The problem

Bitcoin sensor stopped working.
Thanks and great work!

What version of Home Assistant Core has the issue?

core-2024.5.4

What was the last working version of Home Assistant Core?

core-2024.5.4

What type of installation are you running?

Home Assistant Container

Integration causing the issue

sensor.exchange_rate_1_btc

Link to integration documentation on our website

https://www.home-assistant.io/integrations/bitcoin/

Diagnostics information

No response

Example YAML snippet

sensor:
  - platform: bitcoin
    display_options:
      - exchangerate
      - trade_volume_btc

Anything in the logs that might be useful for us?

`2024-05-19 13:21:08.367 ERROR (MainThread) [homeassistant.components.sensor] Error while setting up bitcoin platform for sensor
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/urllib/request.py", line 1344, in do_open
    h.request(req.get_method(), req.selector, req.data, headers,
  File "/usr/local/lib/python3.12/http/client.py", line 1331, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/local/lib/python3.12/http/client.py", line 1377, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.12/http/client.py", line 1326, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.12/http/client.py", line 1085, in _send_output
    self.send(msg)
  File "/usr/local/lib/python3.12/http/client.py", line 1029, in send
    self.connect()
  File "/usr/local/lib/python3.12/http/client.py", line 1465, in connect
    super().connect()
  File "/usr/local/lib/python3.12/http/client.py", line 995, in connect
    self.sock = self._create_connection(
                ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/socket.py", line 828, in create_connection
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/socket.py", line 963, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
socket.gaierror: [Errno -3] Try again
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 356, in _async_setup_platform
    await asyncio.shield(awaitable)
  File "/usr/local/lib/python3.12/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/bitcoin/sensor.py", line 150, in setup_platform
    if currency not in exchangerates.get_ticker():
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/blockchain/exchangerates.py", line 17, in get_ticker
    response = util.call_api('ticker' if api_code is None else 'ticker?api_code=' + api_code)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/blockchain/util.py", line 26, in call_api
    response = urlopen(base_url + resource, payload, timeout=TIMEOUT).read()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/urllib/request.py", line 215, in urlopen
    return opener.open(url, data, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/urllib/request.py", line 515, in open
    response = self._open(req, data)
               ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/urllib/request.py", line 532, in _open
    result = self._call_chain(self.handle_open, protocol, protocol +
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/urllib/request.py", line 492, in _call_chain
    result = func(*args)
             ^^^^^^^^^^^
  File "/usr/local/lib/python3.12/urllib/request.py", line 1392, in https_open
    return self.do_open(http.client.HTTPSConnection, req,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/urllib/request.py", line 1347, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [Errno -3] Try again>`

Additional information

No response

bitcoin documentation
bitcoin source

Closing the issue. It was a DNS problem due to recent changes.