Popeller

Last week I attended Scaling Bitcoin in Hong Kong. I will try to summarize my main takeaways from that. Segregated witness The talk that caused most buzz was Pieter Wuille on segregated witness. This is a really interesting idea that’s actually implemented (sort of) into bitcoin core. It’s moving the sigScript (basically the signatures) out […]

I’m attending Scaling Bitcoin in Hong Kong to present my and Rusty Russell‘s work on IBLT and Weak Blocks. We’ll start on the 7th at 12:15 local time, or 04:00 UTC. Schedule here. My part of the talk will cover IBLT specific statistical analyses, most of which can be found on this blog. Rusty’s part […]

Mycelium has implemented Proof of Payment (BIP120 and BIP121), and I’m really glad they did. It’s one of the most popular wallets out there. Plus, I implemented most of it. I’d like to show you how smooth the user experience can be when PoP is used poperly! If you would like to play with this, […]

I have written two BIPs (Bitcoin Improvement Proposal), BIP120 and BIP121, that specify how a wallet can prove that it has made a payment. This blog post takes a stab at explaining this process. If you want to play with this, install Mycelium on android and go to my demo site and try it out! […]

<< Part IV | This is Part V of a multi-part series on Bitcoin block propagation with IBLT. Rusty Russell has dumped mempool data from 4 different nodes around the globe. It covers a week’s worth of data. The purpose of the dumps was to get an idea on how similar the mempools are. The […]

<< Part III | This is Part IV of a multi-part series on Bitcoin block propagation with IBLT. | Part V >> Failure probability will increase when we squeeze more differences into the IBLT. Basically, I want to answer the following question: How will failure probability increase when differences increase? So, with a fixed IBLT, […]

<< Part II | This is Part III of a multi-part series on Bitcoin block propagation with IBLT. | Part IV >> I want to get idea on how failure probability, the probaility that decoding of the IBLT fails, depends on cellCount. So the question is How fast does failure probability drop when the IBLT […]

<< Part I | This is Part II of a multi-part series on Bitcoin block propagation with IBLT. | Part III >>> In part I of this IBLT series, Bitcoin block propagation with IBLT, Part I: infographic, I used 3 hash functions and a value size of 64 bytes. Where did I get those numbers […]

This is Part I of a multi-part series on Bitcoin block propagation with IBLT. | Part II >> Skip boring text and go straight to infographic! Late 2014 I started looking into IBLT (Invertible Bloom Lookup Tables) applied to Bitcoin block propagation, after reading a github gist written by Gavin Andresen. Most of my findings […]