Data science

The voting results for Optimism's Retro Funding Round 4 (RF4) were tallied last week and shared with the community.

This is the last in a series of posts on RF4, analyzing the ballot data from different angles. First, we cover high-level trends among voters. Then, we compare voters’ expressed preferences (from a pre-round survey) against their revealed preferences (from the voting data). Finally, we perform some clustering analysis on the votes and identify three distinct “blocs” of voters.

Retro Funding aims for iteration and improvement. We hope these insights can inform both the evolution of impact metrics and governance discussions around impact, badgeholder composition, and round design.

You can find links to our work here.

This post is a brief exploration of the before-after impact of Optimism’s Retro Funding (RF) on open source software (OSS) projects. For context, see some of our previous work on the Optimism ecosystem and especially this one from the start of RF3 in November 2023.

We explore:

1. Cohort analysis. Most RF3 projects were also in RF2. However, most projects in RF4 are new to the game.
2. Trends in developer activity before/after RF3. Builder numbers are up across the board since RF3, even when compared to a baseline cohort of other projects in the crypto ecosystem that have never received RF.
3. Onchain activity before/after RF3. Activity is increasing for most onchain projects, especially returning ones. However, RF impact is hard to isolate because L2 activity is rising everywhere.
4. Open source incentives. Over 50 projects turned their GitHubs public to apply for RF4. Will building in public become the norm or were they just trying to get into the round?

As always, we've included source code for all our analysis (and even CSV dumps of the underlying data), so you can check our work and draw your own conclusions.

Voting for Optimism’s fourth round of Retroactive Public Goods Funding (“Retro Funding”) opened on June 27 and will run until July 11, 2024. You can check out the voting interface here.

As discussed in our companion post, Impact Metrics for Optimism Retro Funding 4, the round is a significant departure from the previous three rounds. This round, voters will be comparing just 16 metrics – and using their ballots to construct a weighting function that can be applied consistently to the roughly 200 projects in the round.

This post is a deeper dive on the work we did at Open Source Observer to help organize data about projects and prepare Optimism badgeholders for voting.

Filecoin’s first RetroPGF round ("FIL RetroPGF 1") concluded last week, awarding nearly 200,000 FIL to 99 (out of 106 eligible) projects.

For a full discussion of the results, I strongly recommend reading Kiran Karra’s article for CryptoEconLab. It includes some excellent data visualizations as well as links to raw data and anonymized voting results.

This post will explore the results from a different angle, looking specifically at three aspects:

1. How the round compared to Optimism’s most recent round (RetroPGF3)
2. How impact was presented to badgeholders
3. How open source software impact was rewarded by badgeholders

It will conclude with some brief thoughts on how metrics can help with evaluation in future RetroPGF rounds.

As always, you can view the analysis notebooks here and run your own analysis using Open Source Observer data by going here. If you want additional context for how the round was run, check out the complete Notion guide here.

Open Source Observer is working with the Optimism Collective and its badgeholder community to develop a suite of impact metrics for assessing projects applying for Retro Funding 4.

Introduction​

Retro Funding 4 is the Optimism Collective’s first experiment with Metrics-based Evaluation. The hypothesis is that by leveraging quantitative metrics, citizens are able to more accurately express their preferences for the types of impact they want to reward, as well as make more accurate judgements of the impact delivered by individual projects.

In contrast to other Retro Funding experiments, badgeholders will not vote on individual projects but will rather vote via selecting and weighting a number of metrics which measure different types of impact.

The Optimism Foundation has published high level guidance on the types of impact that will be rewarded:

• Demand generated for Optimism blockspace
• Interactions from repeat Optimism users
• Interactions from Optimism users with high trust scores / onchain reputations
• Interactions of new Optimism users
• Open source license of contract code

The round is expected to receive applications from hundreds of projects building on six Superchain networks (OP Mainnet, Base, Frax, Metal, Mode, and Zora). Details for the round can be found here.

At Open Source Observer, our objective is to help the Optimism community arrive at up to 20 credible impact metrics that can be applied to projects with contracts on the Superchain.

This page explains where the metrics come from and includes a working list of all metrics under consideration for badgeholders. We will update it regularly, at least until the start of voting (June 23), to reflect the evolution of metrics. The first version metrics was released on 2024-05-16 and the most recent version (below) was released on 2024-06-24.

Octant recently kicked off Epoch 3, its latest reward allocation round, featuring 30 projects. This round comes three months after Epoch 2, which had a total of 24 projects in it. There are 20 projects continuing on from Epoch 2 into Epoch 3 - including Open Source Observer.

During Epoch 2, we published a blog post with some high-level indicators about the 20+ open source software (OSS) projects participating in the round. In this post, we'll provide some insights about the new OSS projects and refresh our analysis for the returning projects.

Overall, in Epoch 3, Octant is helping support:

• 26 (out of 30) projects with at least some recent OSS component to their work
• 343 GitHub repos with regular activity
• 651 developers making regular code commits or reviews

In the last 6 months, these 26 projects:

• Attracted 881 first-time contributors
• Closed over 4,646 issues (and created 4,856 new ones)
• Merged over 9,745 pull requests (and opened 11,534 new ones)

In our last post, we provided a snapshot on the open source software projects building on Arbitrum. In this post, we will apply a series of experimental impact metrics to identify positive growth and network contribution trends across a cohort of more than 300 major projects on Arbitrum.

We believe impact metrics such as these are instrumental in helping the Arbitrum DAO better design incentives and allocate capital across its ecosystem. The metrics we've included are all derived from both onchain and off-chain project data. They include well-established crypto indicators like active users, sequencer fees, and transaction counts as well as common OSS metrics like full-time active developers, issues closed, and new contributors.

The real value, however, lies in combining simple metrics in novel ways to filter and benchmark projects' contributions. We introduce four "impact pools" that can assist with this type of analysis. The pools are:

• Sustainable user growth: projects that not only bring large numbers of active users to the network but also retain and connect them easily to other dapps
• Developer growth: projects with the most developer activity and new contributors to its GitHub repos in recent months
• Blockspace demand: projects with the most transactions and sequencer fee contributions
• Momentum: projects with a mix of positive developer and onchain user trends

Gitcoin has been providing grants to open source software teams since 2019.

Over the last four years, more than $38M has been distributed via quadratic funding across 3,000+ projects and over 18,000 project applications. This includes both $22M in matching funds and $16M in direct donations from the community. On average, for every $1.00 put up by a matching fund donor, they have raised an additional $0.75 from the community.

(Overall, Gitcoin has allocated more than $50M towards public goods through a range of mechanisms, including direct donations and bounties, as well as quadratic funding.)

Although there are often anecdotal reports about Gitcoin's impact from projects, there have been few attempts to look longitudinally across a cohort of projects and track their impact over multiple years.

In this piece, we identify a group of 50 open source software projects that have received significant funding across multiple Gitcoin Grants rounds and then we examine the relationship between grants and growth.

Within this cohort, we see that for every $1M that has been paid out in grants since 2019, there are 7 full-time developers who are still around today. If we factor in the crowdfund multiplier, then every $1M put into the matching pool is associated with 13 retained full-time developers. These results have held up even during the bear market.

We are excited to present our inaugural report on the state of open source software (OSS) projects building on Arbitrum. This analysis is the first in a series aimed at providing the community with data and insights to assist with impact measurement and grantmaking.

Some highlights:

1. We are currently tracking over 300 OSS projects and over 13,000 code artifacts that are making an impact on the Arbitrum ecosystem. These artifacts include both GitHub repos (~10,000) and smart contracts deployed on Arbitrum One (~3,000).
2. Approximately 1,800 developers are actively engaged in these projects. This number aligns closely with the latest Electric Capital Developer Report. Our analysis, however, incorporates an additional 94 projects not currently captured in their registry.
3. The number of active developers is 18% lower than the peak of around 2,200 in March 2023. It's important to note, however, that this reduction is primarily concentrated in a few projects rather than a general decline across the ecosystem. In fact, the majority of projects have maintained a stable developer count over the past year.

Open Source Observer is a platform for measuring the impact of open source software (OSS) contributions. We are one of the 24 projects in Octant's Epoch 2 funding allocation.

We used our dataset to take a quick snapshot of the collective impact of Octant's funding on the OSS developer community. In Epoch 2, Octant is helping support:

• 23 projects with at least some OSS component to their work
• 322 GitHub repos with regular activity
• 542 developers making regular code commits or reviews

In the last 6 months, these 23 projects:

• Attracted 556 first-time contributors
• Closed over 5,608 issues (and created 5,962 new ones)
• Merged over 10,817 pull requests (and opened 12,443)