Last updated: June 17, 2025

1. Overview

HackMeridian 2025 ("Hackathon") is a 36-hour in-person competition that challenges builders to create innovative solutions on the Stellar blockchain. Organized by NearX Educational Platform in collaboration with the Stellar Development Foundation (SDF), the event will take place on September 15–16, 2025, at the Copacabana Palace, Av. Atlântica 1702, Rio de Janeiro, Brazil.

Purpose. Participants will form teams and develop projects within one of three tracks:

  1. Open Innovation
  2. Composability
  3. Developers Tooling

2. Key Dates (UTC‑3 / Brasília Time)

Milestone Date & Time
Registration opens June 24, 2025 (00:00)
Registration closes August 31, 2025 (23:59)
Doors open September 15, 2025 – 09:00
Hacking window Sept 15, 2025 – 00:00 → Sept 16, 2025 – 12:30
Final submission deadline Sept 16, 2025 – 12:30
Final pitches & winners announcement Sept 16, 2025 (afternoon, during Meridian)

Workshops and mentoring sessions will be announced later.

3. Eligibility

  1. Age. Participants must be 18 years or older on Sept 15, 2025.
  2. Jurisdictions. The hackathon is open to participants worldwide. However, prizes cannot be awarded where prohibited by Brazilian or international law. Participants are responsible for complying with their local regulations.
  3. Conflicts of Interest. Employees, contractors, and immediate family members of NearX, SDF, sponsors, event staff, or judges are ineligible to compete.
  4. Minors. Participation of minors is not allowed, even with parental consent.

4. Team Formation