Chain ID

A blockchain network is represented by a chain ID, which is a special identifier. It helps us distinguish between several blockchain networks and guarantee that transactions and communications are transmitted to the appropriate network. The format used by the Humans.ai network is identifier_EIP155-version.

Official Chain IDs

note

The most recent version of the software and mainnet is indicated by the Chain ID with the highest version number.

Mainnet

Name	Chain ID	Identifier	EIP155 Number	Version Number	Active
Humans.ai Mainnet	humans_1089-1	humans	1089	1	✅

Testnet

Name	Chain ID	Identifier	EIP155 Number	Version Number	Active
Humans.ai Testnet	humans_4139-1	humans	4139	1	✅

tip

Using chainlist.org, you can also check up the EIP155 Chain ID.

You can also lookup the EIP155 Chain ID by referring to chainlist.org.

The Chain Identifier

A distinct identification, or chain-id, is required for each chain. Each application must specify its own chain-id in the genesis.json fields in order to work with Tendermint. However, Humans.ai compatible chains must have a unique structure for their chain identifiers in order to adhere to both the EIP155 and Cosmos standards for chain updates.

Structure

There are three primary parts to the Humans.ai Chain ID:

• Identifier: Unstructured string that specifies the application's name.
• EIP155 Number: Immutable EIP155 CHAIN_ID that defines the replay attack protection number.
• Version Number: Is the chain's current version number, which is always positive. To avoid network or consensus issues, this number MUST be increased each time the chain is upgraded or forked.

Format

The format for specifying a chain-id in Genesis that is Humans.ai compliant is as follows:

{identifier}_{EIP155}-{version}

The following table provides an example where the second row corresponds to an upgrade from the first one:

ChainID	Identifier	EIP155 Number	Version Number
humans_1089-1	humans	1089	1