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Emerald ParaTime

Emerald is our official ParaTime which executes smart contracts inside the Ethereum Virtual Machine (EVM).

Emerald allows for:

  • Full EVM compatibility
  • Easy integration with EVM-based dApps, such as DeFi, NFT, Metaverse and crypto gaming
  • Scalability: increased throughput of transactions
  • Low-cost: 99%+ lower fees than Ethereum
  • 6 second finality (1 block)
  • Cross-chain bridge to enable cross-chain interoperability (upcoming)

If you're looking for EVM, but with confidentiality, check out the Sapphire ParaTime.

Chain Information​

Mainnet​

  • Network name: emerald
  • Long network name: Oasis Emerald
  • Chain ID:
    • Hex: 0xa516
    • Decimal: 42262

Testnet​

  • Network name: emerald-testnet
  • Long network name: Oasis Emerald Testnet
  • Chain ID:
    • Hex: 0xa515
    • Decimal: 42261

RPC Endpoints​

danger

The RPC endpoint is a point of trust. Beside traffic rate limiting, it can also perform censorship or even a man-in-the-middle attack. If you have security considerations, we strongly recommend that you set up your own ParaTime client node and the Web3-compatible gateway.

You can connect to one of the public Web3 gateways below (in alphabetic order):

ProviderMainnet RPC URLsTestnet RPC URLs
1RPChttps://1rpc.io/oasis/emerald
N/A
Oasis Protocol Foundationhttps://emerald.oasis.io
wss://emerald.oasis.io/ws
https://testnet.emerald.oasis.io
wss://testnet.emerald.oasis.io/ws

Public RPCs may have rate limits or traffic restrictions. For professional, dedicated RPC endpoints, consider the following providers (in alphabetic order):

ProviderInstructionsPricing
1RPCdocs.1rpc.ioPricing

Block Explorers​

Name/ProviderMainnet URLTestnet URLEIP-3091 compatible
Oasis Explorerhttps://explorer.oasis.io/mainnet/emeraldhttps://explorer.oasis.io/testnet/emeraldYes
Oasis Scan (Bit Cat)https://www.oasisscan.com/paratimes/000…87fhttps://testnet.oasisscan.com/paratimes/000…ca7No

Indexers​

Name (Provider)Mainnet URLTestnet URLDocumentation
Covalenthttps://api.covalenthq.com/v1/oasis-emerald-mainnetN/AUnified API docs
Oasis Nexus (Oasis Protocol Foundation)https://nexus.oasis.io/v1/https://testnet.nexus.oasis.io/v1/API
Oasis Scan (Bit Cat)https://api.oasisscan.com/mainnet/v2https://api.oasisscan.com/testnet/v2Mainnet Runtime API, Testnet Runtime API
SubQuery NetworkN/AN/ASubQuery Academy, QuickStart, Starter project
note

If you are running your own Emerald endpoint, a block explorer, or an indexer and wish to be added to these docs, open an issue at github.com/oasisprotocol/docs.

See also​