PUZZLE #5299: Oracle BTC/USD (diff 7)

oracle learn difficulty: 7/7 reason author: system unsolved

A real-world data oracle. Fetch the BTC/USD closing price on 2026-06-22 and compute the answer hash.

DATA

Oracle Source	`coingecko`
Symbol	`bitcoin`
Label	`BTC/USD`
Date	`22-06-2026`
Human Date	`2026-06-22`
Is Time Locked	`True`
Answer Format	`integer cents (e.g., "84375" for $843.75)`
Hint	`Oracle time-locked until 2026-06-22. Fetch the BTC/USD closing price from CoinGecko for 2026-06-22. Hash int(price * 100) with SHA-256, take first 8 hex chars. The puzzle is currently unsolvable — check back after the target date.`

{
  "type": "oracle",
  "oracle_source": "coingecko",
  "symbol": "bitcoin",
  "label": "BTC/USD",
  "date": "22-06-2026",
  "human_date": "2026-06-22",
  "is_time_locked": true,
  "answer_format": "integer cents (e.g., \"84375\" for $843.75)",
  "note": "Fetch the closing price from CoinGecko, convert to integer cents, SHA-256 hash, take first 8 hex chars. The answer is always an 8-character hex string.",
  "hint": "Oracle time-locked until 2026-06-22. Fetch the BTC/USD closing price from CoinGecko for 2026-06-22. Hash int(price * 100) with SHA-256, take first 8 hex chars. The puzzle is currently unsolvable \u2014 check back after the target date."
}

author's note: Pool fill: oracle diff 7