generated: '2026-07-18'
method: searched
source: >
  https://github.com/cypherium/rosetta-cypherium, https://github.com/cypherium/cypher (JSON-RPC docs),
  https://www.cypherium.io/ (ISO 20022 claim). No formal certification/compliance program published.
standards:
  - id: rosetta-api
    name: Coinbase Rosetta API (Data + Construction)
    conforms: true
    evidence: cypherium/rosetta-cypherium is a Golang reference implementation of the Rosetta API for Cypherium (Data API online :8080, Construction/offline :8081).
  - id: ethereum-json-rpc
    name: Ethereum JSON-RPC
    conforms: true
    evidence: Cypherium node (Geth-based, cypherium-v2.0.0) exposes eth/web3/net/personal/miner/txpool/admin namespaces over HTTP/WS/IPC JSON-RPC; verified web3_clientVersion at https://pubnodes.cypherium.io/rpc.
  - id: evm
    name: Ethereum Virtual Machine / Solidity
    conforms: true
    evidence: EVM-compatible chain (cvm - Cypherium Virtual Machine); deploys Solidity contracts and Uniswap V2 forks; EVM chain ID 16166.
  - id: iso-20022
    name: ISO 20022 financial messaging
    conforms: claimed
    evidence: cypherium.io markets ISO 20022 compliance for banking integration (Cypherium Connect); no third-party attestation published.
  - id: rfc9457-problem-details
    conforms: false
  - id: oauth2
    conforms: false
    evidence: node JSON-RPC is unauthenticated; no OAuth2 surface.