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 #1620 began a shift at Workshop B.

Id

176ef01f-e…728e23b0176ef01f-e412-43a4-9d75-611d728e23b0Copy

Full value

176ef01f-e412-43a4-9d75-611d728e23b0

Sequence

804961

Kind

work.shift_started

Category

work

Source

simulation

Occurred (UTC)

2026-10-28T09:19:45.978243+00:00

Created (UTC)

2026-10-28T09:19:48.828599+00:00

World seconds

74582970

Citizen

31705e99-2…d41f303831705e99-2224-409e-98af-f0a1d41f3038Copy

Full value

31705e99-2224-409e-98af-f0a1d41f3038

Related citizen

—

Building

workshop-b

Intent

—

Decision

—

Tick

242033

Chain status

offchain

Integrity class

live

chogos-event-v1
id:176ef01f-e412-43a4-9d75-611d728e23b0
seq:804961
kind:work.shift_started
category:work
source:simulation
summary:CHOG #1620 began a shift at Workshop B.
occurredAt:2026-10-28T09:19:45.978Z
createdAt:2026-10-28T09:19:48.828Z
worldS:74582970
tickSeq:242033
actorCitizenId:31705e99-2224-409e-98af-f0a1d41f3038
relatedCitizenId:
buildingId:workshop-b
chainStatus:offchain
chainId:
txHash:
dedupeKey:sim:31705e99-2224-409e-98af-f0a1d41f3038:12370:work.shift_started
intentId:
decisionId:
payload:{"action":"work","activity":"working","arrived":true,"buildingName":"Workshop B","consumed":{"wood":2},"durationWorldMinutes":242,"role":"crafter","shift":1,"tokenId":"159"}
stateTransition:{}
prevEventHash:0x32a19a9465411b3bf8ce5913bea38b32fa3db24e9108763790dfc7db7cde82d2

Hashes

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

Stored event hash

0xbfaecbd6…4d3eb52a0xbfaecbd693ef292764f3170d7206b29334d5e28655388800df490d784d3eb52aCopy

Full value

0xbfaecbd693ef292764f3170d7206b29334d5e28655388800df490d784d3eb52a

Recomputed event hash

0xbfaecbd6…4d3eb52a0xbfaecbd693ef292764f3170d7206b29334d5e28655388800df490d784d3eb52aCopy

Full value

0xbfaecbd693ef292764f3170d7206b29334d5e28655388800df490d784d3eb52a

Previous event hash

0x32a19a94…7cde82d20x32a19a9465411b3bf8ce5913bea38b32fa3db24e9108763790dfc7db7cde82d2Copy

Full value

0x32a19a9465411b3bf8ce5913bea38b32fa3db24e9108763790dfc7db7cde82d2

Next event hash

0xb438b71f…f70c7b0d0xb438b71f4c03e6b53bd869e5f91c8690fb8f80efcc2e887de2e585bcf70c7b0dCopy

Full value

0xb438b71f4c03e6b53bd869e5f91c8690fb8f80efcc2e887de2e585bcf70c7b0d

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.