Network Topology

Port Allocation

ELA Main Chain Node

Port	Protocol	Service
20338	TCP	P2P network (block/tx propagation, peer discovery)
20339	TCP	DPoS P2P (validator proposal/vote/confirm messages)
20333	HTTP	Node info web page
20334	HTTP	REST API
20335	WS	WebSocket notifications
20336	HTTP	JSON-RPC

ESC (Elastos Smart Chain) Node

Port	Protocol	Service
20638	TCP	P2P (devp2p, Ethereum-style)
20636	HTTP	JSON-RPC
20632	WS	WebSocket

EID (Elastos Identity Chain) Node

Port	Protocol	Service
20648	TCP	P2P (devp2p)
20646	HTTP	JSON-RPC
20642	WS	WebSocket

Carrier v2

Port	Protocol	Service
39001	UDP	Kademlia DHT messages
39002	TCP	Active Proxy relay

Arbiter

The Arbiter daemon exposes its own ports and communicates with other chain nodes:

Port	Protocol	Purpose
20536	TCP	Arbiter JSON-RPC
20538	TCP	Arbiter REST / P2P

• Outbound to ELA main chain node via JSON-RPC (port 20336)
• Outbound to ESC/EID nodes via JSON-RPC (ports 20636/20646)
• P2P via the DPoS P2P network (port 20339)

JSON-RPC Endpoints (ELA Main Chain)

Node Management

Method	Description
setloglevel	Change log verbosity
getinfo	Node info (height, version, connections)
getnodestate	Connected peer details
getneighbors	List neighbor addresses
getconnectioncount	Number of connected peers

Block Queries

Method	Description
getblock	Get block by hash
getblockbyheight	Get block by height
getcurrentheight	Current chain height
getblockhash	Hash for a given height
getbestblockhash	Tip block hash
getblockcount	Total block count
getconfirmbyheight	DPoS confirm at height
getconfirmbyhash	DPoS confirm by hash

Transaction Operations

Method	Description
getrawtransaction	Get tx by hash (raw or verbose)
getrawmempool	List mempool transactions
sendrawtransaction	Broadcast signed transaction
gettransactionbyheight	All txs in a block
decoderawtransaction	Decode raw tx hex

Wallet / UTXO

Method	Description
getreceivedbyaddress	Total received by address
getutxosbyamount	Find UTXOs for spending
listunspent	List unspent outputs
getamountbyinputs	Total value of inputs
getbalancebyaddr	Address balance
getunspends	Unspent outputs for address
createrawtransaction	Build unsigned transaction
signrawtransactionwithkey	Sign transaction

Mining / AuxPoW

Method	Description
createauxblock	Create aux block for merged mining
submitauxblock	Submit solved aux block
getmininginfo	Mining statistics
togglemining	Start/stop internal miner
discretemining	Mine specific number of blocks

BPoS / Validators

Method	Description
listproducers	All registered producers + votes
getproducerinfo	Specific producer details
producerstatus	Producer registration status
getarbitratorgroupbyheight	Active arbiters at height
getarbitersinfo	Current arbiter details
getarbiterpeersinfo	DPoS P2P peer info
votestatus	Voting statistics
getdepositcoin	Producer deposit info

BPoS / Staking

Method	Description
getalldetaileddposv2votes	Detailed v2 vote info
getvoterights	Voter's rights by address
dposv2rewardinfo	V2 BPoS voter reward info
getdposv2info	BPoS system info
estimatesmartfee	Fee estimation

Elastos DAO

Method	Description
listcrcandidates	All Elastos Council candidates
listcurrentcrs	Current Elastos Council members
listnextcrs	Next term Elastos Council members
listcrproposalbasestate	Proposal states
getcrproposalstate	Specific proposal state
getproposaldraftdata	Proposal draft data
getsecretarygeneral	Current secretary general
getcrrelatedstage	Elastos Council voting/election stage
getcommitteecanuseamount	Available Elastos DAO funds
getcrdepositcoin	Elastos Council member deposit info

Cross-Chain

Method	Description
getexistwithdrawtransactions	Pending withdrawals
getexistreturndeposittransactions	Return deposits
submitsidechainillegaldata	Report sidechain fraud
getsmallcrosstransfertxs	Small cross-chain txs
getcrcpeersinfo	Elastos Council arbiter P2P info
getcrosschainpeersinfo	Cross-chain peer info
getregistertransactionsbyheight	Sidechain registrations

NFT

Method	Description
getcandestroynftids	NFTs eligible for destruction
getnftinfo	NFT information

ESC/EID RPC

ESC and EID expose standard Ethereum JSON-RPC methods (eth_*, net_*, web3_*) plus custom methods:

ESC-specific:

Method	Description
sendrechargetransaction	Process deposit from main chain (by tx hash)
sendsmallcrosstransaction	Process small cross-chain deposit
getwithdrawtransactionsbyheight	Scan for withdraw txs at height
getexistdeposittransactions	Check existing deposits
getfaileddeposittransactions	Get failed deposits
getillegalevidencebyheight	Get illegal evidence at height
getnftdestroytransactionsbyheight	Scan for NFT destroy txs
createauxblock	Create aux block for merged mining
submitsideauxblock	Submit merged mining proof

EID-specific:

Method	Description
did_resolveDID	Resolve a DID to its document
did_listDIDs	List published DIDs

DNS Seeds (Mainnet)

ELA Main Chain:
    192.0.2.10:20338
    192.0.2.11:20338
    192.0.2.12:20338
    192.0.2.13:20338

Hive Node API

Base URL: https://<hive-node>/api/v2/

Prefix	Purpose
/did/signin	DID authentication initiation
/did/auth	DID authentication completion
/vault/db/*	Database operations (MongoDB)
/vault/files/*	File operations (IPFS)
/vault/scripting/*	Script registration and execution
/vault/backup/*	Backup and migration
/payment/*	Payment order management
/subscription/*	Vault subscription management
/provider/*	Node operator admin
/about	Node version and info