News

• Slides from the Grin Overview talk I gave at the first Moscow meetup are now up.

Dev 

• There are 104 open issues in /grin, and 37 open issues in /grin-wallet.

• Merged PRs: 10 in /grin | 4 in /grin-wallet | 8 unique contributors

• grin wallet 1.1.0-beta3 released.

• @yeastplume’s weekly update.

• The latest dev meeting covered the timeline for 1.1.0 release, scheduled hard fork planning, and deprecation of http transfer support.

• Proposal by @jaspervdm for improved bulletproof rewinds.

• Proposal by @antiochp for optimising relative kernel lock heights.

• New gitter channel for grin-related cryptography.

• Next bi-weekly developer meeting is scheduled for Tuesday May 28 @ 15:00 UTC in grin/Dev on Gitter. You can add topics to the agenda.

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Governance

• The next bi-weekly governance meeting is scheduled for tomorrow Tue May 21 @ 15:00 UTC in grin/Lobby on Gitter. You can add topics to the agenda.

Upcoming events

• July , London, UK: 4th Grin Meetup

This edition’s photo by Ryan Jacobson on Unsplash.

URL to share this article: https://grinnews.substack.com/p/49-looking-ahead-

This newsletter is curated by Daniel Lehnberg. Any views expressed are personal and do not represent an official position of the Grin project.

Got news or articles you would like to include? Any feedback or other suggestions? drop me a line on daniel.lehnberg-at-protonmail.com or find me on Gitter.

Donations are kindly accepted via wallet713: 
grinbox://gVwcktstZH4w2gfmZwCYkz2n9NdTG8vXxdbsJCTy5JaoeZXtVv18

Grin user @Grumpy getting ready for the MCC

News

• Grin got a strong vote of confidence last week by the anonymous donor who donated a full coinbase transaction from 2010, worth 50 BTC to the dev fund. Thank you 🎈

• The 4th Grin London Meetup was announced for July 16th.

• Slides from the talk I gave on Grin Atomic Swaps at last week's Binance Labs meetup in Berlin.

Dev 

• There are 110 open issues in /grin, and 34 open issues in /grin-wallet.

• Merged PRs: 4 in /grin | 4 in /grin-wallet | 3 unique contributors

• @yeastplume open sourced his Samir's Secret Sharing skunkworks project, an entry point into further research for adding multi-sig support into the official grin wallet.

• v1.1.0-beta2 was released, now with Azure Pipelines CI thanks to @quentinlesceller.

• Invoice transactions support now merged by @yeastplume.

• Concerns raised by @timolson about the use of Siphash for proof of work, challenged by @tromp.

• @yeastplume’s weekly update.

• Next bi-weekly developer meeting is scheduled for tomorrow Tuesday May 14 @ 15:00 UTC in grin/Dev on Gitter. You can add topics to the agenda.

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Governance

• Draft proposal for a 2019 Grin budget.

• The last governance meeting discussed funding and financial transparency report, and a simplified onboarding flow.

• Ecosystem meeting notes for the past two meetings are now up.

• The next bi-weekly governance meeting is scheduled for tomorrow Tue May 21 @ 15:00 UTC in grin/Lobby on Gitter. You can add topics to the agenda.

Upcoming events

• May 16, Moscow, Russia: 1st Grin Meetup

• July , London, UK: 4th Grin Meetup

URL to share this article: https://grinnews.substack.com/p/48-an-endorsement-

This newsletter is curated by Daniel Lehnberg. Any views expressed are personal and do not represent an official position of the Grin project.

Got news or articles you would like to include? Any feedback or other suggestions? drop me a line on daniel.lehnberg-at-protonmail.com or find me on Gitter.

Donations are kindly accepted via wallet713: 
grinbox://gVwcktstZH4w2gfmZwCYkz2n9NdTG8vXxdbsJCTy5JaoeZXtVv18

News

• Grin's UTXO set continues to shrink, and has now been reduced by 35% over the past 10 days. Some proper wizardry right there. 🧙‍♂️

• Videos from the Grin Amsterdam talks are now up on Youtube. Thanks to Bitonic for doing the recordings and livestream.

• Nathaniel Whittemore outlines crypto narratives for Spring 2019, in which he writes that “the patina of the fair launch narrative has come off a bit after Grin”. Valid assertion? Maybe, I for one wouldn’t know. It does however beg the question of what exactly was supposed to have happened by now, three months into Grin’s mainnet existence. And one might also wonder how any of this would help justify a forced dev tax for other projects. ツ

Dev 

• There are 110 open issues in /grin, and 32 open issues in /grin-wallet.

• Merged PRs: 11 in /grin | 1 in /grin-wallet | 5 unique contributors

• The last dev meeting covered planning for v1.1.0, future I2P support, git branching models, and tx slate versioning.

• @yeastplume is working on invoicing support for wallet and has created a rust implementation of wallet seed sharding using Samir's Secret Sharing. Pretty cool stuff.

• @quentinlesceller has been hard at work getting Azure Pipelines properly set up as we move away from Travis.

• @antiochp asked for input on optimising Merkle Proofs by aggregation.

• Next bi-weekly developer meeting is scheduled for Tuesday May 14 @ 15:00 UTC in grin/Dev on Gitter. You can add topics to the agenda.

Enjoy reading Grin News? 💌
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Governance

• The first financial transparency report is up for 2019 Q1. Tl;dr - we spent money on devs and audit in Q1, we received some funds, but we could definitely do with some more. Consider contributing!

• The next bi-weekly governance meeting is scheduled for tomorrow Tue May 7 @ 15:00 UTC in grin/Lobby on Gitter. You can add topics to the agenda.

Research

• Why Software Projects need heroes (Lessons learned from 1100+ projects), paper by Majumder et al.

Upcoming events

• May 16, Moscow, Russia: 1st Grin Meetup

This edition’s photo by Kevin Clark on Unsplash.

URL to share this article: https://grinnews.substack.com/p/47-lost-patina-

This newsletter is curated by Daniel Lehnberg. Any views expressed are personal and do not represent an official position of the Grin project.

Got news or articles you would like to include? Any feedback or other suggestions? drop me a line on daniel.lehnberg-at-protonmail.com or find me on Gitter.

Donations are kindly accepted via wallet713: 
grinbox://gVwcktstZH4w2gfmZwCYkz2n9NdTG8vXxdbsJCTy5JaoeZXtVv18

News

• Grin's UTXO set shrank by 15% over the past week as outputs were consolidated and old data was thrown into the dustbin. All automatically, thanks to Mimblewimble. No hard drive was hurt in the process.

• TMGOX made the first physical sale of goods paid for in Grin, using Knockturn Allee payment processing.

• GrinMint published data on Grin Mining Pool Profitability.

• Smith+Crown published a report on Grin. Decent reporting on the facts, the subjective commentary disputes the $100m mining number and questions the soundness of Grin’s development approach. General focus seems to be on whether price will appreciate... 💤

• @i1skn gave a Grin intro at Crypto Monday in Berlin. Video | Slides

• 1st Grin meetup in Moscow announced for May 16.

• Udi went on a rant. If you identify as a harry-potter-obsessed-shitcoin-VC, please take note, Crypto Twitter deserves to know the truth you’ve been hiding from them.

  Udi Wertheimer@udiWertheimer

  Things that Harry-Potter-obsessed-shitcoin-VCs won’t tell you (or don’t realize): most (all?) @grinMW exchanges and pools use an “addressing” scheme similar to Bitcoin’s early (and justly abandoned) “Pay to IP” scheme, which is completely insecure and leaks private data

  April 21st 2019

  12 Retweets67 Likes

Dev 

• There are 103 open issues in /grin, and 32 open issues in /grin-wallet.

• Merged PRs: 10 in /grin | 4 in /grin-wallet | 7 unique contributors

• Discussion on ingoing/outgoing connections in P2P networking comparing Bitcoin and Grin’s current approach.

• @yeastplume started work on invoice transaction flow via API.

• Slate compatibility fixes ahead of v1.1.0, by @bddap and @yeastplume.

• Clarifications in the forum on how compatibility post v1.1.0 is going to work.

• Peer max count was increased significantly by @ignopeverell.

• @yeastplume’s weekly update.

• Discussion re git branching models.

• Rust’s 2019 roadmap

• Next bi-weekly developer meeting is scheduled for Tuesday Apr 30 @ 15:00 UTC in grin/Dev on Gitter. You can add topics to the agenda.

Enjoy reading Grin News? 💌
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Governance

• Income and spending logs were updated by @lehnberg ahead of the Q1 transparency report.

• @kargakis provided a script for easy checking of unaccounted for income in the income log.

• Governance meeting discussed reporting, financial logging, supporting 3rd party projects and improving Grin evangelism.

• The next bi-weekly governance meeting is scheduled for tomorrow Tue May 7 @ 15:00 UTC in grin/Lobby on Gitter. You can add topics to the agenda.

Research

• Exploring the Monero Peer-to-Peer network, paper by Cao et al.

• Discussion re Utreexo and Accumulators, cross-posted on the forum.

Upcoming events

• May 16, Moscow, Russia: 1st Grin Meetup

This edition’s photo by Adli Wahid on Unsplash.

URL to share this article: https://grinnews.substack.com/p/46-spring-cleaning-utxos-

This newsletter is curated by Daniel Lehnberg. Any views expressed are personal and do not represent an official position of the Grin project.

Got news or articles you would like to include? Any feedback or other suggestions? drop me a line on daniel.lehnberg-at-protonmail.com or find me on Gitter.

Donations are kindly accepted via wallet713: 
grinbox://gVwcktstZH4w2gfmZwCYkz2n9NdTG8vXxdbsJCTy5JaoeZXtVv18

Fellow grinners,

It seems I did it again: I wrote last week’s newsletter, published it on socials, but forgot to send it out to you subscribers. 🤦‍♀️ Once is no time, twice points to a process that doesn’t work. So I’m changing mine and hope this doesn’t happen again.

Have a look at last week’s issue in case you missed it.

Best,
Daniel

News

• @jaspervdm / vault713 is raising funds to build GrinSwap, open source Grin Atomic Swaps with Bitcoin and Ethereum. (disclaimer: I’m part of vault713)

• Innosilicon announced details of their Grin ASIC miner. Hats off to their web design team btw, it’s got a proper 1998 Geocities retro feel to it, animated GIFs and all. I like. ツ

• @undersearcher did a tweet storm on useful Grin articles for those new to the project.

• CryptoUnlocked announced a prediction market betting on Grin's network hashrate, where proceeds go to Grin's dev fund if it succeeds.

Dev 

• There are 102 open issues in /grin, and 31 open issues in /grin-wallet. 

• 7 Pull Requests were merged into /grin and 2 Pull Requests into /grin-wallet in the past week, by 5 unique contributors.

• Last dev meeting discussed CI tools, tests, protocol versioning, beta status ahead of release of 1.1.0, and how we handle branches.

• Next bi-weekly developer meeting is scheduled for Tuesday Apr 30 @ 15:00 UTC in grin/Dev on Gitter. You can add topics to the agenda.

Enjoy reading Grin News? 💌
Donate some grins to support the newsletter 💁‍♀️
grinbox://gVwcktstZH4w2gfmZwCYkz2n9NdTG8vXxdbsJCTy5JaoeZXtVv18

Governance

• The next bi-weekly governance meeting is scheduled for tomorrow Tue Apr 23 @ 15:00 UTC in grin/Lobby on Gitter. You can add topics to the agenda.

Research

• TariLabs published an RFC for their transaction protocol covering multi-party transactions and potential attack vectors.

• Cryptographic Accumulators implementation written in Rust.

URL to share this article: https://grinnews.substack.com/p/45-grin-atomic-swaps-

This newsletter is curated by Daniel Lehnberg. Any views expressed are personal and do not represent an official position of the Grin project.

Got news or articles you would like to include? Any feedback or other suggestions? drop me a line on daniel.lehnberg-at-protonmail.com or find me on Gitter.

Donations are kindly accepted via wallet713: 
grinbox://gVwcktstZH4w2gfmZwCYkz2n9NdTG8vXxdbsJCTy5JaoeZXtVv18