ChainQueryBitcoin Intelligence
chainquery.com ↗

Premium Bitcoin on-chain intelligence from an independent node. Pay per call in USDC over x402. No account, no API key.

What this is

The unique-data tier: fee pressure, coin-days-destroyed spikes, per-address balance + quantum exposure + labels, the weekly rich list, coin velocity, and HODL waves. Computed on ChainQuery's own infrastructure — not a node-RPC reseller. For raw Bitcoin Core JSON-RPC, see x402.chainquery.com.

How payment works

Every paid call follows the x402 flow: you request an endpoint, the server replies HTTP 402 with the payment terms (USDC on Base), your x402 client signs and pays, and the server returns the data. Per call, gasless for the buyer. Every response carries as_of + refreshes_at so you know the data's freshness.

Endpoints
/v1/fee-pressure$0.005
Live mempool fee-pressure signal (state low/moderate/high/severe + score in sat/vB).
/v1/cdd$0.01
Coin Days Destroyed (CDD) spike classifier (state normal/elevated/spike/extreme + z-score vs 30-day baseline).
/v1/address/{addr}$0.01
Per-address balance, received/spent flows, quantum exposure, and best-effort labels/tags.
/v1/richlist$0.01
Top 10 addresses by balance from the weekly UTXO-set snapshot, with labels.
/v1/richlist/top100$0.05
Top 100 addresses by balance from the weekly UTXO-set snapshot, with labels.
/v1/coin-velocity$0.01
90- and 365-day rolling coin-velocity time series derived from CDD and supply.
/v1/hodl-waves$0.02
Full HODL-waves history: supply split across 12 age bands per weekly snapshot.
Example
GET https://intel.chainquery.com/v1/fee-pressure

The first response is 402 with the payment terms; an x402 client settles and retries automatically.

Settlement in USDC on Base · operated by chainquery.com · machine catalog at /v1 · Bitcoin Core RPC at x402.chainquery.com