Multiplatform Plutus Script Cost & Evaluation Library (JS/JVM/LLVM)

[GENERAL] Name and surname of main applicant

Alexander Nemish

[GENERAL] Are you delivering this project as an individual or as an entity (whether formally incorporated or not)

Entity (Not Incorporated)

[GENERAL] Please specify how many months you expect your project to last (from 2-12 months)

3

[GENERAL] Please indicate if your proposal has been auto-translated into English from another language.

No

[GENERAL] Summarize your solution to the problem (200-character limit including spaces)

Add Plutus script cost calculation to Scalus. Scalus

Re-organize the project and extract a separate library from it.

Use Scala ability to work on JVM, JS and LLVM platforms.

[GENERAL] Does your project have any dependencies on other organizations, technical or otherwise?

No

[GENERAL] If YES, please describe what the dependency is and why you believe it is essential for your project’s delivery. If NO, please write “No dependencies.”

No dependencies.

[GENERAL] Will your project’s output/s be fully open source?

Yes

[GENERAL] Please provide here more information on the open source status of your project outputs

Fully open source under MIT license

[SOLUTION] Please describe your proposed solution.

Add Plutus script cost calculation to Scalus.

Re-organize the project and extract a separate library from it.

Use Scala ability to work on JVM, JS and LLVM platforms.

Make Java API and export the library to Maven Central.

Make TypeScript API and binding and export the library to NPM.

Make C API headers.

[IMPACT] Please define the positive impact your project will have on the wider Cardano community.

All DApp developers will be able to evaluate their scripts and calculate Tx fees and execution budgets from their JVM and JavaScript code.

On Node.js backend, and in a browser.

Potentiall even on Adnoid and iOS!

That's going to be sensational!

[CAPABILITY & FEASIBILITY] What is your capability to deliver your project with high levels of trust and accountability? How do you intend to validate if your approach is feasible?

I’m a former compiler engineer at IOG, I worked on Marlowe DSL (https://marlowe.iohk.io).

I’m a senior Scala engineer with more than 10 years of Scala development experience with companies like UBS and Deutsche Bank.

I’m already working on Scalus and have visible results. Current version of Scalus 0.3 already works quite well and is able to compile large and complex contracts that work on Testnet and Mainnet.

[Project Milestones] What are the key milestones you need to achieve in order to complete your project successfully?

Add Plutus script cost calculation to Scalus.

Re-organize the project and extract a separate library from it.

Make Java API and export the library to Maven Central.

Make TypeScript API and binding and export the library to NPM.

Adapt code to compile to LLVM via Scala Native.

Make C API headers.

The library is feature complete (Plutus V1 and V2) and documented.

It has Java API. The library jar files are published to Maven Central.

It has TypeScript API binding, and the library is published to NPM.

It has C header files and it can be compiled as a C library.

[RESOURCES] Who is in the project team and what are their roles?

I’m a former compiler engineer at IOG, I worked on Marlowe DSL (https://marlowe.iohk.io).

I’m a senior Scala engineer with more than 10 years of Scala development experience with companies like UBS and Deutsche Bank.

I’m already working on Scalus and have visible results. Current version of Scalus 0.2 already works quite well and is able to compile large and complex contracts that work on Testnet and Mainnet.

[BUDGET & COSTS] Please provide a cost breakdown of the proposed work and resources.

Add Plutus script cost calculation to Scalus. – 160h

Re-organize the project and extract a separate library from it – 40h

Make Java API and export the library to Maven Central – 40 h

Make TypeScript API and binding and export the library to NPM – 40h

Support LLVM platform – 120h

Make C API headers and C library compilation – 40h

Documentation – 40h

Total hours 480h * $80 / 0.3 = 128000

[VALUE FOR MONEY] How does the cost of the project represent value for money for the Cardano ecosystem?

All DApp developers will be able to evaluate their scripts and calculate Tx fees and execution budgets from their JVM and JavaScript code.

That's going to be sensational.

[IMPORTANT NOTE] The Applicant agrees to Fund Rules and also that data in the submission form and other data provided by the project team during the course of the project will be publicly available.

I Accept