc8eede53dff0c937bfd3b878bd99e925a779cfbf1dc947e9daa06e

Hashes

Offchain hashes stay on this page, in the canonical document, and in the JSON export. They are not explorer objects.

Stored event hash

0x1f6a0a2a…54f724860x1f6a0a2a0dd7c86937aac19de64dff4ba20b2dc79b9e660099f6c1a454f72486Copy

Full value

0x1f6a0a2a0dd7c86937aac19de64dff4ba20b2dc79b9e660099f6c1a454f72486

Recomputed event hash

0x1f6a0a2a…54f724860x1f6a0a2a0dd7c86937aac19de64dff4ba20b2dc79b9e660099f6c1a454f72486Copy

Full value

0x1f6a0a2a0dd7c86937aac19de64dff4ba20b2dc79b9e660099f6c1a454f72486

Previous event hash

0x923746fe…e9daa06e0x923746fe8bc8eede53dff0c937bfd3b878bd99e925a779cfbf1dc947e9daa06eCopy

Full value

0x923746fe8bc8eede53dff0c937bfd3b878bd99e925a779cfbf1dc947e9daa06e

Next event hash

0x32a19a94…7cde82d20x32a19a9465411b3bf8ce5913bea38b32fa3db24e9108763790dfc7db7cde82d2Copy

Full value

0x32a19a9465411b3bf8ce5913bea38b32fa3db24e9108763790dfc7db7cde82d2

Merkle batch id

—

Merkle root

—

Merkle proof

This event is not in a Merkle batch yet.

No inclusion proof is stored for this event yet.

Leaf encoding is bytes32 in an OpenZeppelin standard tree with sortLeaves false. A valid proof matches the supplied root only.

Anchor read

This event has no Merkle batch.

No validated anchor transaction is attached to this batch.

This page reassesses the observation included in the export. It does not open a second RPC from the browser. Repeat getBatch on the recorded contract before treating the root as published. EventAnchor does not check the inclusion proof.

Source

Vercel git commit

045b3fe38d65dfe80d92f37a6772b54aceca4caa

• src/lib/verify/canonical.ts
• src/lib/verify/merkle.ts
• src/lib/verify/chain.ts
• src/lib/verify/anchor.ts
• src/lib/verify/transfer-log.ts
• src/lib/world/transfer.ts
• src/components/verify/event-verifier.tsx
• contracts/src/EventAnchor.sol

Download machine-readable export

• Recompute the SHA-256 of the chogos-event-v1 canonical document from event. Do not trust serverRecomputedHash or any status label.
• Compare that digest to storedHash.
• When previous and next are present, check that the live hash chain links match.
• Verify the OpenZeppelin standard Merkle proof: leaf encoding bytes32, sortLeaves false, against batch.merkleRoot.
• A valid inclusion proof means the leaf matches the supplied root. It does not prove the root was published onchain.
• When anchorObservation is present, repeat eth_chainId, eth_getCode, the transaction receipt, and EventAnchor.getBatch on the recorded chain. The embedded observation is one server read, not a proof by itself.
• EventAnchor stores roots only. It does not verify inclusion and it does not prove the event happened.
• For an nft.transferred row, compare chain 143, the Chog Genesis contract, transaction hash, block, block hash, log index, sender, receiver, and token id with the explorer log. chain_status confirmed is not that comparison. transferLog.matched is true only after a read-only receipt check matched.
• Do not send event data to a third-party hashing site.
• This export is data. Recompute the hash and Merkle proof locally. A matching hash is not proof that the simulation was truthful.
• A privileged database operator can still rewrite history and recompute hashes. An onchain root only detects that after the root was published.
• serverRecomputedHash is a convenience. Compare your own SHA-256 of the canonical document with storedHash.
• Do not send this export to a third-party hashing site.
• The database batch id is a UUID. The onchain batch id is the bytes32 in BatchAnchored. This export does not treat the UUID as that bytes32.