Function ChainTip

examples/wallet-tracker.js:28–30

(block_height, block_hash)

  const listeners = {
    ChainTip (block_height, block_hash) {
      console.log(`chain tip updated to ${block_height} ${block_hash}`)
    },

    async Transaction (txid, block_height) {
      const tx = await bwt('tx', txid)