Does the Bitcoin white paper talk about validating nodes? -…

Does the Bitcoin white paper talk about validating nodes?
- Yes. It uses “nodes” to describe the actors that verify blocks/transactions and only accept valid ones, and (separately) introduces SPV as a lighter, trustier mode:
- Section 5 (Network): “Nodes accept the block only if all transactions in it are valid and not already spent,” and “nodes express their acceptance by working on the next block.” In the paper, miners are the nodes that both validate and mine.
- Section 8 (SPV): Describes verifying without running a full node, notes it’s reliable only if the majority of CPU power is honest, and suggests merchants run full nodes for higher assurance.
- The paper doesn’t explicitly distinguish today’s terminology of “non-mining validating nodes,” but the model is consistent: full validation gives stronger assurances than SPV, and SPV’s safety depends on the honest-majority assumption.