TL;DR: Crypto Dev Digest (CDD) documents cryptocurrency development, highlighting the projects and persons working under the hood. Bitcoin Core 0.19.0(.1) was released recently by the Bitcoin Core team. Bitcoin ABC’s Amaury Séchet is cautiously optimistic about a new Bitcoin Cash specification from Bitcoin Verde. Ethereum co-founder Vitalik Buterin asks for a smart contract wallet with social recovery. Those and much more in this packed digest.



Bitcoin Core 0.19.0(.1) Released

New BCH Specification

Amaury Séchet, lead developer for BCH reference client Bitcoin ABC, took to a Medium post recently, praising the proposal of Josh Green and his Bitcoin Verde operation. Green has created a specification (spec), prized among open source developers who covet a spirit of cooperation on a given project. Specs are especially helpful in finding bugs, spinning up improvements, and documenting changes generally.

Specifications are vital, but they’re also time-consuming and can be an encyclopedic task — a real project for a team already taxed with too much to do. As Séchet explained, “it is expected from a handful of people to not only design the protocol, but coordinate with the ecosystem, write the software for it, run tests, and write a specification for it, all with little funding and a lot of posturing from 3rd parties wanting to gain influence without providing the amount of work that would justify such influence.”

Green’s Bitcoin Verde is a BCH full node implementation, basically written from scratch. Séchet acknowledged as much, noting how Green “more than anyone else can attest to how important having a proper specification is, as it would have made his job tremendously easier.” Séchet is effusive, generous even, in his praise of Green and the proposed spec, but goes on to caution against capture as an attack vector.

“In order to make sure no act of manipulation takes place, it is vitally important for the community to ensure that the right people are involved. People who have proven, not only by their words, but by their actions and achievements, their commitment to Bitcoin Cash and its goal: peer to peer cash for the world, enabled by cheap, fast and reliable transactions,” he insisted.

Brockwell Interviews Lunde About CashFusion

It's not enough to just rail against govts & companies spying on us: We need to support the people who are already making tools that help give us back our privacy. CashFusion will launch soon, and I can't wait to check it out! @MarkLundeberghttps://t.co/ed830y7RiY pic.twitter.com/tSHLyzzebP — Naomi ₿rockwell (@naomibrockwell) November 18, 2019

This CashFusion transaction has 78 schnorr-signed inputs, a situation that's ripe for doing batched signature validation. Full nodes can decide to adopt batching at their leisure, I'm hoping to see some do it over the next year!. https://t.co/IFY6ZMS9To — Mark Lundeberg (@MarkLundeberg) November 23, 2019

Nice, Growing Selection of BCHD Nodes

There's a nice and growing selection of bchd nodes for the Neutrino Android wallet to connect to. Only p2p wallet on BCH. pic.twitter.com/fKdM50M0UD — Chris Pacia (@ChrisPacia) November 18, 2019

Smart Contract Wallet With Social Recovery, Argent-Style

Request: a smart contract wallet with social recovery, Argent-style, where you can put *arbitrary addresses* as guardians, with no expectation that those addresses use the same wallet. A separate javascript dapp any wallet can connect to would be used to approve recovery. — vitalik.eth (@VitalikButerin) November 18, 2019

Dash Roadmap for the Coming Months

Dash Roadmap for the coming months.

Development of the Dash Core, Dash Platform and DashPay is progressing really well.

New, groundbreaking products to be released this and next year.@Dashpay #cryptocurrencies pic.twitter.com/s6zlWlRmhz — Robert Wiecko (@RobertWiecko) November 18, 2019

Forever to Write This Code

BCH Developer Newsletter

**BCH Developers** if you have any updates for the BCH Developer Newsletter, please send an email to https://t.co/7kq1WcKTPN.mail@gmail.com with details – Recently completed:

Currently working on:

Future work:

Wants help with:#BCH #Developer #Newsletter — Michael Nunzio (@kilrcola) November 23, 2019

Efficient Merkle Path Verifier

For y‘all Scripters, I present the Efficient Merkle Path Verifier: {OP_NOT OP_ROLL OP_CAT OP_HASH160} x tree height

OP_EQUALVERIFY Input stack: alternating between {0, 1} and <path element>, where 0 means left branch and 1 means right branch. 4 bytes per height. #BitcoinCash — Tobias Ruck (@TobiasRuck) November 23, 2019

Bitcoin|Computer Up Soon

Thanks to @MarkLundeberg for helping to resolve this quickly. The Bitcoin|Computer will be back soon. Also, check out https://t.co/ilrvIXoOhX if you haven't!https://t.co/uVxVjUR0Qy — Clemens (@clemensley) November 23, 2019

How to Become a Fullstack Developer

This article maps out how to become a #fullstack #developer on the #BitcoinCash network. The focus is on #JavaScript, but the concepts apply to any #programming language. Retweets are appreciated. Let's share the knowledge!https://t.co/i32lK2JUnd — Chris Troutner (@christroutner) November 25, 2019

TobiasScriptHack to the Rescue

Ever get frustrated by the 520 byte limit when writing Scripts? 😒😒 This morning‘s #TobiScriptHack to the rescue🦸‍♂️: If your Script needs a lot pubkeys and addresses, try hashing all of that into a single hash in your Script. Then take the unhashed data as inputs and voilà… — Tobias Ruck (@TobiasRuck) November 26, 2019

Much Better Fork Overview

1/ A much better overview of the forks & currencies situation on Bitcoin, thanks to Reddit user u/lugaxker. Some more comments in the followups.https://t.co/wCPAWBH0uZ — bch 'make Bitcoin cash again' protocol upgrade (@btcfork) November 26, 2019

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DISCLOSURE: The author holds cryptocurrency as part of his financial portfolio, including BCH.