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. During this event, which took place in LX-Factory in Lisbon on September 19th and 20th, 2023, the event brought together the global Polkadot developer community. 

Sub0 provided 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. Separate content for experienced devs and those new to the ecosystem was made available. Each attendee could follow their own path by attending more intimate talks and workshops in the Starter and Builder spaces. Those who are new could learn about the Polkadot tech stack, Substrate, Web3, blockchain and walk away with a clear understanding of the ecosystem. Experienced builders were able to dive into technical topics, build during workshops, see new blockchain SDK tools, and hear about the latest developments on Polkadot and beyond.

Since the Event Bounty limits applications to amounts at around USD150’000, it was decided to post the final tranche of the proposal here.

This is the post-event report and the last tranche request. All costs submitted for this last tranche were backstopped by the Web 3.0 Technologies Foundation. 

Further information on the proposal, including milestones, actual costs, agenda, results, auditors' report and more can be found under this [LINK](https://docs.google.com/document/d/1nIne1GxS9O2P2Sk_K3uuxmearktJ1RYGICZ8PUag8SU/edit).

Problem Statement:
- The Sub0 conference aims to bring together developers building at every level of the Polkadot tech stack, but there is a need to limit the Event Bounty applications to amounts around $150,000.

Significance:
- The Sub0 conference provides an opportunity for developers to deepen their skills, connect with each other, and learn about the Polkadot tech stack and ecosystem.

Proposed Solution:
- The final tranche of the proposal for the Sub0 conference is posted, with all costs backstopped by the Web 3.0 Technologies Foundation.

Expected Outcomes:
- The post-event report and last tranche request provide information on the proposal, including milestones, actual costs, agenda, results, auditors' report, and more.

#606 Polkadot Developers Conference // sub0 September 19-20, 2023 in Lisbon, Portugal - Final tranche