Kraken is a Starknet modular decentralized sequencer implementation.

Related tags

Cryptography starknet_kraken
Overview

Lambda Starknet Sequencer

A Starknet decentralized sequencer implementation.

Getting started

The objective of this project is to create an L2 decentralized sequencer for Starknet. This will be one of the multiple implementations that will follow the decentralized sequencer.

The sequencer can be broken down into (roughly) 3 interchangeable modules:

  • Mempool (Narwhal) which stores received transactions
  • Consensus (Bullshark, Tendermint, Hotstuff) which orders transactions stored by the mempool
  • Execution Engine, which executes the transactions on the state machine. The OS is given by Starknet in Rust and execution is deferred to Sierra2MLIR or Cairo-rs.

By interchangeable modules we mean that the underlying algorithm implementation in the Mempool communication, the Consensus protocol or the Execution Engine can be changed and configured.

Additionally, in order to maintain and persist state, there is a State module which implements PhotonDB in a first iteration.

Reference links

Starknet

Other implementations

Comments
  • Introduce RPC endpoint

    Introduce RPC endpoint

    Closes #1

    This PR introduces the RPC endpoint according to the OpenRPC specs: https://github.com/starkware-libs/starknet-specs/blob/master/api/release.md

    Types were generated by this generator, and the code was updated to use cairo-felt instead the other internal types, so some adjustments had to be made to the serializers/deserializers.

    To-do:

    • Test serializers and deserializers
    • Create the endpoint upon starting the program
    opened by igamigo 0
  • Implement basic RPC interface

    Implement basic RPC interface

    Use jsonrpsee to implement a basic RPC API with mock responses that conforms to the OpenRPC specs: https://github.com/starkware-libs/starknet-specs/tree/master/api This will allow for a basic interface that is compatible with starknet clients such as starknet-rs apps

    opened by igamigo 0
  • Basic block struct and creation

    Basic block struct and creation

    Investigate block production and implement a basic form of it.

    Starknet docs block article: https://docs.starknet.io/documentation/architecture_and_concepts/Blocks/header/

    https://github.com/keep-starknet-strange/madara/blob/main/crates/primitives/starknet/src/block/mod.rs

    https://github.com/eqlabs/pathfinder/blob/e1a716c6a4181be17400c5aad382ffd3e60d95df/crates/pathfinder/src/state/block_hash.rs

    opened by igamigo 1
  • Implement basic storage layer

    Implement basic storage layer

    Implement storage layer that has a simple K/V API. It can be based on any DB (RocksDB, libmdbx) for now but will probably change later on. Reference implementation in papyrus_storage crate in Papyrus repo

    opened by igamigo 0
  • Implement basic concept of mempool

    Implement basic concept of mempool

    When a transaction arrives (for instance through an addInvokeTransaction), there should be a queue that the sequencer can use in a first-come-first-served way in order to execute them and that does not block the arrival of new transactions whenever one is executing. Duplicate txs should be skipped. Reference example: https://github.com/lambdaclass/consensus-workbench/blob/main/src/blockchain/node.rs

    opened by igamigo 0
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Lambdaclass
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