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 #488 began a shift at Workshop B.

Id

c150ebb1-a…0d68c0e3c150ebb1-a295-46c7-9742-a79a0d68c0e3Copy

Full value

c150ebb1-a295-46c7-9742-a79a0d68c0e3

Sequence

804992

Kind

work.shift_started

Category

work

Source

simulation

Occurred (UTC)

2026-10-28T09:21:32.478243+00:00

Created (UTC)

2026-10-28T09:21:35.217272+00:00

World seconds

74589360

Citizen

a9fd3b2f-4…e44760a6a9fd3b2f-4729-474a-9722-8544e44760a6Copy

Full value

a9fd3b2f-4729-474a-9722-8544e44760a6

Related citizen

—

Building

workshop-b

Intent

—

Decision

—

Tick

242054

Chain status

offchain

Integrity class

live

chogos-event-v1
id:c150ebb1-a295-46c7-9742-a79a0d68c0e3
seq:804992
kind:work.shift_started
category:work
source:simulation
summary:CHOG #488 began a shift at Workshop B.
occurredAt:2026-10-28T09:21:32.478Z
createdAt:2026-10-28T09:21:35.217Z
worldS:74589360
tickSeq:242054
actorCitizenId:a9fd3b2f-4729-474a-9722-8544e44760a6
relatedCitizenId:
buildingId:workshop-b
chainStatus:offchain
chainId:
txHash:
dedupeKey:sim:a9fd3b2f-4729-474a-9722-8544e44760a6:7306:work.shift_started
intentId:
decisionId:
payload:{"action":"work","activity":"working","arrived":true,"buildingName":"Workshop B","consumed":{"wood":2},"durationWorldMinutes":269,"role":"crafter","shift":1,"tokenId":"996"}
stateTransition:{}
prevEventHash:0x93f4b8a9c31bd87491263f8ebdf281a92dc55a1cd7ab8d24581a762d2f8374a2

Hashes

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

Stored event hash

0x00537cbe…a5b734fc0x00537cbe754bb0bb932607c176bed492651a40a0266f1582b29a6505a5b734fcCopy

Full value

0x00537cbe754bb0bb932607c176bed492651a40a0266f1582b29a6505a5b734fc

Recomputed event hash

0x00537cbe…a5b734fc0x00537cbe754bb0bb932607c176bed492651a40a0266f1582b29a6505a5b734fcCopy

Full value

0x00537cbe754bb0bb932607c176bed492651a40a0266f1582b29a6505a5b734fc

Previous event hash

0x93f4b8a9…2f8374a20x93f4b8a9c31bd87491263f8ebdf281a92dc55a1cd7ab8d24581a762d2f8374a2Copy

Full value

0x93f4b8a9c31bd87491263f8ebdf281a92dc55a1cd7ab8d24581a762d2f8374a2

Next event hash

0x271aa599…37e794190x271aa59940793a9c0130d41bf9194ed19b40d97a9f40822789527bd637e79419Copy

Full value

0x271aa59940793a9c0130d41bf9194ed19b40d97a9f40822789527bd637e79419

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.