# Buggy code
def learn_about_announced_nodes():
    try:
        certificate_filepath = forgetful_node_storage.store_node_certificate(
            certificate=node.certificate
        )

        node.verify_node(
            this_node.network_middleware,
            accept_federated_only=this_node.federated_only,  # TODO: 466
            certificate_filepath=certificate_filepath,
        )

    # Suspicion
    except node.SuspiciousActivity as e:
        # TODO: Include data about caller?
        # TODO: Account for possibility that stamp, rather than interface, was bad.
        # TODO: Maybe also record the bytes representation separately to disk?
        message = f"Suspicious Activity about {node}: {str(e)}.  Announced via REST."
        log.warn(message)
        this_node.suspicious_activities_witnessed["vladimirs"].append(node)
    except NodeSeemsToBeDown as e:
        # This is a rather odd situation - this node *just* contacted us and asked to be verified.  Where'd it go?  Maybe a NAT problem?
        log.info(
            f"Node announced itself to us just now, but seems to be down: {node}.  Response was {e}."
        )
        log.debug(f"Phantom node certificate: {node.certificate}")
    # Async Sentinel
    except Exception as e:
        log.critical(f"This exception really needs to be handled differently: {e}")
        raise

    # Believable
    else:
        log.info("Learned about previously unknown node: {}".format(node))
        this_node.remember_node(node)
        # TODO: Record new fleet state

    # Cleanup
    finally:
        forgetful_node_storage.forget()


# Traceback (ValueError)
$ nucypher ursula confirm-activity



,ggg,         gg
dP""Y8a        88                                   ,dPYb,
Yb, `88        88                                   IP'`Yb
`"  88        88                                   I8  8I
88        88                                   I8  8'
88        88   ,gggggg,    ,g,     gg      gg  I8 dP    ,gggg,gg
88        88   dP""""8I   ,8'8,    I8      8I  I8dP    dP"  "Y8I
88        88  ,8'    8I  ,8'  Yb   I8,    ,8I  I8P    i8'    ,8I
Y8b,____,d88,,dP     Y8,,8'_   8) ,d8b,  ,d8b,,d8b,_ ,d8,   ,d8b,
"Y888888P"Y88P      `Y8P' "YY8P8P8P'"Y88P"`Y88P'"Y88P"Y8888P"`Y8


the Untrusted Re-Encryption Proxy.


Decrypting NuCypher keyring...
WARNING - No Bootnodes Available
Traceback (most recent call last):
File "/home/ubuntu/.local/share/virtualenvs/nucypher-fvStivKV/bin/nucypher", line 11, in <module>
load_entry_point('nucypher', 'console_scripts', 'nucypher')()
File "/home/ubuntu/.local/share/virtualenvs/nucypher-fvStivKV/lib/python3.6/site-packages/click/core.py", line 764, in __call__
return self.main(*args, **kwargs)
File "/home/ubuntu/.local/share/virtualenvs/nucypher-fvStivKV/lib/python3.6/site-packages/click/core.py", line 717, in main
rv = self.invoke(ctx)
File "/home/ubuntu/.local/share/virtualenvs/nucypher-fvStivKV/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/home/ubuntu/.local/share/virtualenvs/nucypher-fvStivKV/lib/python3.6/site-packages/click/core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/home/ubuntu/.local/share/virtualenvs/nucypher-fvStivKV/lib/python3.6/site-packages/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "/home/ubuntu/.local/share/virtualenvs/nucypher-fvStivKV/lib/python3.6/site-packages/click/decorators.py", line 64, in new_func
return ctx.invoke(f, obj, *args, **kwargs)
File "/home/ubuntu/.local/share/virtualenvs/nucypher-fvStivKV/lib/python3.6/site-packages/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "/home/ubuntu/nucypher/nucypher/cli/config.py", line 219, in wrapper
return func(config, *args, **kwargs)
File "/home/ubuntu/nucypher/nucypher/cli/characters/ursula.py", line 268, in ursula
client_password=client_password)
File "/home/ubuntu/nucypher/nucypher/cli/actions.py", line 288, in make_cli_character
**config_args)
File "/home/ubuntu/nucypher/nucypher/config/node.py", line 215, in __call__
return self.produce(**character_kwargs)
File "/home/ubuntu/nucypher/nucypher/config/characters.py", line 103, in produce
merged_parameters = self.generate_parameters(**overrides)
File "/home/ubuntu/nucypher/nucypher/config/node.py", line 284, in generate_parameters
merged_parameters = {**self.static_payload(), **self.dynamic_payload, **overrides}
File "/home/ubuntu/nucypher/nucypher/config/characters.py", line 98, in dynamic_payload
return {**super().dynamic_payload, **payload}
File "/home/ubuntu/nucypher/nucypher/config/node.py", line 385, in dynamic_payload
self.read_known_nodes()   # Requires a connected blockchain to init Ursulas.
File "/home/ubuntu/nucypher/nucypher/config/node.py", line 260, in read_known_nodes
known_nodes = self.node_storage.all(federated_only=self.federated_only)
File "/home/ubuntu/nucypher/nucypher/config/storages.py", line 415, in all
federated_only=federated_only)  # TODO: 466
File "/home/ubuntu/nucypher/nucypher/config/storages.py", line 384, in __read_metadata
node = Ursula.from_bytes(node_bytes, registry=registry, federated_only=federated_only)
File "/home/ubuntu/nucypher/nucypher/characters/lawful.py", line 1175, in from_bytes
ursula = cls.from_public_keys(registry=registry, federated_only=federated_only, **node_info)
File "/home/ubuntu/nucypher/nucypher/characters/base.py", line 310, in from_public_keys
return cls(is_me=False, federated_only=federated_only, crypto_power=crypto_power, *args, **kwargs)
File "/home/ubuntu/nucypher/nucypher/characters/lawful.py", line 831, in __init__
**character_kwargs)
File "/home/ubuntu/nucypher/nucypher/characters/base.py", line 116, in __init__
raise ValueError(f"Pass either federated only or registry.  Got '{federated_only}'. '{registry}'")
ValueError: Pass either federated only or registry.  Got 'None'. 'None'
Sentry is attempting to send 0 pending error messages
Waiting up to 2.0 seconds
Press Ctrl-C to quit

# Fixed code
def learn_about_announced_nodes():
    try:
        certificate_filepath = forgetful_node_storage.store_node_certificate(
            certificate=node.certificate
        )

        node.verify_node(
            this_node.network_middleware,
            registry=this_node.registry,
            certificate_filepath=certificate_filepath,
        )

    # Suspicion
    except node.SuspiciousActivity as e:
        # TODO: Include data about caller?
        # TODO: Account for possibility that stamp, rather than interface, was bad.
        # TODO: Maybe also record the bytes representation separately to disk?
        message = f"Suspicious Activity about {node}: {str(e)}.  Announced via REST."
        log.warn(message)
        this_node.suspicious_activities_witnessed["vladimirs"].append(node)
    except NodeSeemsToBeDown as e:
        # This is a rather odd situation - this node *just* contacted us and asked to be verified.  Where'd it go?  Maybe a NAT problem?
        log.info(
            f"Node announced itself to us just now, but seems to be down: {node}.  Response was {e}."
        )
        log.debug(f"Phantom node certificate: {node.certificate}")
    # Async Sentinel
    except Exception as e:
        log.critical(f"This exception really needs to be handled differently: {e}")
        raise

    # Believable
    else:
        log.info("Learned about previously unknown node: {}".format(node))
        this_node.remember_node(node)
        # TODO: Record new fleet state

    # Cleanup
    finally:
        forgetful_node_storage.forget()