Mempool Monitoring for Pay to Address

[Kodylow]

1. Degrade/Stop Watching for an address (see btcpay's timeout config)
2. Lightweight way to scan for a group of addresses?

• Get blocks to scan as background process

[Kodylow]

• after 60m, we fall back to the on-block check
  https://mempool.space/api/address/<addr?txs | jq
  [
  txid:
  {
  vout: [{
  scriptpubkey:
  scriptpubkey_asm:
  scriptpubkey_type:
  scriptpubkey_address:
  value: (satoshis)
  }]
  status: { confirmed: true/false}
  }
  ]