insidercable — Spot bitcoin ETF creation/redemption flows. Point-in-time records: every row carries observed_at (when this pipeline first saw it) separately from happened_at (when the event occurred). Pay per call, USDC on Base or Arbitrum; the same query grammar as the free tier, without the delay or the cap.
Api EndpointBlockchain And CryptoHealthy · 1213 ms0.005 USDC0.005 USDC · eip155:8453 · USDC0.005 USDC · eip155:42161 · USDC
https://insidercable.com/paid/feed/etf_flows