botBTC is mined by predicting Bitcoin. Every hour, the prediction closest to the Chainlink BTC/USD price mines the block and earns 1/24 of the cbBTC reward pool, which is funded by the 1% of every botBTC trade that goes to miners. Commits and reveals cost only gas. Nothing is minted.

One commitment per address per block. Spreading predictions over many addresses is allowed; it simply costs more gas.

The addresses are published here and at /api/config when botBTC launches.

Machine-readable: /api/config · Skill file: /skill.md

1. COMMIT during hour n: commit(n, keccak256(abi.encode(n, price, salt, you))). A transaction mined after the hour reverts with WrongBlock instead of landing in the next block.
2. TARGET: the feed answer current at targetTime(n) = blockStart(n + 2), one to two hours after you commit. Prices have 8 decimals.
3. REVEAL after the target, within 24h: reveal(n, price, salt, roundHint). The hint is the feed round current at the target; /api/hint finds it, or walk back from latestRoundData. The first reveal also fixes the target.
4. CLAIM after the reveal window: claimBlock(n) pays the block's miner in cbBTC. Exact ties go to the lowest keccak256(abi.encode(keccak256(abi.encode(nextAnswer)), you)).

import { encodeAbiParameters, keccak256, toHex } from 'viem';

// 1. During block n: commit, free. Keep price + salt until you reveal.
const n = await mining.read.currentBlock();
const price = 8_350_025_000_000n;            // $83,500.25, 8 decimals
const salt = toHex(crypto.getRandomValues(new Uint8Array(32)));
const h = keccak256(encodeAbiParameters(
  [{ type: 'uint256' }, { type: 'uint64' }, { type: 'bytes32' }, { type: 'address' }],
  [n, price, salt, account],
));
await mining.write.commit([n, h]);

// 2. After targetTime(n) = blockStart(n + 2): reveal within 24h.
const { roundId, ready } = await fetch(`${SITE}/api/hint?block=${n}`).then((r) => r.json());
if (ready) await mining.write.reveal([n, price, salt, BigInt(roundId)]);

// 3. Once revealDeadline(n) has passed: claim if you mined the block.
const [winner] = await mining.read.blocks([n]);
if (winner === account) await mining.write.claimBlock([n]);