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glossary: Wording changes to SegWit and SPV entries

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@ -214,13 +214,13 @@ secret key (aka private key)::
----
Segregated Witness::
Segregated Witness is an upgrade to the Bitcoin protocol in which technological innovation separated signature data from bitcoin transactions. Segregated Witness was implemented as a soft fork; a change that technically makes Bitcoin’s protocol rules more restrictive.
Segregated Witness is an upgrade to the Bitcoin protocol in which signature ("witness") data is separated from sender/receiver data to further optimize the structure of transactions. Segregated Witness was implemented as a soft fork; a change that technically makes Bitcoin’s protocol rules more restrictive.
SHA::
The Secure Hash Algorithm or SHA is a family of cryptographic hash functions published by the National Institute of Standards and Technology (NIST).
Simplified Payment Verification (SPV)::
SPV or simplified payment verification is a method for verifying that particular transactions were included in a block, without downloading the entire block. The method is used by some lightweight Bitcoin clients.
SPV or simplified payment verification is a method for verifying that particular transactions were included in a block, without downloading the entire block. This method of verification is often used by lightweight Bitcoin clients.
soft fork::
soft fork or Soft-Forking Change is a temporary fork in the blockchain which commonly occurs when miners using non-upgraded nodes don't follow a new consensus rule their nodes don’t know about.