MITOSIS: Practically Scaling Permissioned Blockchains

09/21/2021
by   Giorgia Azzurra Marson, et al.
0

Scalability remains one of the biggest challenges to the adoption of permissioned blockchain technologies for large-scale deployments. Permissioned blockchains typically exhibit low latencies, compared to permissionless deployments – however at the cost of poor scalability. Various solutions were proposed to capture "the best of both worlds", targeting low latency and high scalability simultaneously, the most prominent technique being blockchain sharding. However, most existing sharding proposals exploit features of the permissionless model and are therefore restricted to cryptocurrency applications. We present MITOSIS, a novel approach to practically improve scalability of permissioned blockchains. Our system allows the dynamic creation of blockchains, as more participants join the system, to meet practical scalability requirements. Crucially, it enables the division of an existing blockchain (and its participants) into two – reminiscent of mitosis, the biological process of cell division. MITOSIS inherits the low latency of permissioned blockchains while preserving high throughput via parallel processing. Newly created chains in our system are fully autonomous, can choose their own consensus protocol, and yet they can interact with each other to share information and assets – meeting high levels of interoperability. We analyse the security of MITOSIS and evaluate experimentally the performance of our solution when instantiated over Hyperledger Fabric. Our results show that MITOSIS can be ported with little modifications and manageable overhead to existing permissioned blockchains, such as Hyperledger Fabric.

READ FULL TEXT

Authors

page 1

page 5

05/21/2021

Pravuil: Global Consensus for a United World

Pravuil is a robust, secure, and scalable consensus protocol for a permi...
07/24/2020

Towards Improving the Performance of BFT Consensus For Future Permissioned Blockchains

Permissioned Blockchains are increasingly considered in enterprise use-c...
03/05/2020

We Know What They've Been Put Through: Revisiting High-scalability Blockchain Transactions

Scalability has been a bottleneck for major blockchains such as Bitcoin ...
03/02/2021

The Difficulty in Scaling Blockchains: A Simple Explanation

Blockchains have become immensely popular and are high on the list of na...
03/18/2022

Decentralizing Permissioned Blockchain with Delay Towers

Growing excitement around permissionless blockchains is uncovering its l...
09/27/2018

PolyShard: Coded Sharding Achieves Linearly Scaling Efficiency and Security Simultaneously

Today's blockchains do not scale in a meaningful sense. As more nodes jo...
11/13/2017

Stampery Blockchain Timestamping Architecture (BTA) - Version 6

A method for timestamping, anchoring and certification of a virtually un...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.