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

System Town construction materials are short. Wood 1, stone 400.

Id

88438cc5-f…1220119988438cc5-f121-434d-91f3-72ac12201199Copy

Full value

88438cc5-f121-434d-91f3-72ac12201199

Sequence

806868

Kind

town.need_detected

Category

world

Source

system

Occurred (UTC)

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

Created (UTC)

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

World seconds

74871718

Citizen

—

Related citizen

—

Building

storehouse

Intent

—

Decision

—

Tick

242976

Chain status

offchain

Integrity class

live

chogos-event-v1
id:88438cc5-f121-434d-91f3-72ac12201199
seq:806868
kind:town.need_detected
category:world
source:system
summary:Town construction materials are short. Wood 1, stone 400.
occurredAt:2026-10-28T10:39:58.449Z
createdAt:2026-10-28T10:39:58.449Z
worldS:74871718
tickSeq:242976
actorCitizenId:
relatedCitizenId:
buildingId:storehouse
chainStatus:offchain
chainId:
txHash:
dedupeKey:system:town.need_detected:materials_shortage:242976
intentId:
decisionId:
payload:{"blocker":null,"buildingName":"Storehouse","evidence":{"farms":6,"food":391,"houses":18,"reservedLots":0,"stone":400,"tools":400,"underConstruction":[{"id":"farm-06","kind":"farm","progress":0},{"id":"house-18","kind":"house","progress":0},{"id":"workshop-06","kind":"workshop","progress":0}],"vacantServedLots":12,"wood":1,"workshops":6},"needType":"materials_shortage","previousStatus":"resolved","status":"active"}
stateTransition:{}
prevEventHash:0xb0007fe9a8137539b4a3c003beba1dee13b6ea63e2469d6d72bd4b6a06c19549

Hashes

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

Stored event hash

0x13a9b951…679d421c0x13a9b9513078fca50f799812f2c2b79ae6ad0a0eac131b8dbc1ec3cf679d421cCopy

Full value

0x13a9b9513078fca50f799812f2c2b79ae6ad0a0eac131b8dbc1ec3cf679d421c

Recomputed event hash

0x13a9b951…679d421c0x13a9b9513078fca50f799812f2c2b79ae6ad0a0eac131b8dbc1ec3cf679d421cCopy

Full value

0x13a9b9513078fca50f799812f2c2b79ae6ad0a0eac131b8dbc1ec3cf679d421c

Previous event hash

0xb0007fe9…06c195490xb0007fe9a8137539b4a3c003beba1dee13b6ea63e2469d6d72bd4b6a06c19549Copy

Full value

0xb0007fe9a8137539b4a3c003beba1dee13b6ea63e2469d6d72bd4b6a06c19549

Next event hash

0x60d400f6…d67a2cf90x60d400f609dfd0ed1e5dde135c1a5aaca04ea9d39071a807adb66918d67a2cf9Copy

Full value

0x60d400f609dfd0ed1e5dde135c1a5aaca04ea9d39071a807adb66918d67a2cf9

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.