I found out P2WPKH is short for Pay-To-Witness-Public-Key-Hash , the native SegWit v0 single -key-address format

nostr:nprofile1qqsrkjrcy5c8290xmyphzzhj8r6j2eklzqzu0laea93evhmveshlhzspzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgjfug9k segwit sounds like a marketing word until you find out it is literally segregated witness. pulling the signature data into its own section is what freed up room for more transactions pe...