# Jonathan Bier - Bitcoin’s Initial Block Download (Highlights) ![rw-book-cover|256](https://readwise-assets.s3.amazonaws.com/static/images/article2.74d541386bbf.png) ## Metadata **Cover**:: https://readwise-assets.s3.amazonaws.com/static/images/article2.74d541386bbf.png **Source**:: #from/readwise **Zettel**:: #zettel/fleeting **Status**:: #x **Authors**:: [[Jonathan Bier]] **Full Title**:: Bitcoin’s Initial Block Download **Category**:: #articles #readwise/articles **Category Icon**:: 📰 **Document Tags**:: #bitcoin #blockchain #performance **URL**:: [blog.bitmex.com](https://blog.bitmex.com/bitcoins-initial-block-download/) **Host**:: [[blog.bitmex.com]] **Highlighted**:: [[2020-02-15]] **Created**:: [[2022-09-26]] ## Highlights - libsecp256k enabled - does not validate signatures for transaction inputs where the witness is segregated