Polkadot Developers Conference // sub0 is the conference for developers building at every level of the Polkadot tech stack — from custom layer-1 blockchains to dApps and smart contracts, infrastructure, tooling, cross-chain interoperability solutions, and more.

In 2023 sub0 will return to Lisbon and is seeking funding from Polkadot Treasury. The last edition took place in LX-Factory in Lisbon on November 28th and 29th, 2022, Web3 Foundation, together with the teams of Apillon, Phala Network, Astar Network and Manta Network in representation of the entire Polkadot ecosystem brought together the global Polkadot developer community.

Sub0 will again provide an open introduction to next-generation multichain networks, as well as a chance for existing Polkadot and Substrate developers to deepen their skills and connect with each other. For this year's edition we want 50% of our audience to be new developers from outside of our ecosystem. This includes people who are not building on Substrate but are curious to learn more. By opening our doors to developers who are not (or only slightly) familiar with our tech, we can bring in more potential builders and expand our market reach and visibility. 

THIS IS THE FUNDING REQUEST FOR MILESTONE 1 AS PER THE BUDGET DETAILED IN THE DOC BELOW.

Further information on the proposal, including milestones, budget, agenda, participants and more can be found on [THIS LINK](https://docs.google.com/document/d/11eaFr7OlOGOIQpskRopBUR_KizmHRmd3U-QRmcyA_g0/edit?usp=sharing)!

Send a batch of dispatch calls.

May be called from any origin.

- `calls`: The calls to be dispatched from the same origin. The number of call must not
  exceed the constant: `batched_calls_limit` (available in constant metadata).

If origin is root then call are dispatch without checking origin filter. (This includes
bypassing `frame_system::Config::BaseCallFilter`).

# <weight>
- Complexity: O(C) where C is the number of calls to be batched.
# </weight>

This will return `Ok` in all circumstances. To determine the success of the batch, an
event is deposited. If a call failed and the batch was interrupted, then the
`BatchInterrupted` event is deposited, along with the number of successful calls made
and the error of the failed call. If all were successful, then the `BatchCompleted`
event is deposited.

Problem Statement:
- Funding is needed from the Polkadot Treasury to support the sub0 conference in 2023.

Significance:
- sub0 is a conference for developers building on the Polkadot tech stack, providing an opportunity for skill development and networking.
- The conference aims to attract new developers from outside the Polkadot ecosystem to expand market reach and visibility.

Proposed Solution:
- Requesting funding from the Polkadot Treasury for Milestone 1 of the conference.

Expected Outcomes:
- Successful organization of the sub0 conference in Lisbon in 2023.

#138 Polkadot Developers Conference // sub0 Europe // Milestone 1