{
 "measured_utc": "2026-08-13 14:41 UTC",
 "chain": "Base",
 "token": "USDC",
 "event": "AuthorizationUsed (EIP-3009)",
 "head_block": 49921357,
 "samples": [
  {
   "from_block": 49920857,
   "to_block": 49921357,
   "events": 7667,
   "hours_ago": 0.0,
   "per_minute": 460.0
  },
  {
   "from_block": 49913657,
   "to_block": 49914157,
   "events": 2148,
   "hours_ago": 4.0,
   "per_minute": 128.9
  },
  {
   "from_block": 49906457,
   "to_block": 49906957,
   "events": 1765,
   "hours_ago": 8.0,
   "per_minute": 105.9
  },
  {
   "from_block": 49899257,
   "to_block": 49899757,
   "events": 2229,
   "hours_ago": 12.0,
   "per_minute": 133.7
  },
  {
   "from_block": 49892057,
   "to_block": 49892557,
   "events": 1888,
   "hours_ago": 16.0,
   "per_minute": 113.3
  },
  {
   "from_block": 49884857,
   "to_block": 49885357,
   "events": 2330,
   "hours_ago": 20.0,
   "per_minute": 139.8
  },
  {
   "from_block": 49877657,
   "to_block": 49878157,
   "events": 2568,
   "hours_ago": 24.0,
   "per_minute": 154.1
  }
 ],
 "median_per_minute": 133.7,
 "implied_per_day": 192527,
 "implied_per_30d": 5775839,
 "caveats": [
  "EIP-3009 gasless authorizations are the mechanism x402 settles with, but not exclusively x402 \u2014 other gasless USDC flows use the same event.",
  "Base only. x402 also settles on Solana, which this does not count.",
  "Sampled windows of 500 blocks, not a full census. Activity is bursty."
 ]
}