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Quick Facts

• The Logos Blockchain is a blockchain infrastructure that functions as the foundational layer of the Logos technology stack.
• It is designed to host decentralised applications and institutions requiring high levels of privacy and resilience.
• The network is designed with low entry barriers, allowing validators to participate with typical consumer hardware and any amount of stake.
• Logos Blockchain consists of two layers: lightweight, permissionless blockchains called Zones built on top of a Layer 1 foundation called Bedrock. Specialised Bedrock Services are used to improve the functionality of the network.
• Logos Blockchain supports applications on both Zones (with full security inheritance and interoperability) and Sovereign Rollups (with complete freedom and maximum performance). </aside>

Introduction

The Logos Blockchain is a blockchain infrastructure designed for decentralised applications for social institutions that require high levels of privacy and resilience. It facilitates the creation and operation of these applications, provides a common context for their interaction, and gives users the ability to freely use any application they desire. Despite the diverse variety of apps that can be built on Logos, it provides guarantees that they will operate correctly, securely, and without corruption.

The Logos Blockchain was designed with the following principles in mind:

• Privacy: The Logos Blockchain must protect information associated with all participants, regardless of their involvement in the network. On the infrastructure level, Logos nodes must be confident that their block proposals have a very low probability of being traced. Logos also provides developers with the tools to build applications with programmable privacy, allowing these applications to keep personal data hidden.
• Neutrality: Activity on the Logos Blockchain must be handled in a way that does not compromise the public neutrality of Logos nodes. This way, nodes can participate in processing transactions without having to make their inclusion public. If a Logos-native application attempts to censor a user by excluding their transactions, the Logos Blockchain provides a fallback path to ensure that the transaction is included.
• Resilience: The Logos Blockchain must remain operational and protect privacy in the face of complex geopolitical scenarios, surviving challenges like a partitioned internet, heavy censorship, and hostile government action. To attract validators and reduce points of failure, running a Logos node even on a laptop must be easy and straightforward. Scaling to accommodate as many nodes as possible is best accomplished with a consensus protocol that prioritises liveness, resulting in a network that continues operating even in the worst of conditions.

Comparisons

The Logos Blockchain occupies an uncharted area in the design space between a variety of different existing projects. Therefore, it is more productive to compare it to two distinct groups of projects based on varying criteria. These groups are infrastructure projects and privacy-preserving blockchains.

Infrastructure Projects

We compare infrastructure projects across a few dimensions:

• Liveness: Protocol will continue operating in the event of a large network failure or attack.
• Accessible validation: There are low barriers to entry to serve as a validator.
• Shared security: Different appchains benefit from the collective security of the entire chain.
• Proposer privacy: Block proposers cannot be linked back to their proposal.
• Permisionless consensus: Participation in consensus does not require special permissions.

*Future releases will drastically improve shared security

Privacy-Preserving Blockchains

We compare private blockchain projects across a few dimensions: