GET /v1/markets/:id/book/at/:ts

# Book 1 hour ago
TS=$(($(date +%s) - 3600))000000
curl -H "X-API-Key: hip4_live_..." \
  "https://hip4.polynode.dev/api/v1/markets/0/book/at/${TS}?levels=10"

# Book at the moment of a specific trade
TID_TIME_US=1777745780036000
curl -H "X-API-Key: hip4_live_..." \
  "https://hip4.polynode.dev/api/v1/markets/0/book/at/$((TID_TIME_US - 1))"

import requests, time

# Hourly book snapshots over the last 6 hours
addr = "https://.../api/v1/markets/0/book/at"
now_us = int(time.time()) * 1_000_000
for hours_ago in range(0, 7):
    ts = now_us - (hours_ago * 3600 * 1_000_000)
    r = requests.get(f"{addr}/{ts}", headers={"X-API-Key": key},
                     params={"levels": 1}).json()
    yes = r["sides"][0]
    print(f"{hours_ago}h ago: bid={yes['best_bid']} ask={yes['best_ask']} "
          f"orders={r['resting_orders_count']}")

// Replay book at every fill in the last 100 trades
const trades = await fetch(
  `https://.../api/v1/markets/0/trades?limit=100`,
  { headers: { 'X-API-Key': key } }
).then(r => r.json())

for (const t of trades.trades.slice(0, 5)) {
  const tsBeforeFill = t.at.us - 1
  const book = await fetch(
    `https://.../api/v1/markets/0/book/at/${tsBeforeFill}?levels=1&side=${t.side_index}`,
    { headers: { 'X-API-Key': key } }
  ).then(r => r.json())
  const yes = book.sides[0]
  console.log(`fill @${t.px} sz=${t.sz} | book pre-fill: ${yes.best_bid} / ${yes.best_ask}`)
}