Blockscout vs Steem

Blockscout is the open-source, EVM-compatible block explorer behind dozens of public chain explorers (Ethereum mainnet, its L2s, and more), and its REST v2 API exposes the same block, address, token, and transaction data that powers those explorer UIs. No signup or API key is required for the per-instance hosted public REST API, though anonymous callers are rate-limited per endpoint (confirmed live: `x-ratelimit-limit` varies by route, e.g. 180 on an address lookup vs. 10 on `/stats`); docs.blockscout.com also flags this per-instance API for deprecation in favor of a separate, paid, API-key-gated multichain "PRO API," though the free per-instance API this entry tracks was still live and keyless as of this run's probe. Every response is JSON.

Steem's public JSON-RPC API lets any client read blocks, accounts, and the blogging/social content the chain stores, using the same condenser_api methods the steemit.com frontend calls. The endpoint is HTTPS-only now — the old plain-HTTP address no longer connects — and needs no signup or key for read access. Every route tested returned CORS headers open to browser-based callers.