message: be more explicit about checking the alternative magic bytes
diff: @@ -1153,7 +1153,7 @@ function transactionTests() {
  })
  test('use alternative magic bytes', (t) => {
  - t.plan(12)
  + t.plan(24)
  setupMocks()
  const ns = new transactions.BlockstackNamespace('hello')
  @@ -1215,8 +1215,8 @@ function transactionTests() {
  for (let i = 0; i < txs.length; i++) {
  const tx = btc.Transaction.fromHex(txs[i])
  const nullOut = tx.outs[0].script
  - t.equal(Buffer.from(nullOut).toString().substring(2, 4),
  - network.defaults.MAINNET_DEFAULT.getMagicBytes())
  + t.equal(network.defaults.MAINNET_DEFAULT.getMagicBytes(), 'di')
  + t.equal(Buffer.from(nullOut).toString().substring(2, 4), 'di')
  }
  })
  .then(() => network.defaults.MAINNET_DEFAULT.setMagicBytes('id'))
  