# Chain IDs and Endpoints

# Chain IDs

Network	Chain ID
Mainnet	`384da888112027f0321850a169f737c33e53b388aad48b5adace4bab97f437e0`
Testnet	`71ee83bcf52142d61019d95f9cc5427ba6a0d7ff8accd9e2088ae2abeaf3d3dd`

# Mainnet API Endpoints

Last verified: January 2026

https://api.protonnz.com
https://proton.protonuk.io
https://proton.eosusa.io
https://proton.cryptolions.io
https://proton.eoscafeblock.com
https://api.totalproton.tech
https://mainnet.brotonbp.com
https://proton.eu.eosamsterdam.net
https://protonapi.blocksindia.com
https://api-xprnetwork-main.saltant.io
https://protonapi.ledgerwise.io
https://proton-api.eosiomadrid.io
https://proton.genereos.io
https://api-proton.nodeone.network:8344
https://proton-public.neftyblocks.com
https://api-proton.eosarabia.net
https://api.luminaryvisn.com

# Mainnet Hyperion (History) Endpoints

https://proton.protonuk.io
https://api-xprnetwork-main.saltant.io

# Testnet API Endpoints

Last verified: January 2026

https://test.proton.eosusa.io
https://testnet-api.alvosec.com
https://proton-testnet.cryptolions.io
https://testnet.brotonbp.com
https://testnet-api.xprcore.com
https://protontest.eu.eosamsterdam.net
https://api-xprnetwork-test.saltant.io
https://testnet-api.xprdata.org
https://testnet.rockerone.io

# Usage Examples

# JavaScript/TypeScript

import { JsonRpc } from '@proton/js';

// Mainnet
const mainnetRpc = new JsonRpc('https://proton.eosusa.io');

// Testnet
const testnetRpc = new JsonRpc('https://testnet-api.alvosec.com');

# With Multiple Endpoints (Fault Tolerance)

const endpoints = [
  'https://proton.eosusa.io',
  'https://api.protonnz.com',
  'https://proton.cryptolions.io'
];

// The SDK will automatically failover to the next endpoint if one fails

# CLI

# Set mainnet endpoint
proton chain:set proton
proton endpoint:set https://proton.eosusa.io

# Set testnet endpoint
proton chain:set proton-test
proton endpoint:set https://testnet-api.alvosec.com

# P2P Peer Addresses

For node operators running XPR Network nodes, P2P peer configurations are available in the official repositories:

Mainnet: xpr.start (opens new window)
Testnet: xpr-testnet.start (opens new window)

# Endpoint Health

To check if an endpoint is healthy:

curl -s https://proton.eosusa.io/v1/chain/get_info | jq '.head_block_num'

A healthy endpoint will return the current head block number.

# Validating Endpoints

This documentation includes a link checker script. Run it to verify all endpoints:

# Check all API endpoints
npm run check-endpoints

# Check all documentation links
npm run check-docs-links

# Check everything
npm run check-links

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