Network reference

Mainnet


Coin	LAX, 18 decimals (1 LAX = 10¹⁸ wei)
Chain ID (EIP-155)	`2110`
Network ID	`2110`
Genesis hash	`0x96b239e015d50f5c3f11b80733e5f38c95882c072719507b7be1a59db4975457`
Launched	28 October 2025, 19:00 UTC
Testnet	None at the moment. See Testing your integration

Consensus


Algorithm	Proof of work, XHash
Target block time	600 seconds (10 minutes)
Difficulty adjustment	Every block, by ASERT (2-day half-life), since block 17,560
Finality	Probabilistic only. No checkpoints, no finality gadget
Uncles	None. A block either is on the best chain or is not
Block reward	50 LAX, halving every 210,000 blocks (about 4 years)
Reward maturity	100 blocks
Supply cap	21,000,000 LAX. No premine, no burn
Fees	Legacy gas price auction. No EIP-1559, no base fee, all fees to the miner

Addresses and transactions


Address format	20-byte hex with `0x` prefix, EIP-55 mixed-case checksum. No custom prefix, no memo or tag field
Transaction types	Legacy (type 0) and access-list (type 1). Type 2 (EIP-1559) is rejected
Replay protection	EIP-155 signatures with chain ID 2110, required by default
Plain transfer	21,000 gas
Block header	Ethereum’s, without `sha3Uncles` and with `epochStartTime`. See Block headers
EVM	Berlin. No `PUSH0`, `BASEFEE` or later opcodes. See Opcodes

Public services


Source and releases	github.com/ParallaxProtocol/parallax
Block explorer	explorer.parallaxprotocol.org
Network status	status.parallaxprotocol.org, with a JSON API
Public RPC	`https://rpc.parallaxprotocol.org`, for testing only. Run your own nodes in production
Whitepaper	parallaxprotocol.org/parallax.pdf

Supply

Any synced node reports the exact amount issued so far:

curl -s -X POST -H 'Content-Type: application/json' \
  --data '{"jsonrpc":"2.0","id":1,"method":"eth_getTotalSupply","params":[]}' \
  http://127.0.0.1:8545
# {"jsonrpc":"2.0","id":1,"result":"2985000000000000000000000"}

The result is a decimal string in wei, not hex. It is the sum of every block reward up to the head block. eth_getCirculatingSupply returns the same figure: there is no premine, treasury or lock-up, so circulating supply is total supply. Rewards still waiting out their 100-block maturity count as issued. The figure grows by the current block reward per block and never shrinks, because Parallax burns nothing.

JSON-RPC methods

Parallax serves the standard Ethereum JSON-RPC methods. These are the ones that are specific to Parallax, or that behave differently from Ethereum.

Specific to Parallax

Method	Returns
`eth_estimateSmartFee(confTarget)`	`{gasPrice, confTarget, successRate, legacyFallback}`: a gas price expected to confirm within `confTarget` blocks, from a port of Bitcoin Core’s fee estimator. See Fees
`eth_getTotalSupply()`	LAX issued up to the head block, in wei, as a decimal string
`eth_getCirculatingSupply()`	The same as `eth_getTotalSupply`

The two supply methods are also served as xhash_getTotalSupply and xhash_getCirculatingSupply.

Different from Ethereum

Method	Behaviour on Parallax
Any method taking a block tag	`latest`, `earliest` and `pending` work. `finalized` returns an error, because no block is ever finalized, and `safe` is rejected
`eth_sendRawTransaction`	Rejects type 2 transactions, transactions without EIP-155 replay protection, and transactions whose fee exceeds `--rpc.txfeecap` (1 LAX by default)
`eth_gasPrice`	The `eth_estimateSmartFee` price for a 2-block target. There is no base fee to add
`eth_maxPriorityFeePerGas`	The same value as `eth_gasPrice`. Only meaningful for type 2 transactions, which Parallax rejects
`eth_getBlockBy`, `eth_getHeaderBy`	Headers have no `sha3Uncles` or `baseFeePerGas`, and add `epochStartTime`. Blocks have no `uncles` list. See Block headers
`eth_getUncle*`	Always `null`. Kept for compatibility
`eth_getTransactionByHash`, `eth_getTransactionReceipt`	Find transactions in the last 52,560 blocks (about a year) unless the node runs with `--txlookuplimit 0`. See History and indexing

Namespaces

HTTP and WebSocket serve eth, net and web3 by default. txpool (mempool contents) and debug (tracing, needed to find transfers made by contracts) must be enabled with --http.api. See Lock down JSON-RPC before you do.

Getting Started

Integration

Settlement Risk Mitigation

Mainnet

Consensus

Addresses and transactions

Public services

Supply

JSON-RPC methods

Specific to Parallax

Different from Ethereum

Namespaces

​Mainnet

​Consensus

​Addresses and transactions

​Public services

​Supply

​JSON-RPC methods

​Specific to Parallax

​Different from Ethereum

​Namespaces

Mainnet

Consensus

Addresses and transactions

Public services

Supply

JSON-RPC methods

Specific to Parallax

Different from Ethereum

Namespaces