title: How to calculate the total volume transacted for a token on RSK?
body: <p>I would like to be able to find out the total volume transacted for RDOC,
  from deployment until now.</p>
  <p>Unable to get this information from the block explorer:
  <a href="https://explorer.rsk.co/address/0x2d919f19d4892381d58edebeca66d5642cef1a1f" rel="noreferrer"><code>0x2d919f19d4892381d58edebeca66d5642cef1a1f</code></a></p>
  <p>What's the best way to get this using RPC or web3.js?</p>