Block Timestamp

mquandallemquandalle FranceMember Posts: 50 ✭✭
In the context provided to Ethereum contracts there is a `BLK_TIMESTAMP` value which contains the timestamp of the block that host the transaction.

* How a miner can know the block timestamp at the contract runtime?
* How do other nodes can trust a block timestamp (especially if this value is used in contracts)?
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