Over the last 32 hours, I drove through Southern California, visiting hospitals, urgent care centers, and the homes of health care workers in the Santa Barbara, Los Angeles, Glendale, and San Bernardino areas. I visited over a dozen different facilities. As part of the Masked Protectors, a group I started…


Drs. Brosseau and Sietsema,

This is an open-letter response to this article:

http://www.cidrap.umn.edu/news-perspective/2020/04/commentary-masks-all-covid-19-not-based-sound-data

I found that your article to be inaccurate in several ways, and I wanted to offer some suggestions for corrections.

In your article, you argue that the #masksforall movement is based on unsound data and bad science…


ISPs hate him! Learn how to make your block 75% Xthinner with this one weird trick!

Abstract

We can encode the transaction set for a block efficiently by only specifying one or two bytes per transaction for most transactions. With LTOR, we can omit the first few leading bytes of the TXID because they are the same as neighboring transactions in the block, and for all orders…


TL;DR: During the stress test, blocks propagated through the non-China mainnet at around 300–1000 kB/s. This is pretty slow, and would cause problems with orphan rates if block sizes were frequently larger than 8 MB unless we improve our block propagation algorithms.

Introduction

On September 1st, 2018, Bitcoin Cash users…


I recently became interested in a potential application of the Bitcoin ABC’s proposed OP_CHECKDATASIGVERIFY (OP_DSV) opcode. This opcode appears to be derived from the OP_CHECKSIGFROMSTACKVERIFY opcode which was added to Elements Alpha on (edit: fixed date) May 28, 2015. These opcodes allow a script to include an ECDSA signed message…


How I learned to stop worrying and love the DAG

The main reason I like the canonical block order (CBO) concept is that it teaches us something new about how Bitcoin works. It takes something from Bitcoin that we all thought was a necessary security feature of the system and eliminates it entirely. This makes us afraid, since none of…


How I learned to stop worrying and love the DAG

The main reason I like the canonical block order (CBO) concept is that it teaches us something new about how Bitcoin works, and about ourselves too. It takes something from Bitcoin that we all thought was a necessary security feature of the system and eliminates it entirely. This causes anxiety…

Jonathan Toomim

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