simplified payment verification (SPV) node [English]
No definition in earlier IP projects. ITrust definition not yet developed.
- Bitcoin Developer Glossary 2017 (†791 s.v. "SPV"): A method for verifying particular transactions were included in a block without downloading the entire block. The method is used by some lightweight Bitcoin clients.
- bitcoinj  (†835 para.4): In this mode, only transactions that are relevant to the wallet are stored. Every other transaction is thrown away or simply never downloaded to start with. The block chain is still used and broadcast transactions are still received, but those transactions are not and cannot be checked to ensure they are valid.
- Scaling Bitcoin  (†845 s.v. "SPV node (Simplified Payment Verificati): A scheme to validate transactions without storing the whole blockchain (only block headers) and without trusting any external service. Every transaction must be present with all its parent and sibling hashes in a merkle tree up to the root. SPV client trusts the most difficult chain of block headers and can validate if the transaction indeed belongs to a certain block header.