- 사용자는 결제, 스테이킹, 거버넌스 및 DApp 상호작용을 위해 Eternl을 사용함 .

- 본 제안은 12개월 동안의 운영, 유지보수 및 개선을 지원하기 위함임 .

- 프론트엔드와 백엔드 유지보수 및 개발, 백엔드 인프라, 사용자 지원 및 일상적인 운영 업무가 포함됨 .

- 에이다가 지속적으로 발전함에 따라 Eternl의 보안, 호환성, 안정성 및 가용성을 유지하는 것이 목표임 .

- 해당 운영에는 연간 약 $0.42M의 비용이 소요됨 .

- ■ 주석 *Non-custodial: 사용자가 자신의 개인 키와 자산을 직접 제어하는 방식 **Staking: 암호화폐를 네트워크에 예치하여 운영에 참여하고 보상을 받는 행위 ***Governance: 블록체인 생태계의 의사결정에 참여하는 체계 ****DApp: 블록체인 기술을 활용하여 중앙 서버 없이 작동하는 탈중앙화 애플리케이션

- 개인용은 연간 $96, 기업용은 연간 $384로 책정되었으며 현재 약 130,000명의 설치 기반을 확보한 상태임 .

- 전체 사용자의 약 4.2%인 5,500명이 Pro 플랜을 구독할 경우 연간 운영비 $420,000를 전액 충당할 수 있음 .

- 시장 상황 악화에 따라 Pro 플랜 수익이 충분해질 때까지의 비용을 충당하기 위해 카르다노 커뮤니티에 ₳1,680,000를 요청함 .

- 요청 예산은 프론트엔드 55%, 백엔드 25%, 관리 14%, 지원 5%, 감사 1% 비율로 배분하여 집행할 계획임 .

- 국고에서 인출한 자금은 전액 스테이블코인으로 전환하여 공개 지갑에 예치하고 누구나 모니터링할 수 있도록 조치함 .

- 매년 12월과 6월에 수익을 평가하여 잉여금이 발생할 경우 국고에서 받은 에이다 가치만큼 전액 상환할 예정임 .

- 상환 완료 후에도 수익이 운영비를 초과할 경우 초과분의 50%를 최대 $210,000 가치의 에이다로 국고에 추가 기부함 .

- 모든 유료 플랜 결제는 온체인 메타데이터로 기록되며 수익 보고서와 상환 트랜잭션 해시를 공개하여 투명성을 유지함 .

- Tastenkunst GmbH가 자금 관리를 담당하며 2026년 8월부터 12개월간 6명의 전일제 인력 운영 비용으로 사용됨 .

- ■ 주석 *Pro plan: 추가 기능과 혜택을 제공하는 유료 구독 서비스 **Stablecoin: 가격 변동성을 최소화하여 가치가 고정된 가상자산 ***On-chain: 블록체인 네트워크에 직접 기록되어 수정이 불가능한 상태 ****Metadata: 데이터의 성격과 속성을 설명하기 위해 부여된 추가 정보 *****Transaction hash: 블록체인에서 거래의 고유 식별 번호 역할을 하는 문자열 ******FTE: 전일제 근무자 한 명의 노동력을 나타내는 단위

- 메인넷 거래의 10-18%를 점유하며 연간 324M 건의 거래 목표 달성에 기여함 .

- 5년 넘게 가동 중단 없이 인프라를 운영하며 독보적인 거버넌스 UI를 제공함 .

- 에이다 가격 하락으로 인해 기존 수수료 수익만으로는 운영비 충당이 불가능함 .

- 안정적인 수익 모델 확보를 위해 유료 플랜 도입과 국고 지원을 요청함 .

- 자금 전환 시 에이다 가격이 0.25달러를 넘으면 초과분은 국고로 반환함 .

- 성능 향상을 위해 코어 코드를 재작성하고 Eternl Hub를 통해 앱 간 연결을 강화함 .

- 블루투스 기반 하드웨어 지갑 지원과 데이터 내보내기 기능을 확장할 예정임 .

- 다중 지역 서버 설정 및 24시간 모니터링을 통해 인프라 회복탄력성을 유지함 .

- Catalyst 및 Intersect를 통해 확보한 자금으로 지속적인 개발을 이어왔음 .

- ■ 주석 *TVL: 총 예치 자산 **KPI: 핵심 성과 지표 ***DRep: 위임 대표 ****CIP: 에이다 개선 제안 *****CBOR: 간결한 이진 객체 직렬화 ******CSL: 에이다 직렬화 라이브러리 *******PWA: 프로그레시브 웹 앱 ********Multisig: 다중 서명 *********Mainnet: 블록체인 네트워크 본체 **********Treasury: 블록체인 운영을 위한 국고 자금

Users rely on Eternl for payments, staking, governance, and DApp interaction.

This proposal enables 12 months of operations, maintenance, and improvements. It includes frontend and backend maintenance and development, backend infrastructure, user support, and day-to-day operations.[^1]

The goal is to keep Eternl secure, compatible, stable, and available as Cardano keeps evolving. This costs around $420,000 per year.

### The Path to Sustainability

Eternl will introduce a Pro plan for personal and company use.

| Plan | Price |
|----------|--------------------------:|
| Personal | $96/year ($8/month) |
| Company | $384/year ($32/month)[^2] |

Eternl has an install base of about 100,000 on the browser extension and about 30,000 across Android and iOS.

If about 4.2% of that install base, or roughly 5,500 users, support Eternl by buying a Pro plan, this income alone would fully cover the annual $420,000 cost.

Since markets are down badly, this proposal helps cover Eternl's costs until income from Pro plan sales is enough to fully replace them.

We will keep a basic version of Eternl free, but aim to make Eternl Pro the best experience for all Ada holders.

[^1]: A more detailed breakdown of what we do can be found at the end of the proposal.
[^2]: Pro Plan prices are not finalized.

### What We Ask From the Cardano Community

**Total:** ₳1,680,000, at about $0.25 per Ada.

| Category | Amount | Share |
|----------|---------:|------:|
| Frontend | ₳924,000 | 55% |
| Backend | ₳420,000 | 25% |
| Support | ₳84,000 | 5% |
| Admin | ₳235,200 | 14% |
| Audits | ₳16,800 | 1% |

### What We Will Do After the Treasury Withdrawal

We will convert the full amount into stablecoins and deposit it into a public company wallet for everyone to monitor.

### Paying It Back to the Treasury

Every December and June, we will assess the following:

1. **Full repayment**

Are the remaining treasury stablecoins plus paid plan income above $420,000? If yes, we will use 100% of the surplus to repay the treasury. We will do this until the full USD value of this proposal, as received from the treasury, has been repaid. This means repaying an amount equal to $420,000 in Ada.

2. **Additional treasury donation**

Has the full $420,000 USD value already been repaid in Ada? And was income from Pro plan sales above $420,000 in the last 12 months?

If yes, we will donate 50% of the income above $420,000 to the treasury. We will do this until an additional $210,000 worth of Ada has been donated to the treasury.

3. **Transparency**

Every paid Pro plan will be recorded on-chain with metadata. We will publish a report on Pro plan earnings. We will also publish the treasury repayment and donation transaction hash.

### Administrative Remarks

Tastenkunst GmbH will be the treasury fund administrator for this proposal. This proposal is not milestone-based. It ensures funds availability for a 12-month period.

## Summary

| Field | Value |
|-------------------|---------------------------------------------------------------------------------|
| Treasury ask | ₳1,680,000, at $0.25 per Ada |
| Delivery period | 12 months |
| Schedule | August 2026 to July 2027 |
| Proposal lead | Marcel Baumberg |
| Submitting entity | Tastenkunst GmbH, Eternl |
| Team | 10 people contribute to Eternl. This proposal funds 6.0 FTE at $70,000 per FTE. |
| Administrator | Tastenkunst GmbH |

Eternl is one of the primary gateways for Cardano's power. Its maintenance and further development assure reliable access to the blockchain.

### Core Cardano KPIs Alignment

| KPI | Alignment | Description |
|----------------------|-----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| TVL | partially | DeFi users often manage their positions through Eternl. Providing them with reliable access to their daily business indirectly enhances TVL. |
| Monthly transactions | partially | 10-18% of transactions on Mainnet are conducted via Eternl. The Cardano Vision 2030 proclaims a 324M annual transaction goal. Eternl does its part to reach that goal. |
| Active Wallets (MAU) | partially | Eternl supports 66 languages and is available on numerous mobile and desktop platforms. New users can start their Cardano journey on reliable infrastructure. |

### Pillars

| Pillar | Alignment | Description |
|-------------------------------------------------|----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Pillar 1: Infrastructure & Research Excellence | partially | Resilient and reliable access to Cardano, independent of FE or VC influence, is crucial. Eternl has provided this access across several platforms with basically zero downtime for over 5 years. |
| Pillar 2: Adoption & Utility | partially | Eternl provides a vast feature set for power users and newcomers alike, enabling all possible protocol and smart contract interactions. |
| Pillar 3: Governance | partially | Eternl provides independent in-app governance tools that let DReps vote directly on proposals. Ada holders can browse active proposals and see how DReps have voted. It is currently the only wallet offering a comprehensive governance UI. Btw. This proposal was completely created and posted in the upcoming Eternl version with governance enhancements. |
| Pillar 4: Community & Ecosystem Growth | partially | We believe that Eternl is the wallet of choice for many developers building on Cardano. We will continue building out the developer tools in the app. |
| Pillar 5: Ecosystem Sustainability & Resilience | Not applicable | - |

## FAQ

1. **Will you be voting on your own proposal?**

Yes. Our delegates certainly expect Eternl to be available in the future.

2. **What income streams do you have?**

Eternl charges a small service fee on transactions of 100 Ada or above in its DApp Browser and the MonsterSwap feature. In the current low-volume, low-price environment, those fees have been insufficient to cover costs, which is why we need to introduce paid plans as a more reliable source of income.

3. **Why didn't you introduce paid plans earlier?**

We had hoped for a stronger market and for the Ada price to stay above $0.50, but that didn't happen. Our goal was to earn enough in service fees to be sustainable and to provide all Eternl features and updates for free to all users.

4. **Will the service fees or Tastenkunst's other income streams be taken into account when calculating the treasury payback?**

No. The service fees cover rent for our small office, accounting costs, legal costs, and other expenses, such as software licenses.

5. **Will Eternl be open-source?**

The main UI will not be open-source. We will publish some libraries that we use in Eternl via the npm registry:

6. **If the Ada price is above $0,25 when you convert the funds, what will you do?**

We will only keep $420,000 in stablecoins; the remaining Ada will be returned to the treasury.

7. **Eternl got Treasury funds in the last budget process. How did that go?**

In the 2025 budget process, we requested ₳583,000 ($408,000) for 12 months of operations. We valued Ada at $0,70 in last year’s proposal.

Due to the Ada price decrease, we have not received the expected amount; to date, we are about $133,000 short of the proposed amount. That’s the main reason we have to submit this proposal to ensure continuity for the team as we introduce the long-planned Pro mode.

8. **What will happen if Eternl does not get treasury funds?**

Paid plans will help us understand whether Eternl can become self-sustaining under current market conditions. If we do not sell enough licenses beyond August, we will have to let go of our developers, scale Eternl down to essential maintenance, and shift our focus to work outside the Cardano ecosystem.

We want to keep Eternl available. But without enough funding, we may have to remove the free option and focus on users who support Eternl with paid licenses. This would mean a smaller team, fewer resources, and less resilient infrastructure. As a result, new features and support may be affected.

## What's Coming Up for Eternl in the Coming Months?

### Eternl Core

A complete rewrite of Eternl's core, which has been in development for a few months. We implemented our own CBOR library in TypeScript, to be published under BUSL-1.1 later this year, and replaced CSL across the entire codebase. Faster transaction building and more flexibility for future feature additions. This also means a snappier interface and better loading times.

### Eternl Hub

Safely connect any Eternl app to any other Eternl app, e.g., an extension to a mobile app, or to devices of family or coworkers. Share wallets and settings. Even share wallets temporarily. Users can forward signing requests, e.g., create a transaction on the extension and sign it on a mobile device, or vice versa. We have many more features planned for Hub, like better DApp connections, and for that, we will introduce a CIP and make Eternl Hub open-source.

### Enhanced Hardware Wallet Support

We will add more hardware wallet providers, enabling them to add fully featured Cardano support on their devices. Additionally, Eternl mobile apps will support Bluetooth connections and gain support for Ledger, OneKey, and Trezor, coming in v2.1.

### Enhanced Wallet Data Export

Create entities, e.g., companies or individuals, and export data that combines all entities' accounts into a single view, saving hours of manual processing of intra-entity transactions.

## Maintenance and Continued Development

### Backend Infrastructure & Operations

- Resilient multi-region server setup
- Cardano node operation, including Hardfork upgrades
- Chain indexers (DBSync) on PostgreSQL
- Application servers for syncing, translations, stakepool data, governance data, smart contract data, scam token registry, and transaction submission endpoints
- Metadata aggregation for assets, governance, and pools across multiple data sources
- Backend services for upcoming Eternl Hub features
- 24/7 monitoring, alerting, and incident response across multiple servers

### Frontend Maintenance & Cross-Platform Development

- Cross-platform shipping: Chrome extension, Web App/PWA, iOS, Android, plus a public beta channel
- Continuous security-critical upgrades
- CIP implementation as new standards emerge: dApp connector (CIP-30), NFT standards, new connection types, L2 support in the future
- Implementation and testing of new Hardfork features. Especially fundamental changes coming up with Dijkstra and Leios.
- Multisig wallet creation, configuration, and signing flows, transaction sharing
- dApp interoperability across the broader Cardano dApp ecosystem
- App Store and Play Store compliance, especially Apple's review cycles
- Hardware wallet support: Ledger, Trezor, OneKey, Keystone, more coming, tracking firmware updates from each vendor
- Bluetooth hardware wallet support, with mobile Bluetooth expansion in progress

### Enhancing Governance Tooling

- DRep dashboards and proposal browsers
- Enhancing in-wallet voting on governance actions
- Ongoing expansion of voter and DRep tooling, e.g., creating governance proposals directly in Eternl

### User Support

- Discord-based ticketing as the primary channel, plus a maintained Telegram channel
- Bug triage and direct assistance are handled by the development team
- Community-supported help in public channels
- 1-on-1 support channels with many ecosystem projects
- Maintenance and enhancement of the Eternl Wiki through adding to the knowledge base and producing short educational videos

### Day-to-Day Operations

- Release management across all distribution channels
- Coordination with hardware wallet vendors, dApp developers, and CIP authors
- Internal code review and ongoing security practices

## History of Catalyst Grants and Treasury Grants

### Catalyst

1. #900103 - "Enable Eternl" (Fund 9) - $90,000
2. #900102 - "Evolve Eternl" (Fund 9) - $90,000
3. #900203 - "Translate Eternl" (Fund 9) - $46,000
4. #1000157 - "Enable Eternl - F10" (Fund 10) - ₳554,000
5. #1000081 - "Eternl - Accessible Multi-sig - F10" (Fund 10) - ₳69,200
6. #1000197 - "Cardano knowledge base - F10" (Fund 10) - ₳20,800

### Intersect

1. "Update Eternl to implement CIP-95" - ₳70,000

### Treasury Withdrawal

Tastenkunst GmbH was the recipient of treasury funds from the 2025 budget process. The funding period for this proposal ends in July 2026.

1. "Withdraw ₳583,000 for Eternl Maintenance administered by Intersect"