# Cypherium

> Cypherium is a permissionless Layer-1 blockchain that bridges centralized (CeFi) and decentralized (DeFi) finance for real-world assets. It runs the CypherBFT hybrid consensus (GPU proof-of-work committee election + HotStuff BFT) for instant finality, is EVM/Solidity compatible, and markets ISO 20022 banking integration. Developers interact with it through an Ethereum-style JSON-RPC node API and a Coinbase Rosetta API implementation.

## APIs
- [Cypherium JSON-RPC](https://pubnodes.cypherium.io/rpc): Ethereum-compatible node JSON-RPC over HTTP/WS/IPC — eth, web3, net, personal, miner, txpool, admin namespaces (EVM chain ID 16166).
- [Rosetta Cypherium](https://github.com/cypherium/rosetta-cypherium): Coinbase Rosetta API (Data + Construction) reference implementation for exchange/wallet integration.

## Docs
- [cypher node & RPC docs](https://github.com/cypherium/cypher): node implementation and JSON-RPC usage
- [Cypherium website](https://www.cypherium.io/): products (CypherLink, Cypherium Connect, Validator, Cypherium ID)
- [Block explorer](https://cypherium.tryethernal.com/): mainnet explorer (Ethernal)
- [Blog](https://www.cypherium.io/blog): announcements and technical posts
- [Medium](https://cypherium.medium.com/): long-form updates and mining guide

## Packages
- [@cypherium/web3c](https://www.npmjs.com/package/@cypherium/web3c): official JavaScript RPC client (npm)
- [github.com/cypherium/cypherBFT](https://pkg.go.dev/github.com/cypherium/cypherBFT/cph): Go full-node packages
- [github.com/cypherium/blockchain](https://pkg.go.dev/github.com/cypherium/blockchain): Go protocol implementation

## Source
- [Cypherium on GitHub](https://github.com/cypherium): 25 repos — node (blockchain, cypher, cvm, cypherHotstuff), Rosetta, wallet-server, Uniswap V2 forks, meshbridge (EVM cross-chain), examples

## Artifacts (API Evangelist)
- [packages](https://raw.githubusercontent.com/api-evangelist/cypherium/refs/heads/main/packages/cypherium-packages.yml)
- [conformance](https://raw.githubusercontent.com/api-evangelist/cypherium/refs/heads/main/conformance/cypherium-conformance.yml)
- [domain security](https://raw.githubusercontent.com/api-evangelist/cypherium/refs/heads/main/security/cypherium-domain-security.yml)