Coverage Levels

Each chain has a coverage level indicating what data is available.

Levels

Level	Description	Endpoints available
FULLY_INDEXED	Block-by-block indexing with all transaction types	All wallet, balance, transfer, and blockchain endpoints
PARTIALLY_INDEXED	Indexed but missing some data (e.g., no internal txs)	Wallet transfers and balances, no traces
EXPLORER_API	Data fetched on-demand from block explorer APIs	Wallet transfers (may be slower), balances
SANCTIONS_ONLY	Only sanctions screening available	Screening endpoints only

What "fully indexed" means

• Every block processed and stored
• Normal transactions, internal transactions, and token transfers all captured
• Balance snapshots available at any block height
• Sub-second latency for all queries
• Trace data available (if chain supports it)

Explorer API chains

For chains in EXPLORER_API mode:

• Data is fetched from the chain's block explorer on demand
• Response times are higher (100-500ms vs 10-50ms for indexed chains)
• Rate limits from upstream explorers may apply
• Historical data depth depends on the explorer

Checking chain status

curl https://api.cryptachain.com/v1/status/chains

Each chain in the response includes:

• indexing_status — current coverage level
• latest_block — most recent indexed block
• sync_lag_blocks — how far behind the chain tip
• is_healthy — whether the chain is operational