Compute bitcoin stats like inflation, issued coins, rewards, and approximate halving date

gistfile1.txt

function computeBitcoinStats() {
  const formatterNumer = new Intl.NumberFormat("en-US", {});
  const formatterPercent = new Intl.NumberFormat("en-US", {
    maximumFractionDigits: 4,
  });
  const formatterDate = new Intl.DateTimeFormat("en-US", {
    month: "long",
    year: "numeric",
  });
  let height = 0;
  let lastReward = 0;
  let issued = 0;
  const SATS_IN_BTC = 100_000_000;
  const GENESIS_BLOCK_HEIGHT = 1231006505000;
  const BLOCKS_IN_YEAR = 144 * 365;

  while (true) {
    const epoch = Math.floor(height / 210_000) + 1;
    const reward = Math.floor((50 / 2 ** (epoch - 1)) * SATS_IN_BTC);
    issued += reward;

    if (reward !== lastReward) {
      console.log({
        epoch: formatterNumer.format(epoch),
        height: formatterNumer.format(height),
        reward: formatterNumer.format(reward / SATS_IN_BTC),
        rewardSats: formatterNumer.format(reward),
        issuedSats: formatterNumer.format(issued),
        issuedBtc: formatterNumer.format(issued / SATS_IN_BTC),
        satsUntil21M: formatterNumer.format(21_000_000 * SATS_IN_BTC - issued),
        inflationRate:
          formatterPercent.format(((reward * BLOCKS_IN_YEAR) / issued) * 100) +
          "%",
        date: formatterDate.format(
          new Date(GENESIS_BLOCK_HEIGHT + height * 10 * 60 * 1000),
        ),
      });
      lastReward = reward;
    }

    if (issued >= 21_000_000 * SATS_IN_BTC) {
      console.log({ issued });
      break;
    }

    if (height > 10_000_000) {
      console.log("Aborting due to reaching block height 10m");
      console.log({
        issuedSats: formatterNumer.format(issued),
        issuedBtc: formatterNumer.format(issued / SATS_IN_BTC),
        satsUntil21M: formatterNumer.format(21_000_000 * SATS_IN_BTC - issued),
      });
      break;
    }

    height++;
  }
}

computeBitcoinStats();

Compute bitcoin stats like inflation, issued coins, rewards, and approximate halving date. This is a proof of concept to calculate whether it is possible to reach the acclaimed 21 million BTC (It is not).