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 #1574 began a shift at Workshop A.

Id

fa1f5c83-e…21b55a6afa1f5c83-e2de-4547-bbb5-9f2521b55a6aCopy

Full value

fa1f5c83-e2de-4547-bbb5-9f2521b55a6a

Sequence

806865

Kind

work.shift_started

Category

work

Source

simulation

Occurred (UTC)

2026-10-28T10:39:53.478243+00:00

Created (UTC)

2026-10-28T10:39:58.449106+00:00

World seconds

74871420

Citizen

5fbcd41e-4…99d2f20e5fbcd41e-4bfe-4a29-9ee3-3b2899d2f20eCopy

Full value

5fbcd41e-4bfe-4a29-9ee3-3b2899d2f20e

Related citizen

—

Building

workshop-a

Intent

—

Decision

—

Tick

242976

Chain status

offchain

Integrity class

live

chogos-event-v1
id:fa1f5c83-e2de-4547-bbb5-9f2521b55a6a
seq:806865
kind:work.shift_started
category:work
source:simulation
summary:CHOG #1574 began a shift at Workshop A.
occurredAt:2026-10-28T10:39:53.478Z
createdAt:2026-10-28T10:39:58.449Z
worldS:74871420
tickSeq:242976
actorCitizenId:5fbcd41e-4bfe-4a29-9ee3-3b2899d2f20e
relatedCitizenId:
buildingId:workshop-a
chainStatus:offchain
chainId:
txHash:
dedupeKey:sim:5fbcd41e-4bfe-4a29-9ee3-3b2899d2f20e:12444:work.shift_started
intentId:
decisionId:
payload:{"action":"work","activity":"working","arrived":true,"buildingName":"Workshop A","consumed":{"wood":2},"durationWorldMinutes":243,"role":"crafter","shift":2,"tokenId":"113"}
stateTransition:{}
prevEventHash:0x3083a2bd53a85fc3e32be67edda5b7e8d5b6f27412e79deec4965958ffbe5a4e

Hashes

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

Stored event hash

0xf2d21741…bc24d9e30xf2d2174115d3c17c929e643fa1bf21195168b8eeb3712118291fadadbc24d9e3Copy

Full value

0xf2d2174115d3c17c929e643fa1bf21195168b8eeb3712118291fadadbc24d9e3

Recomputed event hash

0xf2d21741…bc24d9e30xf2d2174115d3c17c929e643fa1bf21195168b8eeb3712118291fadadbc24d9e3Copy

Full value

0xf2d2174115d3c17c929e643fa1bf21195168b8eeb3712118291fadadbc24d9e3

Previous event hash

0x3083a2bd…ffbe5a4e0x3083a2bd53a85fc3e32be67edda5b7e8d5b6f27412e79deec4965958ffbe5a4eCopy

Full value

0x3083a2bd53a85fc3e32be67edda5b7e8d5b6f27412e79deec4965958ffbe5a4e

Next event hash

0xc95cd35b…9cf078a50xc95cd35bb02234aac601518dcc056bc51f6bb9ccc78472fcb68dbaa39cf078a5Copy

Full value

0xc95cd35bb02234aac601518dcc056bc51f6bb9ccc78472fcb68dbaa39cf078a5

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.