Why is separating signatures & transactions important.. https://video.nostr.build/c662e18ef568d441bd386bbe603fa1e6af1a9a99cf36f248b7ae955618fffe7f.mp4 nostr:note1zvczktg4gnvu5qcggm8y6qhp52w5g7r374awvg05fjk4zcwtn0dsjgca2l