Simple Hash is removed.

README.rst

@@ -55,7 +55,6 @@ You can then use the examples code to create assets (see examples directory):
     from os import getenv
 
     from archivist.archivist import Archivist
-    from archivist.proof_mechanism import ProofMechanism
 
 
     def create_asset(arch):
@@ -85,21 +84,13 @@ You can then use the examples code to create assets (see examples directory):
             # it does not start with arc_
         }
         #
-        # Select the mechanism used to prove evidence for the asset.  If the selected proof
-        # mechanism is not enabled for your tenant then an error will occur.
-        # If unspecified then SIMPLE_HASH is used.
-        props = {
-            "proof_mechanism": ProofMechanism.SIMPLE_HASH.name,
-        }
-
-        # The first argument are the properties of the asset
-        # The second argument are the attributes of the asset
-        # The third argument is wait for confirmation:
+        # The first argument are the attributes of the asset
+        # The second argument is wait for confirmation:
         #   If @confirm@ is True then this function will not
-        #   return until the asset is confirmed on the blockchain and ready
+        #   return until the asset is confirmed and ready
         #   to accept events (or an error occurs)
         #
-        return arch.assets.create(props=props, attrs=attrs, confirm=True)
+        return arch.assets.create(attrs=attrs, confirm=True)
         # alternatively if some work can be done whilst the asset is confirmed then this call can be
         # replaced by a two-step alternative:
 
@@ -131,9 +122,8 @@ You can then use the examples code to create assets (see examples directory):
             client_secret = tokenfile.read().strip()
 
         # Initialize connection to Archivist. max_time is the time to wait for confirmation
-        # of an asset or event creation - the default is 1200 seconds but one can optionally
-        # specify a different value here particularly when creating assets on SIMPLE_HASH
-        # as confirmation times are much shorter in this case.
+        # of an asset or event creation - the default is 300 seconds but one can optionally
+        # specify a different value.
         with arch = Archivist(
             "https://app.datatrails.ai",
             (client_id, client_secret),

archivist/assets.py

@@ -127,7 +127,7 @@ def create(
         Creates asset with defined properties and attributes.
 
         Args:
-            props (dict): Properties - usually only the proof_mechanism setting
+            props (dict): Properties
             attrs (dict): attributes of created asset.
             confirm (bool): if True wait for asset to be confirmed.
 

archivist/confirmer.py

@@ -101,7 +101,6 @@ def _wait_for_confirmation(self: Managers, identity: str) -> ReturnTypes:
             f"confirmation for {identity} FAILED - this is unusable"
         )
 
-    # Simple hash and merkleLog
     if status in (
         ConfirmationStatus.CONFIRMED.name,
         ConfirmationStatus.COMMITTED.name,

archivist/notebooks/Check Asset Compliance using CURRENT OUTSTANDING Policy.ipynb

@@ -40,7 +40,6 @@
     "from archivist.archivist import Archivist\n",
     "from archivist.compliance_policy_requests import CompliancePolicyCurrentOutstanding\n",
     "from archivist.constants import ASSET_BEHAVIOURS\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger\n",
     "\n",
     "filterwarnings(\"ignore\", message=\"Unverified HTTPS request\")"
@@ -164,7 +163,6 @@
     "                },\n",
     "            ],\n",
     "            \"behaviours\": ASSET_BEHAVIOURS,\n",
-    "            \"proof_mechanism\": ProofMechanism.SIMPLE_HASH.name,\n",
     "            \"attributes\": {\n",
     "                \"arc_display_name\": \"Gringott's Vault 2\",\n",
     "                \"arc_description\": \"Main door to the second level security vault in Gringott's Wizarding Bank\",\n",
@@ -355,7 +353,6 @@
       "    \"owner\": \"0xe889E67FdBa658C6f27ccBDa98D9d1B5500Dbbce\",\n",
       "    \"at_time\": \"2023-01-16T11:51:30Z\",\n",
       "    \"storage_integrity\": \"TENANT_STORAGE\",\n",
-      "    \"proof_mechanism\": \"SIMPLE_HASH\",\n",
       "    \"chain_id\": \"827586838445807967\",\n",
       "    \"public\": false,\n",
       "    \"tenant_identity\": \"tenant/9bfb80ee-81f6-40dc-b5c7-1c7fb2fb9866\"\n",
@@ -377,7 +374,6 @@
       "    \"owner\": \"0xe889E67FdBa658C6f27ccBDa98D9d1B5500Dbbce\",\n",
       "    \"at_time\": \"2023-01-16T11:51:30Z\",\n",
       "    \"storage_integrity\": \"TENANT_STORAGE\",\n",
-      "    \"proof_mechanism\": \"SIMPLE_HASH\",\n",
       "    \"chain_id\": \"827586838445807967\",\n",
       "    \"public\": false,\n",
       "    \"tenant_identity\": \"tenant/9bfb80ee-81f6-40dc-b5c7-1c7fb2fb9866\"\n",

archivist/notebooks/Check Asset Compliance using SINCE Policy.ipynb

@@ -300,7 +300,6 @@
       "    \"owner\": \"0xe889E67FdBa658C6f27ccBDa98D9d1B5500Dbbce\",\n",
       "    \"at_time\": \"2023-01-16T11:52:27Z\",\n",
       "    \"storage_integrity\": \"TENANT_STORAGE\",\n",
-      "    \"proof_mechanism\": \"SIMPLE_HASH\",\n",
       "    \"chain_id\": \"827586838445807967\",\n",
       "    \"public\": false,\n",
       "    \"tenant_identity\": \"tenant/9bfb80ee-81f6-40dc-b5c7-1c7fb2fb9866\"\n",
@@ -322,7 +321,6 @@
       "    \"owner\": \"0xe889E67FdBa658C6f27ccBDa98D9d1B5500Dbbce\",\n",
       "    \"at_time\": \"2023-01-16T11:52:27Z\",\n",
       "    \"storage_integrity\": \"TENANT_STORAGE\",\n",
-      "    \"proof_mechanism\": \"SIMPLE_HASH\",\n",
       "    \"chain_id\": \"827586838445807967\",\n",
       "    \"public\": false,\n",
       "    \"tenant_identity\": \"tenant/9bfb80ee-81f6-40dc-b5c7-1c7fb2fb9866\"\n",

archivist/notebooks/Checking the Dog's Weight.ipynb

@@ -48,7 +48,6 @@
     "from archivist.compliance_policy_requests import (\n",
     "    CompliancePolicyRichness,\n",
     ")\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger"
    ]
   },

archivist/notebooks/Create Artist and Album Release Info.ipynb

@@ -44,7 +44,6 @@
     "from dotenv import load_dotenv\n",
     "\n",
     "from archivist.archivist import Archivist\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger"
    ]
   },
@@ -207,7 +206,6 @@
       "    \"owner\": \"0x5284e740A744F075E402f7fB0c4485532ddf4Af8\",\n",
       "    \"at_time\": \"2023-06-02T20:57:01Z\",\n",
       "    \"storage_integrity\": \"TENANT_STORAGE\",\n",
-      "    \"proof_mechanism\": \"SIMPLE_HASH\",\n",
       "    \"chain_id\": \"8275868384\",\n",
       "    \"public\": false,\n",
       "    \"tenant_identity\": \"tenant/0a62f7c9-fd7b-4791-8041-01218d839ec1\"\n",

archivist/notebooks/Create Event with Verified Domain.ipynb

@@ -232,11 +232,8 @@
     "    # The first argument is the attributes of the asset\n",
     "    # The second argument is wait for confirmation:\n",
     "    #   If @confirm@ is True then this function will not\n",
-    "    #   return until the asset is confirmed on the blockchain and ready\n",
+    "    #   return until the asset is confirmed and ready\n",
     "    #   to accept events (or an error occurs)\n",
-    "    #   After an asset is submitted to the blockchain (submitted),\n",
-    "    #   it will be in the \"Pending\" status.\n",
-    "    #   Once it is added to the blockchain, the status will be changed to \"Confirmed\"\n",
     "    return arch.assets.create(attrs=attrs, confirm=True)"
    ]
   },
@@ -276,7 +273,6 @@
       "    \"confirmation_status\": \"CONFIRMED\",\n",
       "    \"identity\": \"assets/0047715f-368e-4a62-aa04-48e6fa974e85\",\n",
       "    \"owner\": \"0xe889E67FdBa658C6f27ccBDa98D9d1B5500Dbbce\",\n",
-      "    \"proof_mechanism\": \"SIMPLE_HASH\",\n",
       "    \"public\": false,\n",
       "    \"storage_integrity\": \"TENANT_STORAGE\",\n",
       "    \"tenant_identity\": \"tenant/9bfb80ee-81f6-40dc-b5c7-1c7fb2fb9866\",\n",

archivist/notebooks/Feeding the Dog Hourly.ipynb

@@ -48,7 +48,6 @@
     "from archivist.compliance_policy_requests import (\n",
     "    CompliancePolicyPeriodOutstanding,\n",
     ")\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger"
    ]
   },

archivist/notebooks/Feeding the Dog in a Timely Manner.ipynb

@@ -48,7 +48,6 @@
     "from archivist.compliance_policy_requests import (\n",
     "    CompliancePolicyDynamicTolerance,\n",
     ")\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger"
    ]
   },

archivist/notebooks/Feeding the Dog.ipynb

@@ -48,7 +48,6 @@
     "from archivist.compliance_policy_requests import (\n",
     "    CompliancePolicyCurrentOutstanding,\n",
     ")\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger"
    ]
   },

archivist/notebooks/Find Artist and Additional Album Release Info.ipynb

@@ -41,7 +41,6 @@
     "from dotenv import load_dotenv\n",
     "\n",
     "from archivist.archivist import Archivist\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger"
    ]
   },
@@ -208,7 +207,6 @@
       "    \"owner\": \"0x5284e740A744F075E402f7fB0c4485532ddf4Af8\",\n",
       "    \"at_time\": \"2023-06-02T21:33:34Z\",\n",
       "    \"storage_integrity\": \"TENANT_STORAGE\",\n",
-      "    \"proof_mechanism\": \"SIMPLE_HASH\",\n",
       "    \"chain_id\": \"8275868384\",\n",
       "    \"public\": false,\n",
       "    \"tenant_identity\": \"tenant/0a62f7c9-fd7b-4791-8041-01218d839ec1\"\n",

archivist/notebooks/Find Artist and Create Cover Art.ipynb

@@ -41,7 +41,6 @@
     "from dotenv import load_dotenv\n",
     "\n",
     "from archivist.archivist import Archivist\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger"
    ]
   },
@@ -235,7 +234,6 @@
       "    \"owner\": \"0x5284e740A744F075E402f7fB0c4485532ddf4Af8\",\n",
       "    \"at_time\": \"2023-06-02T21:01:56Z\",\n",
       "    \"storage_integrity\": \"TENANT_STORAGE\",\n",
-      "    \"proof_mechanism\": \"SIMPLE_HASH\",\n",
       "    \"chain_id\": \"8275868384\",\n",
       "    \"public\": false,\n",
       "    \"tenant_identity\": \"tenant/0a62f7c9-fd7b-4791-8041-01218d839ec1\"\n",

archivist/notebooks/Playing Fetch Every 5 Minutes.ipynb

@@ -48,7 +48,6 @@
     "from archivist.compliance_policy_requests import (\n",
     "    CompliancePolicySince,\n",
     ")\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger"
    ]
   },

archivist/notebooks/Sharing Album Release Info with Record Labels.ipynb

@@ -50,7 +50,6 @@
     "from dotenv import load_dotenv\n",
     "\n",
     "from archivist.archivist import Archivist\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger\n",
     "from archivist.constants import ASSET_BEHAVIOURS"
    ]

archivist/notebooks/Sharing Album Release Info with User.ipynb

@@ -44,7 +44,6 @@
     "from dotenv import load_dotenv\n",
     "\n",
     "from archivist.archivist import Archivist\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger\n",
     "from archivist.constants import ASSET_BEHAVIOURS"
    ]

archivist/notebooks/Sharing Artist Asset with Record Labels.ipynb

@@ -51,7 +51,6 @@
     "from dotenv import load_dotenv\n",
     "\n",
     "from archivist.archivist import Archivist\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger\n",
     "from archivist.constants import ASSET_BEHAVIOURS"
    ]

archivist/notebooks/Sharing Artist Asset with User.ipynb

@@ -44,7 +44,6 @@
     "from dotenv import load_dotenv\n",
     "\n",
     "from archivist.archivist import Archivist\n",
-    "from archivist.proof_mechanism import ProofMechanism\n",
     "from archivist.logger import set_logger\n",
     "from archivist.constants import ASSET_BEHAVIOURS"
    ]

archivist/parser.py

@@ -14,7 +14,6 @@
 from .archivist import Archivist
 from .dictmerge import _deepmerge
 from .logger import set_logger
-from .proof_mechanism import ProofMechanism
 from .utils import get_auth
 
 filterwarnings("ignore", message="Unverified HTTPS request")
@@ -81,15 +80,6 @@ def common_parser(description: str):
         default="https://app.datatrails.ai",
         help="url of Archivist service",
     )
-    parser.add_argument(
-        "-p",
-        "--proof-mechanism",
-        type=ProofMechanism,
-        action=EnumAction,
-        dest="proof_mechanism",
-        default=None,
-        help="mechanism for proving the evidence for events on the Asset",
-    )
     parser.add_argument(
         "--auth-token",
         type=str,
@@ -152,13 +142,6 @@ def endpoint(args):
     arch = None
     LOGGER.info("Initializing connection to DATATRAILS...")
     fixtures = {}
-    if args.proof_mechanism is not None:
-        fixtures = {
-            "assets": {
-                "proof_mechanism": args.proof_mechanism.name,
-            },
-        }
-
     if args.namespace is not None:
         fixtures = _deepmerge(
             fixtures,

archivist/proof_mechanism.py

@@ -3,6 +3,8 @@
    Enumerated type that allows user to select the proof_mechanism option when
    creating an asset.
 
+   Currently there is only one proof mechanism so this code is here only for
+   compatibility.
 """
 
 # pylint: disable=unused-private-member
@@ -14,8 +16,7 @@ class ProofMechanism(Enum):
     """Enumerate proof mechanism options"""
 
     # previously used but now removed
-    __RESERVED = 1
-    #: Assets and events are proven using a hash of the originator's evidence
-    SIMPLE_HASH = 2
+    __RESERVED1 = 1
+    __RESERVED2 = 2
     #: Assets and events are proven using a merkle log hash of the originator's evidence
     MERKLE_LOG = 3

docs/code/index.rst

@@ -22,4 +22,3 @@ Shows all code
 
    timestamp
    errors
-   proof_mechanism

docs/fixtures.rst

@@ -12,7 +12,6 @@ and locations.
 
     from archivist.archivist import Archivist
     from archivist.errors import ArchivistError
-    from archivist.proof_mechanism import ProofMechanism
 
     # Oauth2 token that grants access
     with open(".auth_token", mode='r', encoding="utf-8") as tokenfile:
@@ -22,11 +21,6 @@ and locations.
     ledger = Archivist(
         "https://app.datatrails.ai",
         authtoken,
-        fixtures = {
-            "assets": {
-                "proof_mechanism": ProofMechanism.SIMPLE_HASH.name,
-            }
-        },
     )
 
     # lets define doors in our namespace that reside on the ledger...

examples/applications_registration.py

@@ -13,7 +13,6 @@
 from warnings import filterwarnings
 
 from archivist.archivist import Archivist
-from archivist.proof_mechanism import ProofMechanism
 
 filterwarnings("ignore", message="Unverified HTTPS request")
 
@@ -101,9 +100,6 @@ def main():
         ) as arch1:
             # create an asset
             asset = arch1.assets.create(
-                props={
-                    "proof_mechanism": ProofMechanism.SIMPLE_HASH.name,
-                },
                 attrs={
                     "arc_display_name": "display_name",
                     "arc_description": "display_description",