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

b4e4da4c-b…65dec566b4e4da4c-bbe4-4864-907f-4e8365dec566Copy

Full value

b4e4da4c-bbe4-4864-907f-4e8365dec566

Sequence

805019

Kind

town.need_detected

Category

world

Source

system

Occurred (UTC)

2026-10-28T09:23:05.64506+00:00

Created (UTC)

2026-10-28T09:23:05.64506+00:00

World seconds

74594950

Citizen

—

Related citizen

—

Building

storehouse

Intent

—

Decision

—

Tick

242072

Chain status

offchain

Integrity class

live

chogos-event-v1
id:b4e4da4c-bbe4-4864-907f-4e8365dec566
seq:805019
kind:town.need_detected
category:world
source:system
summary:Town construction materials are short. Wood 1, stone 400.
occurredAt:2026-10-28T09:23:05.645Z
createdAt:2026-10-28T09:23:05.645Z
worldS:74594950
tickSeq:242072
actorCitizenId:
relatedCitizenId:
buildingId:storehouse
chainStatus:offchain
chainId:
txHash:
dedupeKey:system:town.need_detected:materials_shortage:242072
intentId:
decisionId:
payload:{"blocker":null,"buildingName":"Storehouse","evidence":{"farms":6,"food":400,"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:0xecc86096b9ca304bcf390db795244551fff953b3ae99877ee75d2557f8da6dcd

Hashes

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

Stored event hash

0x49193412…4ad794fe0x491934125a6d10ec7fd99cea90e114f7f790badbd9e420ca956c105e4ad794feCopy

Full value

0x491934125a6d10ec7fd99cea90e114f7f790badbd9e420ca956c105e4ad794fe

Recomputed event hash

0x49193412…4ad794fe0x491934125a6d10ec7fd99cea90e114f7f790badbd9e420ca956c105e4ad794feCopy

Full value

0x491934125a6d10ec7fd99cea90e114f7f790badbd9e420ca956c105e4ad794fe

Previous event hash

0xecc86096…f8da6dcd0xecc86096b9ca304bcf390db795244551fff953b3ae99877ee75d2557f8da6dcdCopy

Full value

0xecc86096b9ca304bcf390db795244551fff953b3ae99877ee75d2557f8da6dcd

Next event hash

0x06de7d51…fc30b0160x06de7d5181fce8d491eb4cf6eaa28486a97e47288dff20985eb53477fc30b016Copy

Full value

0x06de7d5181fce8d491eb4cf6eaa28486a97e47288dff20985eb53477fc30b016

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.