Etherscan vs Helium

Etherscan's API exposes the same account balances, transactions, contract source, and gas-tracker data shown on the block explorer, addressed to Ethereum mainnet and its testnets through a single query-parameter-based endpoint. Calls against the older V1 endpoint now return a deprecation notice pointing at the documented V2 migration, so new integrations should build against V2 directly. Free-tier keys cover light use, with paid plans unlocking higher rate limits.

Helium's original Layer-1 blockchain was retired in an April 2023 migration to Solana, and the network's chain data now ships only as bulk Postgres/CSV snapshots over torrent or a requestor-pays S3 bucket rather than a queryable API. The one remaining live HTTP endpoint is the free Entity API, which returns a Hotspot's owner, asserted (H3-obfuscated) location, and on-chain asset IDs by wallet public key. It carries no uptime guarantee and is meant for light lookups, not production traffic.