Celestia has announced the launch of mamo-1, a public testnet designed to push the limits of modular blockchain scalability. The network delivers 128MB blocks every six seconds, enabling a throughput of 21.33MB per second - over 16 times the capacity of Celestia's current mainnet.
mamo-1 builds on the success of the previous Mammoth Mini devnet, translating experimental performance gains into a production-ready environment. With real-world validator configurations and distributed node setups, the testnet is designed to simulate operational conditions developers would encounter on mainnet.
Key Objectives and Configuration
The purpose of mamo-1 is to:
Stress-test Celestia under heavy data loads
Validate protocol optimizations and scaling improvements
Enable developers to benchmark rollups, games, and DA-intensive applications in realistic conditions
The testnet includes 21 validators distributed across Amsterdam, Paris, and Warsaw. Unlike Mammoth Mini, which focused on consensus performance, mamo-1 integrates with Celestia's data availability (DA) layer, supporting light node sampling and DASing.
Vacuum! Protocol at Work
One of the core technologies behind mamo-1 is Vacuum!, a new data propagation protocol aimed at improving efficiency and resilience. Vacuum! uses lazy gossiping, where data is shared only upon request, reducing redundant traffic and allowing faster block propagation.
A key feature in mamo-1 is the Pull-Based Broadcast Tree (PBBT), which handles recovery after block proposal. It pipelined data requests, distributed chunks across validators, and utilized erasure coding to reconstruct blocks under partial availability.
These techniques help make block propagation more robust, reduce latency, and increase throughput - all critical for supporting the high demands of modular infrastructure.
What mamo-1 Means for Developers
mamo-1 provides an environment for testing applications at scale, especially those relying on high data throughput such as zk-rollups, verifiable web apps, or fully-onchain games. Developers can benchmark performance under realistic conditions and help inform future protocol improvements.
With mamo-1, Celestia continues on its roadmap toward 1GB block capacity. The testnet offers valuable insights into the scalability of modular blockchain networks and lays the foundation for upcoming mainnet upgrades.
To learn more or get started with mamo-1, visit the block explorer or follow the technical documentation on Celestia.
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