title: What real EIP-1559 base fee on polygon chain?
body: <p>When I call the <code>fee_history</code> method from the <a href="https://github.com/ethereum/web3.py" rel="nofollow noreferrer">web3 library</a>, the <code>polygon</code> node returns a non-null <a href="https://eips.ethereum.org/EIPS/eip-1559" rel="nofollow noreferrer">EIP-1559</a> base fee. However, on <a href="https://polygonscan.com/gastracker" rel="nofollow noreferrer">https://polygonscan.com/gastracker</a> we see a base fee equal to 0. Same on <a href="https://polygonscan.com/blocks" rel="nofollow noreferrer">https://polygonscan.com/blocks</a>.</p>
  <p>Request on <code>eth_feeHistory</code>:</p>
  <pre class="lang-py prettyprint-override"><code>{'jsonrpc': '2.0', 'id': 0, 'result': {'baseFeePerGas': ['0x73', '0x6c', '0x64', '0x5e', '0x5b'], 'gasUsedRatio': [0.2267586, 0.2028314, 0.2325742, 0.3555376], 'oldestBlock': '0x17cc92e', 'reward': [['0x9502f8f8d', '0x9502f8f8d', '0x2ea19dccfc'], ['0x89d5f3011', '0x9502f9000', '0xba43b7394'], ['0x9502f9000', '0xba43b739c', '0x19d81d959c'], ['0x89d5f2ed7', '0x8d8f9fb82', '0xcce4165a2']]}}
  </code></pre>
  <p>We see that the base fee is equal to <code>[115, 108, 100, 94, 91]</code>. It's on <a href="https://infura.io" rel="nofollow noreferrer">infura</a>.
  But local node returns 22 Wei as the base fee for the next block.</p>
  <p>What is the real base fee on polygon chain, zero or not? If not zero, why the base fee is so small, like 90 Wei? And why does a local node always return 22 Wei as the base fee?</p>
  <h2>UPDATE:</h2>
  <p>Ok, now I see that the base fee will appear on the Polygonscan. But the question remains why a local node can return 22 Wei?</p>