AdaStream - Decentralized File Hosting Incentivised via Ada Payments

[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)

6

[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)

AdaStream implements an atomic swap of tokens for files.

[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

MIT or Apache license

[SOLUTION] Please describe your proposed solution.

I want to implement Bitstream protocol buy on Cardano: https://robinlinus.com/bitstream.pdf

I have a working prototype here: https://github.com/nau/adastream

An atomic swap of coins for files would enable an open market for content hosting, in which anyone can monetize their excess bandwidth and data storage capacities, by serving decentralized multimedia services.

Verifiable encryption provides a theoretical solution, but the computational overhead is too expensive in practice.

We propose a solution to the fair exchange problem, which is highly efficient such that servers can handle large files and manage many clients simultanously.

Compatible payment methods include Cardano, Lightning, Ecash, and every other system that supports hash-timelock contracts.

The server encrypts the file such that if there’s any mismatch during decryption the client can derive a compact fraud proof. A bond contract guarantees the client receives the exact file or they can punish the server. The transfer happens fully off-chain. An on-chain transaction is required only in case a server cheated.

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

Well, it's an actually usefull DApp, that can and likely will be used by Nostr and others.

[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).

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

AdaStream Encryption server, REST API

AdaStream client JavaScript library

Tests for Bond and HTLC contracts

Cardano Node integration

Testnet launch, documentation

AdaStream Encryption server, REST API

AdaStream client JavaScript library

Working and tested Bond and HTLC contracts

Cardano Node integration

Testnet launch, documentation

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

The main proposer, Alexander Nemish will be actively working on the proposal.

I am considering hiring another Scala engineer to help make the project sooner.

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.

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

AdaStream Encryption server, REST API – 160h

AdaStream client JavaScript library – 160h

Working and tested Bond and HTLC contracts 1 – 160h

Cardano Node integration – 160h

Testnet launch, documentation – 160

Testing, debugging, contingency budget – 160h

160h*6m*$75/$0.24 = 300,000

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

Totally worth it.

[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