QMDB Core Integration for the proof storage engine within Substrate

[BNKSYSA]

Project Abstract

This project focuses on the QMDB integration as the proof storage engine within Substrate, specifically implementing core storage functionality without iterators and prefixes with limited support or non-optimal support.

Grant level

• Level 1: Up to $10,000, 2 approvals
• Level 2: Up to $30,000, 3 approvals
• Level 3: Unlimited, 5 approvals (for >$100k: Web3 Foundation Council approval)

Application Checklist

• The application template has been copied and aptly renamed (QF_QMDB-substrate-part1.md).
• I have read the application guidelines.
• Payment details have been provided (Polkadot AssetHub (USDC & DOT) address in the application and bank details via email, if applicable).
• I understand that an agreed upon percentage of each milestone will be paid in vested DOT, to the Polkadot address listed in the application.
• I am aware that, in order to receive a grant, I (and the entity I represent) have to successfully complete a KYC/KYB check.
• The software delivered for this grant will be released under an open-source license specified in the application.
• The initial PR contains only one commit (squash and force-push if needed).
• The grant will only be announced once the first milestone has been accepted (see the announcement guidelines).
• I prefer the discussion of this application to take place in a private Element/Matrix channel. My username is: @sergecher:matrix.org (change the homeserver if you use a different one)

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[BNKSYSA]

I have read and hereby sign the Contributor License Agreement.

[BNKSYSA]

@semuelle hi, could you please help with the failing check - Enforce PR labels?

[keeganquigley]

Thanks for the application @BNKSYSA don't worry about the failed checks, we will take care of them. Out of curiosity, have you discussed any of these findings or hypothesis with the W3F research team? As there are currently multiple teams working on storage solutions. If I understand correctly, this research would only apply to parachains and not the relay chain?

Additionally, the PolkaHub project you mentioned seems to have not been maintained over the last five years, and the website is down. Has your team been active in Polkadot as of late?

I noticed that the litepaper is pretty outdated in some parts. For example, the links in the SDK section: Chainsafe's MetaMask snap for Polkadot has been sunsetted and the repo is now archived. Polkascan.org was also discontinued as of March 2024. There are also multiple API alternatives to polkadot.js now such as PAPI and Dedot. I'd suggest giving the paper an update.

Let me know if you're able to provide any additional details here and have a great weekend.

[BNKSYSA]

Thank you @keeganquigley for your questions and comments on the application. I apologize, we had some internal team misalignment regarding this submission. We'll withdraw the application for now and return with it later.