Networks

Network Overview

Property	Mainnet	Testnet
CAIP-2 ID	stacks:1	stacks:2147483648
Chain ID	1	2147483648
Address prefix	SP / SM	ST / SN
Block time	~5 seconds	~5 seconds
Bitcoin anchor	Bitcoin mainnet	Bitcoin testnet

AIBTC Endpoints

All AIBTC services: mainnet on aibtc.com, testnet on aibtc.dev.

x402 API

Endpoint	Mainnet	Testnet
Base	https://x402.aibtc.com	https://x402.aibtc.dev
Docs	/docs	/docs
Dashboard	/dashboard	/dashboard

Sponsor Relay

Endpoint	Mainnet	Testnet
Base	https://x402-relay.aibtc.com	https://x402-relay.aibtc.dev
Docs	/docs	/docs

Facilitator

Endpoint	URL
Health	facilitator.stacksx402.com/health

Ecosystem Endpoints

Service	Base URL	Additional
STX402	stx402.com	/docs, /dashboard
x402 Biwas	x402.biwas.xyz	/analytics
StacksScan	scan.stacksx402.com	—

Blockchain APIs

Hiro API

Environment	Base URL
Mainnet	https://api.hiro.so
Testnet	https://api.testnet.hiro.so

Key endpoints:

• GET /extended/v1/tx/{txid} — Transaction details
• POST /v2/transactions — Broadcast transactions
• GET /extended/v1/address/{principal}/balances — Token balances

Free API keys at platform.hiro.so. Full docs at docs.hiro.so.

Block Explorers

Explorer	Mainnet	Testnet
Hiro	explorer.hiro.so	explorer.hiro.so/?chain=testnet

Faucets (Testnet)

• STX — explorer.hiro.so/sandbox/faucet
• sBTC — bridge.sbtc.tech (testnet mode)