Sign and record the current chain head

curl --request POST \
  --url https://{tenant}.aws.cognee.ai/api/v1/provenance/anchor \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://{tenant}.aws.cognee.ai/api/v1/provenance/anchor"

headers = {"Authorization": "Bearer <token>"}

response = requests.post(url, headers=headers)

print(response.text)

{}