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Oasis Emerald

Introduction

The Oasis Emerald ParaTime is the official EVM compatible ParaTime providing smart contract environment with full EVM compatibility. As the official EVM compatible ParaTime on the Oasis Network, 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
  • Cross-chain bridge to enable cross-chain interoperability (upcoming)

Quick facts

Property Value
Oasis Emerald Mainnet 42262
Emerald Blockchain Explorer https://explorer.emerald.oasis.dev/
Block time ~20 seconds

Supported endpoints

Get token balances for address
Class A
Given chain_id and wallet address, return current token balances along with their spot prices. This endpoint supports a variety of token standards like ERC20, ERC721 and ERC1155. As a special case, network native tokens like ETH on Ethereum are also returned even though it’s not a token contract.
GET
/v1/:chain_id/address/:address/balances_v2/
Get transactions for address
Class A
Given chain_id and wallet address, return all transactions along with their decoded log events. This endpoint does a deep-crawl of the blockchain to retrieve all kinds of transactions that references the address including indexed topics within the event logs.
GET
/v1/:chain_id/address/:address/transactions_v2/
Get ERC20 token transfers for address
Class A
Given chain_id, wallet address and contract-address, return all ERC20 token contract transfers along with their historical prices at the time of their transfer.
GET
/v1/:chain_id/address/:address/transfers_v2/
Get token holders as of any block height
Class A
Given chain_id and wallet address, return a paginated list of token holders. If block-height is omitted, the latest block is used.
GET
/v1/:chain_id/tokens/:address/token_holders/
Get log events by contract address
Class A
Given chain_id and contract address, return a paginated list of decoded log events emitted by a particular smart contract.
GET
/v1/:chain_id/events/address/:address/
Get log events by topic hash(es)
Class A
Given chain_id and topic hash(es), return a paginated list of decoded log events with one or more topic hashes separated by a comma.
GET
/v1/:chain_id/events/topics/:topic/

Go to Covalent’s API Reference

Appendix

Oasis token

The Oasis token ROSE is the native token of the Oasis Network, which is similar to Ether in Ethereum. To interact with Oasis chains, ROSE tokens are required to pay gas fees. The Covalent API response returns gas_* fields in fiat units.

Last modified: November 10, 2022: Add oasis emerald docs (#246) (7d7c98d)