- A new data structure called Merkle Mountain Belt (MMB) is proposed to improve blockchain efficiency.  
- MMB helps save money (around $1 million per year) for Polkadot users, especially in bridges.  
- It works better than older structures for recent data (1 minute to 1 day old).  
- The team will make a research paper and a Rust library by June 2026.  
- Funding requested: $340,198 upfront, plus extra DOT if savings exceed costs.  
- The team includes experts with Polkadot experience.  
- Changes from the last proposal include lower costs and simpler goals.  
- More details are available in links provided.

Merkle Mountain Belt (MMB)

This proposal asks for funding to improve Polkadot-API, a tool for building apps on Polkadot.

*   It will add new features to the main Polkadot-API library.
*   It will update a related software kit (SDK) to keep it working well.
*   It will make a developer tool called PAPI Console better and easier to use.
*   It will help improve the technical rules (specifications) that apps use to talk to the network.

The team is asking for **76,380 €** to do this work.

Polkadot-API: Additional Feature Development through Polkadot Community Foundation

OpenSquare is a team that makes tools for Polkadot to help people use it better. They have four main tools: Subsquare, Statescan, Dotreasury, and Off-Chain Voting. They are asking for support to keep their work going in 2026.

Here’s what they plan to do:
- **Keep everything running:** They will pay for servers and other services, which costs about $468 each month.
- **Maintain their tools:** They fix bugs, update the tools, and help users with questions.
- **Add new features:** They want to make Subsquare better by showing how votes change, adding translations, and helping with treasury projects.
- **Improve other tools:** They will update Statescan to show staking info and add new voting options to Off-Chain Voting.

This support will help OpenSquare continue making Polkadot easier and more fun for everyone to use!

OpenSquare products maintenance and development funding for 2026

- Subscan is asking for money to keep their website working for five Polkadot test networks.
- They want $21,690 to pay for six months of work from July to December 2025.
- This is less money than before because they are giving a 40% discount while they make their systems better.
- The money pays for important jobs like fixing the website after updates and watching the networks to make sure they run smoothly.
- Subscan knows that the Westend network might be replaced soon. They ask the community to say if they should keep supporting it and for how long.
- They plan to charge even less money starting in 2026 after they finish their improvements.
- This request is only for basic maintenance work and does not include making any new features.

[Westend] Subscan 2025 Q3-Q4 Funding Proposal: Basic service fee for the Westend Relaychain and Westend public parachain (AssetHub, Coretime, BridgeHub, People)

- I hosted 6 live streams for Polkadot to help new builders.
- I did this on my own time, not as part of my other work.
- The streams shared tips from experienced builders.
- My job was to ask questions and explain things simply.
- This showed people want easy-to-understand developer content.
- I'm asking to be paid for the time I spent on this project.
- If people like it, I can plan to do more streams in the future.

(Updated) Tip Request for “LIVE HACKS” Developer Livestream Pilot

- Polkadot-API is a tool for developers.
- This proposal asks for money to keep it running for one year.
- The team will fix problems and make sure it works well.
- They have made new features and demos, like a Staking Optimizer.
- They are asking for less money now to fit the budget better.
- If approved, they will get paid each month for their work.
- Extra money is set aside for legal costs, and leftovers go back to the treasury.

Polkadot-API maintenance funding March 2026 - February 2027 through Polkadot Community Foundation

- **Who:** Ross Bulat and Joel Kenny are working on this project.
- **What:** They want to build a Polkadot Staking Dashboard.
- **Goal:** To help people understand and use the Polkadot staking system.
- **How Much:** They are asking for $66,000.
- **How Long:** The project will last for 6 months.
- **Why:** To keep the dashboard updated and ready for new changes in Polkadot.
- **Where:** More details are in their online document.

Polkadot Staking Dashboard: Protocol-Aligned Development

ReactiveDOT is a tool that helps developers build apps for Polkadot.

*   It makes building apps easier and faster.
*   It helps developers connect their apps to Polkadot.
*   It is used by many other projects.
*   The creator wants to keep improving it.
*   They will focus on teaching others how to use it.
*   They will fix problems and answer questions.
*   They are asking for funding for 3 months of work.
*   The goal is to help more people build on Polkadot.

Funding for ReactiveDOT & related developments

- This proposal fixes a payment that was already approved
- The original payment was for important NFT work
- A computer error stopped the payment from going through
- The error happened during a system upgrade
- The money amount is $180,000
- Experts have checked and confirmed the solution
- This just makes the original decision work correctly
- No changes were made to what was originally approved

Ratify Approved Referendum #1768 - execution error due to AH migration

- RegionX Hub is the main app for Polkadot's Coretime model
- It helps users easily manage and use Coretime
- They built the first trustless secondary Coretime marketplace on Kusama
- The team works hard to make the app simple and easy to understand
- They updated the app with new features and improvements
- The team lowered their pay to keep the project going
- RegionX Hub is important for the Polkadot community
- Anyone can now help add features to the app

RegionX Hub: Final Funding Request (Retroactive Work, Key Features, Maintenance)

- Polkawatch helps make Polkadot more decentralized.
- They released new tools to improve data sharing.
- Polkadot is now one of the most decentralized blockchains.
- Their data is used by apps and gets 100,000 requests each month.
- It costs about $3,000 per month to run Polkawatch.
- This equals about $1.50 per user each year.
- They are asking for funding to keep working in 2025.
- They plan to update for Polkadot 2.0.

[USDC Resubmission] Polkawatch, Decentralization Analytics, Infrastructure and Maintenance 2025

- SubWallet is a wallet for Polkadot and Kusama.
- It works on browsers, phones, and the web.
- It has over 1 million users and supports 150+ networks.
- New features include easier swaps and staking.
- The team is asking for $795,500 from the Polkadot Treasury.
- This money is for work already done from August 2024 to March 2025.
- They lowered the budget based on community feedback.
- SubWallet helps make the Polkadot ecosystem better for everyone.

[Retroactive] SubWallet Development from August 2024 to March 2025

- Polkadot wants to sponsor 40 developers and community members to attend a conference in Buenos Aires.
- It will help pay for travel and hotel costs.
- People from all over the world can apply, like from the Americas, Asia, Africa, and Europe.
- To apply, you need to share what you’ve done for Polkadot and why you want to go.
- A team will pick people based on their work and how active they are.
- The goal is to help people learn, share ideas, and feel part of the community.
- If there is extra money, it will go back to Polkadot’s treasury.

Sponsorship for active devs and community members during Polkadot Symbiosis in Buenos Aires

Subscan is a tool that helps people see and understand information on the Polkadot blockchain.

- It shows data like transactions, accounts, and network activity.
- Subscan is asking for money to keep running and improving.
- The money will pay for servers, storage, and developers.
- They support 10 different Polkadot and test networks.
- They fixed bugs and added new features.
- They removed ads to make the website better for users.
- The total amount requested is $184,665.
- This helps developers, validators, and users use Polkadot easily.

Subscan Q4 2024 – Q2 2025 Funding Proposal: Basic Service Fee & Development Cost for the Polkadot and Westend Ecosystems

- A group called JUST Ventures is asking for money from Polkadot for work they did from January to June 2025.  
- They helped with governance, technical support, and community projects.  
- They worked on things like upgrades, bounties, and improving how Polkadot works.  
- They also helped with education and events, like the Polkadot Blockchain Academy.  
- They are asking for $149,908.38 in USDC (a stablecoin).  
- This is their third request, and the past two were approved.  
- They shared a public list of their work so people can see what they did.  
- They believe this funding model is fair because their work is hard to plan in advance.

JUST Retroactive Compensation 3.0

- Nova Wallet is a popular app for Polkadot, with 100+ networks.  
- It helps users stake, swap, and vote easily.  
- Over 13 million DOT is staked through Nova Wallet.  
- It adds new features like 1-click swaps and multisig wallets.  
- Nova Wallet is open-source and free for users.  
- The team also builds other tools for Polkadot.  
- This proposal asks for funding for past 7 months of work.  
- Users can test features before voting on the proposal.

Nova Wallet 7th Proposal: Retroactive Reimbursement: 1-Click Cross-Chain Swaps, Multisigs, Extended Ledger Support, Polkadot Vault v7.0 Support, Unified Address Format, Off-Ramps, Price Charts, DApp Browser Improvements, and more!

- Gossamer is changing its focus to help Polkadot-SDK instead of making a new client  
- They want $815,358 USDC split into 3 payments over 6 months  
- Will work on 7 important tech areas with Parity  
- Team has experience from past Polkadot projects  
- Updates will be shared monthly on GitHub and social media  
- Contact info provided for questions  
- Full details in their online document

Treasury Spends