Unicorn Ultra
  • Welcome to unicorn ultra — let’s build the future
  • Getting Started
    • Introduction
    • Environment Setup
    • Create an Account
    • Transfer U2U
    • Query Ledger Data
  • Tutorials
    • Smart Contracts
      • Deploy Your First Smart Contract
      • Deploy a Contract Using the Hedera Token Service
      • Send and Receive HBAR Using Solidity Smart Contracts
      • Create an HBAR Faucet App Using React and MetaMask
      • Deploy By Leveraging Ethereum Developer Tools On Hedera
      • Deploy a Smart Contract Using Hardhat
      • Deploy a Subgraph Using The Graph and JSON-RPC
      • How to Set Up Foundry to Test Smart Contracts on Hedera
      • Deploy Smart Contracts on Hedera Using Truffle
    • Consensus
      • Submit Your First Message
      • Submit Message to Private Topic
      • Query Messages with Mirror Node
    • Tokens
      • Create and Transfer Your First NFT
      • Create and Transfer Your First Fungible Token
      • Create and Transfer an NFT using a Solidity Contract
      • Structure Your Token Metadata Using JSON Schema V2
    • More Tutorials
      • How to Auto-Create Hedera Accounts with HBAR and Token Transfers
      • How to Configure a Mirror Node and Query Data
      • How to Generate a Random Number on Hedera
      • Get Started with the Hedera Consensus Service Fabric Plugin
        • Virtual Environment Setup
      • Schedule Your First Transaction
      • How to Connect to Hedera Networks Over RPC
        • Configuring Hashio RPC endpoints
        • Configuring Arkhia RPC endpoints
        • Configuring Hedera JSON-RPC Relay endpoints
    • Demo Applications
    • Starter Projects
  • Networks
    • Mainnet
      • Mainnet Accounts
      • Mainnet Consensus Nodes
        • Node Requirements
          • Reference Configuration
          • FAQ
      • Fees
        • Transaction Records
    • Testnets
      • Testnet Accounts
      • Testnet Consensus Nodes
    • Network Explorers and Tools
    • Release Notes
      • Hedera Services
      • Hedera Mirror Node
  • Core Concepts
    • Accounts
      • Account Creation
      • Auto Account Creation
      • Account Properties
    • Keys and Signatures
    • Scheduled Transaction
    • Smart Contracts
      • Hyperledger Besu EVM
      • Gas and Fees
      • Solidity Variables and Opcodes
      • Supported ERC Token Standards
      • Hedera Services Integration with Smart Contracts
      • JSON-RPC Relay
      • Hethers
      • Smart Contract Security
    • Staking
      • Staking Program
      • Stake HBAR
    • Hashgraph Consensus Algorithm
      • Gossip About Gossip
      • Virtual Voting
    • Transactions and Queries
    • State and History
    • Mirror Nodes
      • Hedera Mirror Node
      • One Click Mirror Node Deployment
      • Run Your Own Mirror Node
        • Run Your Own Mirror Node with Google Cloud Storage (GCS)
        • Run Your Mirror Node with Amazon Web Services S3 (AWS)
      • Hedera ETL
  • SDKs & APIs
    • SDKs
      • Build Your Hedera Client
      • Set Up Your Local Network
      • Network Address Book
      • Keys
        • Generate a new key pair
        • Import an existing key
        • Create a key list
        • Create a threshold key
        • Generate a mnemonic phrase
        • Recover keys from a mnemonic phrase
      • HBAR
      • Specialized Types
      • Pseudorandom Number Generator
      • Transactions
        • Transaction ID
        • Modify transaction fields
        • Create an unsigned transaction
        • Manually sign a transaction
        • Submit a transaction
        • Sign a multisignature transaction
        • Get a transaction receipt
        • Get a transaction record
      • Schedule Transaction
        • Schedule ID
        • Create a scheduled transaction
        • Sign a scheduled transaction
        • Delete a scheduled transaction
        • Get schedule info
        • Network Response Messages
        • Schedule FAQ
      • Queries
      • General Network Response Messages
      • Accounts and HBAR
        • Create an account
        • Update an account
        • Transfer cryptocurrency
        • Approve an allowance
        • Delete an allowance
        • Delete an account
        • Get account balance
        • Get account info
        • Network Response Messages
      • Consensus Service
        • Create a topic
        • Update a topic
        • Submit a message
        • Delete a topic
        • Get topic messages
        • Get topic info
        • Network Response
      • Token Service
        • Token ID
        • NFT ID
        • Token types
        • Create a token
        • Custom token fees
        • Update a token
        • Update token custom fees
        • Transfer tokens
        • Delete a token
        • Mint a token
        • Burn a token
        • Freeze an account
        • Unfreeze an account
        • Enable KYC account flag
        • Disable KYC account flag
        • Associate tokens to an account
        • Dissociate tokens from an account
        • Pause a token
        • Unpause a token
        • Wipe a token
        • Atomic swaps
        • Get account token balance
        • Get token info
        • Get NFT info
        • Network Response Messages
      • File Service
        • Create a file
        • Append to a file
        • Update a file
        • Delete a file
        • Get file contents
        • Get file info
        • Network Response Messages
      • Smart Contract Service
        • Delegate Contract ID
        • Create a smart contract
        • Update a smart contract
        • Delete a smart contract
        • Call a smart contract function
        • Ethereum transaction
        • Get a smart contract function
        • Get smart contract bytecode
        • Get smart contract info
        • Hedera Service Solidity Libraries
        • Network Response Messages
      • Signature Provider
        • Provider
        • Signer
        • Wallet
        • Local Provider
    • REST API
    • Hedera Consensus Service gRPC API
    • Hedera APIs
      • Basic Types
        • AccountAmount
        • AccountID
        • ContractID
        • CryptoAllowance
        • CurrentAndNextFeeSchedule
        • FeeComponents
        • FeeData
        • FeeSchedule
        • FileID
        • Fraction
        • HederaFunctionality
        • Key
        • KeyList
        • NftAllowance
        • NftTransfer
        • NodeAddress
        • NodeAddressBook
        • RealmID
        • ScheduleID
        • SemanticVersion
        • ServicesConfigurationList
        • ServiceEndpoint
        • Setting
        • ShardID
        • Signature
        • SignatureList
        • SignatureMap
        • SignaturePair
        • SubType
        • TransferList
        • TransactionID
        • ThresholdKey
        • ThresholdSignature
        • TokenAllowance
        • TokenBalance
        • TokenBalances
        • TokenFreezeStatus
        • TokenPauseStatus
        • TokenID
        • TokenKycStatus
        • TokenRelationship
        • TokenTransferList
        • TokenType
        • TokenSupplyType
        • TopicID
        • TransactionFeeSchedule
      • Cryptocurrency Accounts
        • CryptoService
        • CryptApproveAllowance
        • CryptoDeleteAllowance
        • CryptoCreate
        • CryptoTransfer
        • CryptoUpdate
        • CryptoDelete
        • CryptoGetAccountBalance
        • CryptoGetAccountRecords
        • CryptoGetInfo
        • CryptoGetStakers
      • Consensus Service
        • Consensus Service
        • ConsensusCreateTopic
        • ConsensusUpdateTopic
        • ConsensusSubmitMessage
        • ConsensusDeleteTopic
        • ConsensusTopicInfo
        • ConsensusGetTopicInfo
      • Schedule Service
        • ScheduleService
        • SchedulableTransactionBody
        • ScheduleCreate
        • ScheduleDelete
        • ScheduleSign
        • ScheduleGetInfo
      • Token Service
        • TokenService
        • CustomFees
          • AssessedCustomFee
          • CustomFee
          • FractionalFee
          • FixedFee
          • RoyaltyFee
        • TokenCreate
        • TokenUpdate
        • TokenFeeScheduleUpdate
        • TokenDelete
        • TokenMint
        • TokenBurn
        • TokenFreezeAccount
        • TokenUnfreezeAccount
        • TokenGrantKyc
        • TokenRevokeKyc
        • TokenAssociate
        • TokenDissociate
        • TokenWipeAccount
        • TokenPause
        • TokenUnpause
        • TokenGetInfo
        • TokenGetNftInfo
        • TokenGetNftInfos
        • TokenGetAccountNftInfo
      • File Service
        • FileService
        • FileCreate
        • FileAppend
        • FileUpdate
        • FileDelete
        • FileGetContents
        • FileGetInfo
      • Smart Contracts
        • SmartContractService
        • ContractCall
        • ContractCallLocal
        • ContractCreate
        • ContractUpdate
        • ContractDelete
        • ContractGetByteCode
        • ContractGetInfo
        • ContractGetRecords
      • Miscellaneous
        • Duration
        • ExchangeRate
        • Freeze
        • FreezeType
        • GetByKey
        • GetBySolidityID
        • NetworkGetVersionInfo
        • NetworkService
        • Query
        • QueryHeader
        • Response
        • ResponseCode
        • ResponseHeader
        • SystemDelete
        • SystemUndelete
        • TimeStamp
        • Transaction
        • TransactionBody
        • TransactionContents
        • TransactionGetFastRecord
        • TransactionGetReceipt
        • TransactionGetRecord
        • TransactionReceipt
        • TransactionRecord
        • TransactionResponse
        • UncheckedSubmit
    • Deprecated
      • SDKs (V1)
        • Build your Hedera client
        • Set-up Your Local Network
        • Network address book
        • Keys
          • Generate a new key pair
          • Import an existing key
          • Create a key list
          • Create a threshold key
          • Generate a mnemonic phrase
          • Recover keys from a mnemonic phrase
        • Hbars
        • Specialized Types
        • Pseudorandom Number Generator
        • Transactions
          • Transaction ID
          • Modify transaction fields
          • Create an unsigned transaction
          • Manually sign a transaction
          • Submit a transaction
          • Sign a multisignature transaction
          • Get a transaction receipt
          • Get a transaction record
        • Scheduled Transaction
          • Schedule ID
          • Create a scheduled transaction
          • Sign a scheduled transaction
          • Delete a scheduled transaction
          • Get schedule info
          • Network Response Messages
          • Schedule FAQ
        • Queries
        • General Network Response Messages
        • Accounts and hbar
          • Create an account
          • Update an Account
          • Transfer cryptocurrency
          • Approve an allowance
          • Delete an allowance
          • Delete an account
          • Get account balance
          • Get account info
          • Network Response Messages
        • Consensus Service
          • Create a topic
          • Update a topic
          • Submit a message
          • Delete a topic
          • Get topic messages
          • Get topic info
        • Token Service
          • Token ID
          • NFT ID
          • Token types
          • Create a token
          • Custom token fees
          • Update a token
          • Update token custom fees
          • Transfer tokens
          • Delete a token
          • Mint a token
          • Burn a token
          • Freeze an account
          • Unfreeze an account
          • Enable KYC account flag
          • Disable KYC account flag
          • Associate tokens to an account
          • Dissociate tokens from an account
          • Pause a token
          • Unpause a token
          • Wipe a token
          • Atomic swaps
          • Get account token balance
          • Get token info
          • Get NFT info
          • Network Response Messages
        • File Service
          • Create a file
          • Append to a file
          • Update a file
          • Delete a file
          • Get file contents
          • Get file info
          • Network Response Messages
  • Support & Community
    • Glossary
    • Discord
    • GitHub
    • Stack Overflow
    • Hedera Blog
    • Bug Bounty
    • Hedera Help
    • Meetups
    • Contributing Guide
    • Brand Guidelines
    • Status Page
Powered by GitBook
On this page
  • HBAR decimal places
  • Community Hosted JSON-RPC Relays
  • FAQ
  1. Core Concepts
  2. Smart Contracts

JSON-RPC Relay

PreviousHedera Services Integration with Smart ContractsNextHethers

Last updated 1 year ago

The is an open-source project implementing the Ethereum JSON-RPC standard. The JSON-RPC relay allows developers to interact with Hedera nodes using familiar Ethereum tools. This allows Ethereum developers and users to deploy, query, and execute contracts as they usually would. Check out the interactable and a simple . The Hedera JSON-RPC relay implementation is in beta, offers limited functionality today, and is only available to developers.

HBAR decimal places

The JSON RPC Relay msg.value uses 18 decimals when it returns HBAR. As a result, the gasPrice value returns 18 decimal places since it is only utilized from the JSON RPC Relay. Refer to the for a list of Hedera APIs and the decimal places they return.

Community Hosted JSON-RPC Relays

Anyone in the community can set up their own JSON RPC relay that applications can use to deploy, query, and execute smart contracts. The endpoints for previewnet, testnet, and mainnet can be found in their associated docs or website. You will find the list of community-hosted Hedera JSON RPC Relays below. If you want to add your hosted JSON RPC relay to this list, please open an issue in the . Please be sure to visit the community-hosted websites to review any limitations specific to their instance.

FAQ

Are there Community hosted relays?
How do I connect to the Hedera Network over RPC?

The configuration guide to connect to the Hedera Network over RPC can be found .

Where can I find the Hedera JSON-RPC relay endpoints?
How does Hedera handle decimals in HBAR and gas prices?
How can I contribute or log errors?

The endpoints for previewnet, testnet, and mainnet can be found on , accessible through the website. Feel free to join the discussion on for more questions.

The JSON-RPC Relay msg.value uses 18 decimals when it returns HBAR. The gasPrice value also returns 18 decimal places. Check out the for the full list of Hedera APIs and their decimal representation.

To contribute or log errors, please refer to the and submit them as issues in the .

Hashio
Swirlds Labs
Stack Overflow
HBAR page
Contributing Guide
GitHub repository
Hedera JSON-RPC Relay
OpenRPC Specification
list of endpoints
HBAR page
Hedera docs GitHub repository
Hashio
Arkhia
here
Cover

Hashio

Cover

Arkhia