Crypto ETF Sentinel /v1/xbrl/fee-war/history
https://api.cryptoetfsentinel.com/v1/xbrl/fee-war/historyOverview
Crypto ETF Sentinel — Quarterly fee-war progression: average and median expense ratios over time across the US spot crypto ETF trading cohort, with per-issuer detail each quarter. Use when documenting how fee competition has compressed since the January 2024 spot Bitcoin ETF launch. Optional crypto filter.
Protocol
x402
Price
—
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
finance/regulatory
Provider
cryptoetfsentinel
Source
bazaar
Indexed
2026-05-12 14:55:50
Health
Status
healthy
Latency (p50)
41ms
Uptime (30d)
100.0%
Reliability Score
100/100
Last Checked
2026-09-08 09:54:06
Last Healthy
2026-09-08 09:54:06
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-08 09:54:06 | healthy | 402 | 38ms | |
| 2026-09-07 16:41:06 | healthy | 402 | 41ms | |
| 2026-09-07 07:41:05 | healthy | 402 | 40ms | |
| 2026-09-06 22:08:17 | healthy | 402 | 49ms | |
| 2026-09-06 15:58:37 | healthy | 402 | 39ms | |
| 2026-09-06 08:30:04 | healthy | 402 | 77ms | |
| 2026-09-06 00:02:22 | healthy | 402 | 42ms | |
| 2026-09-05 17:08:16 | healthy | 402 | 77ms | |
| 2026-09-05 12:58:26 | healthy | 402 | 38ms |