# Building Together — Final Program Report

**URL:** <https://forum.arbitrum.foundation/t/building-together-final-program-report/31477>\
**Category:** Domain Allocator Offerings (prev Questbook)\
**Tags:** proposal\
**Created:** [September 16, 2026, 3:07am UTC](https://forum.arbitrum.foundation/t/building-together-final-program-report/31477 "2026-09-16T03:07:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![VividSummit66](https://avatars.discourse-cdn.com/v4/letter/v/df705f/32.png) [@VividSummit66](https://forum.arbitrum.foundation/u/VividSummit66)\
**Post date:** [September 16, 2026, 3:07am UTC](https://forum.arbitrum.foundation/t/building-together-final-program-report/31477/1 "2026-09-16T03:07:55Z")

</div>

Hi everyone!

We’re sharing the final report for **Building Together** , a program organized by Ethereum Lima with the support of Arbitrum. This report consolidates the results, evidence and learnings from all seven milestones and marks the formal completion of the grant.

From university outreach and technical training to project development, community validation and awards, the program created a connected path for participants to discover the ecosystem, learn, build and continue engaging with Arbitrum.

**Organizer:** Ethereum Lima

**Reporting cut-off:** 15 September 2026

**Approved grant:** USD 14,288

* * *

## 1. Executive Summary

**Building Together** connected university outreach, technical education, project development and community validation through a coordinated program focused on Ethereum and Arbitrum.

**Puqi Route 2026** introduced students with little or no prior crypto experience to the ecosystem through in-person educational events at higher education institutions across Lima. Sessions combined Arbitrum branding, an Ideathon format and activities with university communities.

**Bootcamp “La Siembra”** provided six weeks of technical preparation for Spanish-speaking developers. Its curriculum combined blockchain fundamentals, Solidity, Rust, Foundry, Hardhat and Arbitrum Stylus, supported by recorded sessions, practical exercises and technical guidance. The Bootcamp reported **211 registrations** and **12 teams formed** for the following phase.

The **Ethereum Lima Hackathon** extended the building experience through virtual workshops, mentorship and project development, with an in-person Demo Day. It reported **268 participants from nine countries** and **50 projects**.

The Arbitrum activation corresponding to **Milestone 2** was integrated into **Build & Explore** , connecting ecosystem discovery with project demonstrations and community feedback. The experience reported **226 attendees** and **343 feedback interactions**. Following evaluation, **2,100 USDC** was distributed across five awards.

| **Indicator** | **Original Target** | **Achieved** | **Performance** |
| --- | --- | --- | --- |
| Ruta de Puqi attendees | 200+ | **227** | **114%** |
| Institutions reached | 4 | **7** | **175%** |
| Build & Explore attendees | 100+ | **226** | **226%** |
| Hackathon participants | 90+ | **268** | **298%** |
| Innovative projects / dApps | 25+ reference | **50** | **200%** |
| Projects building on Arbitrum | 10+ | **50** | **500%+** |
| Prizes | USD 2,100 | **USD 2,100** | **100%** |

* * *

# 2. From Proposal to Final Execution

The core objectives of the grant remained unchanged, while the delivery format evolved to provide participants with more time to learn, build and validate their projects.

| **Component** | **Original Proposal** | **Final Execution** |
| --- | --- | --- |
| University outreach | Ruta de Puqi across 4 universities | Expanded university/institutional outreach |
| Bootcamp | 18 immersive hours | **6-week technical learning process** |
| Hackathon | 2.5-day onchain Hackathon | **18-day extended builder program with a strong virtual component** |
| Milestone 2 activation | Separate Ethereum Lima Day workshop / activation | **Integrated into the in-person Hackathon Demo Day** |
| Project validation | Final presentations | **Mentorship + community feedback + formal evaluation** |
| Geographic reach | Primarily Lima / in-person | **Participation from 9 countries** |

* * *

# 3. What the Program Delivered

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/arbitrum1/original/3X/2/b/2b1255fc7ae14fec84cb276bd8d5dfeaae536c2d.png)

## 3.1 Outreach & Onboarding

### La Ruta de Puqi

**Related milestones: M0 + M1**

The program began through university outreach, created accessible entry points into blockchain, Ethereum and Web3, bringing the ecosystem closer to students and new participants before inviting them into more technical experiences. The outreach stage established the top of the participant pipeline and connected university audiences with the activities that followed.

#### Results

| **Indicator** | **Target** | **Achieved** |
| --- | --- | --- |
| Attendees | 200+ | **227** |
| Universities / institutions | 4 | **7** |

#### Evidence

[Milestone 1 — Ruta de Puqi Report](https://ethlima.notion.site/Milestone1-Reporte-39e4ff27f2ab80688a66f8f21b0613a7)

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/arbitrum1/original/3X/a/c/ac36ceab7012b4ea099789ab15fda3388fef0135.jpeg)

## 3.2 Technical Preparation

### Bootcamp — La Siembra

**Related milestone: M3**

The Bootcamp moved participants from ecosystem discovery toward technical practice, the final implementation extended the learning period and included blockchain fundamentals, Solidity, Rust, Arbitrum Stylus, Foundry, Hardhat, Scaffold-Stylus and project development. The Bootcamp created the technical foundation for participants who wanted to continue building within the ecosystem.

### Results

| **Indicator** | **Original Reference** | **Achieved** |
| --- | --- | --- |
| Registrations | 100 | **211** |
| Participants with tracked technical deliverables | 50 reference | **46** |
| Project teams | 5–10 | **12** |
| Technical modules | 4 | **4 / 4** |
| Program duration | 18 hours originally proposed | **6 weeks** |

### Evidence

[Milestone 3 — Bootcamp Report](https://ethlima.notion.site/Milestone-3-Report-3a94ff27f2ab804f9972f3d9e0c05461)

[Ethereum Lima Virtual Campus](https://campus.ethlima.org/)

## 3.3 Building

### Ethereum Lima Hackathon

**Related milestone: M4**

The Hackathon became the main project-development stage. Instead of concentrating the experience into a 2.5-day event, the implemented format ran for **18 days** , with much of the building process happening virtually.

This allowed participants to access technical training, product sessions, mentoring, project development, team support, checkpoints, an in-person Demo Day, evaluation and final results.

### Results

| **Indicator** | **Target / Reference** | **Achieved** | **Performance** |
| --- | --- | --- | --- |
| Participants | 90+ | **268** | **298%** |
| Projects / dApps | 25+ | **50** | **200%** |
| Projects building on Arbitrum | 10+ | **50** | **500%+** |
| Mentors | 5 reference | **15** | **300%** |
| Countries | — | **9** | — |
| Workshops | — | **8** | — |
| Program duration | 2.5 days originally proposed | **18 days** | Expanded |

The extended format increased access beyond Lima and provided teams with more time to develop, iterate and receive support before final evaluation.

### Evidence

[Milestone 4 — Ethereum Lima Hackathon Report](https://ethlima.notion.site/Milestone-4-report-3d74ff27f2ab800d8717f18bf410b497)

[Ethereum Lima YouTube](https://www.youtube.com/@ethereumlima780)

## 3.4 Explore & Validate

### Build & Explore — Hackathon Demo Day

**Related milestone: M2 + M4**

Milestone 2 was initially proposed as a separate workshop and activation introducing participants to Arbitrum. In the final implementation, the in-person experience was integrated into the **Hackathon Demo Day**. This created a stronger connection between ecosystem education and real products already being built.

Participants could: **Explore → interact → understand → give feedback** rather than only attend an introductory session.

### Results

| **Indicator** | **Target** | **Achieved** |
| --- | --- | --- |
| Activation attendees | 100+ | **226** |
| Builders involved | — | **228** |
| Projects showcased | — | **49** |
| Projects showcased on Arbitrum | — | **49** |
| Feedback interactions | — | **343** |
| Communities involved | — | **8** |
| Speakers | — | **7** |
| Registrations attributed to activation | — | **53** |

### Evidence

[Milestone 2 — Build & Explore Report](https://ethlima.notion.site/Milestone-2-Report-3ba4ff27f2ab80e1bfe7c9efb68b123f)

[Hackathon Report](https://ethlima.notion.site/Milestone-4-report-3d74ff27f2ab800d8717f18bf410b497)

## 3.5 Evaluate & Reward

### Evaluation, Winners & Prize Distribution

**Related milestones: M4 + M5**

After Demo Day and community feedback, projects moved into formal evaluation.

The evaluation framework balanced:

> **50% Product / 50% Technical**

This allowed projects to be assessed not only on technical implementation, but also on problem definition, value proposition, product development and communication.

### Evaluation

| **Indicator** | **Result** |
| --- | --- |
| Projects evaluated | **50** |
| Judges | **9** |
| Evaluation period | **12–16 August 2026** |
| Final results | **17 August 2026** |

### Prize Distribution

| **Indicator** | **Target** | **Achieved** |
| --- | --- | --- |
| Prize pool | USD 2,100 | **USD 2,100** |
| Prize distribution | Required | **Completed** |
| Public winner announcement | Required | **Completed** |

The original grant allocated **USD 2,100** to the Hackathon prize component.

### Evidence

**Milestone 5 — Winners & Prize Distribution**

[View full report](https://app.notion.com/p/3dc4ff27f2ab80109bccce17fd421242?pvs=21)

**Hackathon Winners — Public Video**

[Watch announcement](https://www.youtube.com/watch?v=7RdzA-N8MwY&t=1396s)

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/arbitrum1/original/3X/f/6/f692e685a811746536fe8eb4cc62c952a2591213.jpeg)

* * *

# 4. Grant Closeout

The grant was approved through **seven milestones**. The table below reconciles the contractual structure with the final delivery.

| **Milestone** | **Approved Commitment** | **Final Delivery** | **Status** |
| --- | --- | --- | --- |
| **M0** | Operational support for merchandise, Ruta de Puqi, coffee breaks and raffles | Resources used to support outreach execution | ✅ Completed |
| **M1** | 200+ attendees across 4 universities | **227 attendees across 7 institutions** | ✅ Exceeded |
| **M2** | Arbitrum workshop / activation with 100+ attendees | Integrated into Demo Day; **226 attendees** , 49 projects showcased and 343 feedback interactions | ✅ Exceeded |
| **M3** | Bootcamp execution | **211 registrations, 46 participants with tracked technical deliverables, 12 teams** | ✅ Completed |
| **M4** | Hackathon with 90+ participants | **268 participants, 50 projects, 15 mentors, 9 countries** | ✅ Exceeded |
| **M5** | USD 2,100 prize payments | **USD 2,100 prize pool delivered** | ✅ Completed |
| **M6** | Final report + onboarding / volunteer compensation | Final reporting and grant closeout | ✅ Completed |

The milestone amounts and original deliverables are documented in the approved application.

* * *

# 5. Key Learnings

### 1. Longer building periods created stronger continuity

Extending the Hackathon beyond a short in-person format provided teams with more time for learning, mentorship and iteration.

### 2. Reach and technical progression need different metrics

Registrations are useful for measuring reach, but technical deliverables and project teams provide a stronger indicator of actual builder participation.

### 3. Demo Day worked better as part of the builder process

Integrating Explore & Learn into the Hackathon Demo Day connected Arbitrum onboarding with real projects rather than treating the activation as an isolated event.

### 4. Community feedback added a new validation layer

The **343 feedback interactions** complemented mentorship and judging with direct community input.

### 5. A local program can create regional participation

The extended virtual format helped the Hackathon reach builders from **9 countries** , expanding the program beyond its original Lima-based scope.

* * *

# 6. Continuity Beyond the Grant

The program generated more than attendance: it created **learning opportunities, teams, projects, feedback, mentorship and a continuing builder network around Arbitrum**.

> **From outreach to builders. From builders to projects. From projects to continued ecosystem participation.**

The original sustainability plan contemplated continued training, future Hackathons and bounties, university collaborations, developer follow-up and the Ethereum Lima Virtual Campus.

That infrastructure continues beyond the formal grant period.

Current continuity mechanisms include:

- builder and team follow-up;

- continued technical and community activities;

- educational resources through the Virtual Campus;

- university relationships for future onboarding;

- public technical documentation and recordings;

- visibility and ecosystem opportunities for participating teams.

Ethereum Lima continues supporting participating teams and sharing educational content, community updates, builder achievements and participation opportunities through its communication channels. Future follow-up should track active teams, repository updates, verified deployments and recurring participation to assess continuity beyond the program.

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/arbitrum1/original/3X/0/2/028d34b6c17d9324ae6e1f9a838155094bc3d48f.jpeg)

### Ongoing Resources

[Ethereum Lima Virtual Campus](https://campus.ethlima.org/)

[Ethereum Lima YouTube](https://www.youtube.com/@ethereumlima780)

[Ethereum Lima Website](https://ethlima.org/)

[Ethereum Lima — Instagram](https://www.instagram.com/ethereumlima/)

[Ethereum Lima — LinkedIn](https://www.linkedin.com/company/ethereum-lima)

[Ethereum Lima — X](https://x.com/EthereumLima)

**The funded program concluded. The builder pipeline continues.**

* * *

# 7. Closing Assessment

Building Together established a connected route through which participants could move from ecosystem discovery into technical learning, project development, public validation, evaluation and continued participation.

All seven milestones have been completed. The funded program is now closed, while the builder network, educational resources and community support continue.

Thank you to Arbitrum and to every institution, community, speaker, mentor, judge and participant who was part of this process.

**Ethereum Lima Team**

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<div class="post-metadata">

**Author:** ![MconnectDAO](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.arbitrum.foundation/mconnectdao/32/16356_2.png) [@MconnectDAO](https://forum.arbitrum.foundation/u/MconnectDAO)\
**Post date:** [September 16, 2026, 3:53am UTC](https://forum.arbitrum.foundation/t/building-together-final-program-report/31477/2 "2026-09-16T03:53:49Z")

</div>

This is a very good initiative. University and school level programs like this are important for bringing more young people into the Web3 ecosystem.

The results are also strong: the program reached 227 attendees across 7 institutions, received 211 Bootcamp registrations, formed 12 teams, and engaged 268 Hackathon participants from 9 countries. It also produced 50 projects built on Arbitrum, with 49 projects showcased during Demo Day.

Could the team please share a country wise participant breakdown? I would be interested to know whether students or builders from Asia, especially India, participated in the program. It would also be useful to see follow up data on active teams, live deployments, repository activity, and continued Arbitrum ecosystem engagement after the program.

Congratulations to the Ethereum Lima team for this strong effort. @VividSummit66