How does SegWit change transaction structure [on hold]
How does SegWit change transaction structure [on hold] What is witness? Is it the data only composed of signatures part in transaction txins? How to compute txid before and after SegWit? BIP14 says wtxid is SHA256 of [nVersion][marker][flag][txins][txouts][witness][nLockTime]. Are those data that hashed as txid include witness of SegWit tx? How does witness be committed in Merkle tree? How does a tx be verified without SegWit? It will be good if specific data structures and formulas are presented. Thanks! http://ift.tt/2AmvgR0