paritytech/polkadotArchived
Polkadot
Polkadot is a Substrate-based layer 0 blockchain and distributed ledger node software. It functions as a multi-chain runtime environment and cross-chain interoperability protocol designed to connect and secure multiple independent blockchain shards through a shared relay chain.
The system utilizes a relay-chain hub architecture to provide shared security and communication for parallel blockchains. It implements cross-chain message passing to route data and value between networks and uses a WebAssembly-based state transition for deterministic execution of blockchain logic.
The software covers blockchain node operation and network infrastructure, including the ability to operate network nodes and simulate local multi-node environments. It also includes capabilities for blockchain performance monitoring by exporting system metrics to external dashboards.
Features
- Relay-Chain Architectures - Uses a central relay-chain hub architecture to provide shared security and communication for parallel blockchains.
- Distributed Ledger Nodes - Provides node software that validates state transitions and maintains a synchronized state across a decentralized network.
- Proof-of-Stake Consensus - Secures the network by selecting validators based on their locked token holdings to agree on blocks.
- Blockchain Node Operation - Provides the software necessary to run a node that connects to the network to maintain a shared ledger.
- Blockchain Nodes - Enables participation in decentralized networks as a full, archive, or light node to maintain a synchronized ledger.
- Cross-Chain Interoperability Protocols - Implements a communication standard for transferring data and assets between different blockchain networks.
- Cross-Chain Messaging Protocols - Provides standardized protocols for coordinating state changes and routing messages between independent distributed ledgers.
- Multi-Chain Runtimes - Provides a framework for executing custom blockchain logic and state transitions across a coordinated network of parachains.
- Blockchain Finality Gadgets - Ships a voting-based finality mechanism that allows the network to reach agreement without synchronous communication.
- Layer 0 Blockchains - Acts as a foundational networking layer that connects and secures multiple independent blockchain shards through a shared relay chain.
- Wasm-Based Execution - Executes blockchain logic inside a WebAssembly virtual machine to ensure deterministic execution across hardware platforms.
- Blockchain Network Simulators - Provides isolated runtimes that simulate a blockchain network for testing consensus and transactions.
- Slot-Based Block Production - Implements a deterministic pseudo-random function to assign block production slots to network validators.
- Local Network Simulators - Launches single or multi-node environments on a local machine to test network behavior and consensus algorithms.
