Official Wallsec emails only ever come from an @wallsec.co.uk address.

Networks

Block

In one sentence

A batch of transactions added to the ledger together, linked to the block before it.

Blocks arrive at roughly regular intervals — about ten minutes on Bitcoin, seconds on many other networks — and each references its predecessor, forming the chain.

Block times matter in an investigation because they set the tempo of a trace. On a fast, cheap network, funds can pass through dozens of addresses in the time a single Bitcoin block takes to appear.

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