Assets API

Assets API Reference

Note: This page is primarily intended for developers who will be writing applications that will use DataTrails for provenance. If you are looking for a simple way to test our API you might prefer our Postman collection, the YAML runner or the Developers section of the web UI.
Additional YAML examples can be found in the articles in the Overview section.

Note: For more information on Assets and Asset creation, visit our Core Concepts and Creating an Asset guide.

Asset API Examples

Create the bearer_token and store in a file in a secure local directory with 0600 permissions.

Asset Record Creation

Define the asset parameters and store in /path/to/jsonfile:

{
  "attributes": {
    "picture_from_yesterday": {
      "arc_attribute_type": "arc_attachment",
      "arc_blob_hash_value": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "arc_blob_identity": "blobs/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
      "arc_blob_hash_alg": "SHA256",
      "arc_file_name": "somepic.jpeg",
      "arc_display_name": "Picture from yesterday",
    },
  },
  "behaviours": [
    "RecordEvidence"
  ],
  "public": false
}

Note: The values for arc_blob_hash_value and arc_blob_identity are taken from the response of the Upload call of the Blob API.

Create the Asset:

curl -v -X POST \
    -H "@$HOME/.datatrails/bearer-token.txt" \
    -H "Content-type: application/json" \
    -d "@/path/to/jsonfile" \
    https://app.datatrails.ai/archivist/v2/assets

The response is:

{
  "at_time": "2019-11-27T14:44:19Z",
  "attributes": {
    "picture_from_yesterday": {
      "arc_attribute_type": "arc_attachment",
      "arc_blob_hash_value": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "arc_blob_identity": "blobs/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
      "arc_blob_hash_alg": "SHA256",
      "arc_file_name": "somepic.jpeg",
      "arc_display_name": "Picture from yesterday",
    },
  },
  "behaviours": [
    "RecordEvidence"
  ],
  "confirmation_status": "PENDING",
  "identity": "assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "owner": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxX",
  "public": false,
  "tenant_identity": "tenant/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "tracked": "TRACKED"
}

Creating a Public Asset

Warning: Assets can only be made public at Asset creation and cannot be made private afterwards.

In most cases it is appropriate to create a standard Asset. These Assets can only be shared externally using Access Policies as described in Sharing Assets with OBAC or the IAM Policies API Reference.

However, it is also possible to create a Public Asset which can be shared with a read-only public url; similar to the link sharing you may have seen in file sharing services like Google Drive or DropBox.

Public Assets can be used for Public Attestation, where you may wish to publicly assert data you have published.

For example, the vulnerability reports against an OpenSource software package, or perhaps the maintenance records for a public building.

Creating a Public Asset just requires flipping the public value in the above request to true. From then on, only the creating Tenancy may update the Asset and Events on a Public Asset through their private, signed-in interface.

All Public Assets are then given a read-only public URL that can be retrieved using Fetch a Public Asset’s URL, any Events added to that Public Asset will also get their own unique Public URL that can be retrieved with Fetch a Public Asset’s Event URL.

This link can be shared with anyone to give them read-only access to the Asset or Event without the need to sign in.

To interact with the unauthenticated Public Interface for a Public Asset see the Public Assets API Reference. To update the Assets and Events as the creating Tenant on a Public Asset’s authenticated Private Interface, you would still use the standard Assets and Events API as normal.

Creating a Document Profile Asset

This class of Asset conforms to the Document Profile Developer Pattern, which allows you to trace the lifecyle of a document.

Define the asset parameters and store in /path/to/jsonfile:

{
    "attributes": {
        "arc_description":"Test Document",
        "arc_display_type":"Marketing glossy",
        "arc_display_name":"Test Document Profile Asset",
        "arc_profile":"Document",
        "document_hash_value":"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
        "document_hash_alg":"sha256",
        "document_version":"1",
        "document_status":"Published",
        "some_custom_attribute":"anything you like"
    },
    "chain_id":"",
    "behaviours": [
        "Builtin",
        "RecordEvidence"
    ]
}

Note: Document Profile Assets must be set to public to be compatible with Instaproof verification.

Create the Asset:

curl -v -X POST \
    -H "@datatrails-bearer.txt" \
    -H "Content-type: application/json" \
    -d "@/path/to/jsonfile" \
    https://app.datatrails.ai/archivist/v2/assets

The response is:

{
    "identity": "assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
    "behaviours": [
        "Builtin",
        "RecordEvidence"
    ],
    "attributes": {
        "arc_profile": "Document",
        "document_version": "1",
        "some_custom_attribute": "anything you like",
        "document_status": "Published",
        "arc_description": "Test Document",
        "arc_display_type": "Marketing glossy",
        "document_hash_value": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
        "arc_display_name": "Test Document Profile Asset",
        "document_hash_alg": "sha256"
    },
    "confirmation_status": "PENDING",
    "tracked": "TRACKED",
    "owner": "",
    "at_time": "2023-09-27T11:32:22Z",
    "storage_integrity": "TENANT_STORAGE",
    "chain_id": "8275868384",
    "public": false,
    "tenant_identity": ""
}

Asset Record Retrieval

Asset records in DataTrails are tokenized at creation time and referred to in all API calls and smart contracts throughout the system by a unique identity of the form:

assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

If you do not know the Asset’s identity you can fetch Asset records using other information you do know.

Fetch All Assets

To fetch all Asset records, simply GET the Assets resource:

curl -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     https://app.datatrails.ai/archivist/v2/assets

Fetch Specific Asset by Identity

If you know the unique identity of the Asset record simply GET the resource:

curl -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     https://app.datatrails.ai/archivist/v2/assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

Fetch Specific Asset at Given Point in Time by Identity

If you know the unique identity of an Asset record and want to show its state at any given point in the past, simply GET with the following query parameter:

curl -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     "https://app.datatrails.ai/archivist/v2/assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx?at_time=2021-01-13T12:34:21Z"

This will return the Asset record with the values it had on 2021-01-13T12:34:21Z.

Fetch Assets by Name

To fetch all Assets with a specific name, GET the Assets resource and filter on arc_display_name:

curl -g -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     "https://app.datatrails.ai/archivist/v2/assets?attributes.arc_display_name=tcl.ccj.003"

Fetch Assets by Type

To fetch all Assets of a specific type, GET the Assets resource and filter on arc_display_type:

curl -g -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     "https://app.datatrails.ai/archivist/v2/assets?attributes.arc_display_type=Traffic%20light"

Fetch Assets by Proof Mechanism

To fetch all Assets that use a specific Proof Mechanism, GET the Assets resource and filter on proof_mechanism:

curl -g -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     "https://app.datatrails.ai/archivist/v2/assets?proof_mechanism=MERKLE_LOG"

Fetch Events Ordered for SIMPLEHASHV1 Schema

To fetch Simple Hash Events in the order needed for the SIMPLEHASHV1 schema, GET the Assets resource, specifying a specific Asset ID or using assets/-/events to fetch Events for all Assets:

curl -g -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     "https://app.datatrails.ai/archivist/v2/assets/-/events?order_by=SIMPLEHASHV1"

Fetch Assets by Filtering for Presence of a Field

To fetch all Assets with a field set to any value, GET the Assets resource and filter on most available fields. For example:

curl -g -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     "https://app.datatrails.ai/archivist/v2/assets?attributes.arc_display_name=*"

Returns all Assets which have arc_display_name that is not empty.

Fetch Assets Which are Missing a Field

To fetch all Assets with a field which is not set to any value, GET the Assets resource and filter on most available fields. For example:

curl -g -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     "https://app.datatrails.ai/archivist/v2/assets?attributes.arc_display_name!=*"

Returns all Assets which do not have arc_display_name or in which arc_display_name is empty.

Fetch a Public Asset’s URL

Fetch the Public URL of a Public Asset:

curl -g -v -X GET \
     -H "@$HOME/.datatrails/bearer-token.txt" \
     https://app.datatrails.ai/archivist/v2/assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx:publicurl

{
  "publicurl":"https://app.datatrails.ai/archivist/publicassets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Fetch a Public Asset’s Event URL

Fetch the Public URL of an Event on a Public Asset:

     -H "@$HOME/.datatrails/bearer-token.txt" \
     https://app.datatrails.ai/archivist/v2/assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/events/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx:publicurl

{
  "publicurl":"https://app.datatrails.ai/archivist/publicassets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/events/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}

Tracking and Untracking Assets

While deleting Assets is not possible, it is possible to hide them from default searches so that old or obsolete records don’t crowd out the tenant estate or show up in partner tenancies when they shouldn’t.

Untracking an Asset

Untracking is actually an Event in the Asset lifecycle, so it is necessary to know the Asset identity and POST to it directly. Here we assume we are working with an Asset with identity assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.

Define the Event parameters and store in /path/to/jsonfile:

{
  "operation": "StopTracking",
  "behaviour": "Builtin"
}

Untrack the Asset:

curl -v -X POST \
    -H "@$HOME/.datatrails/bearer-token.txt" \
    -H "Content-type: application/json" \
    -d "@/path/to/jsonfile" \
    https://app.datatrails.ai/archivist/v2/assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/events

The response is:

{
  "identity": "assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/events/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "asset_identity": "assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "event_attributes": {},
  "asset_attributes": {},
  "operation": "StopTracking",
  "behaviour": "Builtin",
  "timestamp_declared": "2023-02-23T19:55:44Z",
  "timestamp_accepted": "2023-02-23T19:55:44Z",
  "timestamp_committed": "1970-01-01T00:00:00Z",
  "principal_declared": {
    "issuer": "idp.synsation.io/1234",
    "subject": "phil.b",
    "email": "phil.b@synsation.io"
  },
  "principal_accepted": {
    "issuer": "job.idp.server/1234",
    "subject": "bob@job"
  },
  "confirmation_status": "PENDING",
  "transaction_id": "",
  "block_number": 0,
  "transaction_index": 0,
  "from": "",
  "tenant_identity": ""
}

(Re-)Tracking an Asset

It is possible to reverse an untracking Event by tracking the Asset again, assuming you know the Asset identity. Here we assume we are working with an Asset with identity assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.

Define the Event parameters and store in /path/to/jsonfile:

{
  "operation": "StartTracking",
  "behaviour": "Builtin"
}

Track the Asset:

curl -v -X POST \
    -H "@$HOME/.datatrails/bearer-token.txt" \
    -H "Content-type: application/json" \
    -d "@/path/to/jsonfile" \
    https://app.datatrails.ai/archivist/v2/assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/events

The response is:

{
  "identity": "assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/events/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "asset_identity": "assets/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "event_attributes": {},
  "asset_attributes": {},
  "operation": "StartTracking",
  "behaviour": "Builtin",
  "timestamp_declared": "2023-02-23T19:55:44Z",
  "timestamp_accepted": "2023-02-23T19:55:44Z",
  "timestamp_committed": "1970-01-01T00:00:00Z",
  "principal_declared": {
    "issuer": "idp.synsation.io/1234",
    "subject": "phil.b",
    "email": "phil.b@synsation.io"
  },
  "principal_accepted": {
    "issuer": "job.idp.server/1234",
    "subject": "bob@job"
  },
  "confirmation_status": "PENDING",
  "transaction_id": "",
  "block_number": 0,
  "transaction_index": 0,
  "from": "",
  "tenant_identity": ""
}

Asset OpenAPI Docs

API for asset and event management.

get /archivist/v2/assets/archivist/v2/assets

List Assets

Description: Retrieves a list of Assets

{
  "assets": [
    {
      "at_time": "2019-11-27T14:44:19Z",
      "attributes": {
        "arc_display_name": "My Garden Fence",
        "arc_display_type": "Garden Fence",
        "colour": "Plain wood"
      },
      "behaviours": [
        "RecordEvidence"
      ],
      "confirmation_status": "PENDING",
      "identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f",
      "owner": "0x601f5A7D3e6dcB55e87bf2F17bC8A27AaCD3511",
      "proof_mechanism": "SIMPLE_HASH",
      "public": false,
      "tenant_identity": "tenant/8e0b600c-8234-43e4-860c-e95bdcd695a9",
      "tracked": "TRACKED"
    },
    {
      "at_time": "2019-11-27T14:44:19Z",
      "attributes": {
        "arc_display_name": "My IoT Device",
        "arc_display_type": "IoT Device",
        "arc_firmware_version": "3.2.1"
      },
      "behaviours": [
        "RecordEvidence"
      ],
      "confirmation_status": "PENDING",
      "identity": "assets/cef61346-2453-5aeb-921c-e6fa93d5b032",
      "owner": "0x601f5A7D3e6dcB55e87bf2F17bC8A27AaCD3511",
      "proof_mechanism": "SIMPLE_HASH",
      "public": false,
      "tenant_identity": "tenant/8e0b600c-8234-43e4-860c-e95bdcd695a9",
      "tracked": "TRACKED"
    }
  ],
  "next_page_token": "abcd"
}

Response Parameter	Type	Description
assets	array	This describes an Asset.
next_page_token	string	Token to retrieve the next page of results or empty if there are none.

Responses	Description
200	A successful response.
206	The number of Assets exceeds the servers limit. The approximate number of matching results is provided by the x-total-count header if the ‘x-request-total-count’ header on the request is set to ’true’. The exact limit is available in the content-range header. The value format is ‘items 0-LIMIT/TOTAL’. Note that x-total-count is always present for 200 and 206 responses. It is the servers best available approximation. Similarly, in any result set, you may get a few more than LIMIT items.
401	Returned when the user is not authenticated to the system.
402	Returned when the user’s quota of Assets for the given proof mechanism has been reached.
403	Returned when the user is not authorized to list Assets.
429	Returned when a user exceeds their subscription’s rate limit for requests.

post /archivist/v2/assets/archivist/v2/assets

Create an Asset

Description: Creates an Asset

{
  "attributes": {
    "arc_display_name": "My Garden Fence",
    "arc_display_type": "Garden Fence",
    "colour": "Plain wood"
  },
  "behaviours": [
    "RecordEvidence"
  ],
  "proof_mechanism": "SIMPLE_HASH",
  "public": false
}

Parameter	Type	Description
attributes	object	key value mapping of event attributes
behaviours	array	list of behaviours enabled for this asset
chain_id	string	chain id of the blockchain associated with this asset
proof_mechanism	string	specify the mechanism used to provide evidential proof for Events on this Asset
public	boolean	Public asset. A public asset and all its events are visible to the general public.Sharing to specific organisations is not available for public assets.

{
  "at_time": "2019-11-27T14:44:19Z",
  "attributes": {
    "arc_display_name": "My Garden Fence",
    "arc_display_type": "Garden Fence",
    "colour": "Plain wood"
  },
  "behaviours": [
    "RecordEvidence"
  ],
  "confirmation_status": "PENDING",
  "identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f",
  "owner": "0x601f5A7D3e6dcB55e87bf2F17bC8A27AaCD3511",
  "proof_mechanism": "SIMPLE_HASH",
  "public": false,
  "tenant_identity": "tenant/8e0b600c-8234-43e4-860c-e95bdcd695a9",
  "tracked": "TRACKED"
}

Response Parameter	Type	Description
at_time	string	indicates time the asset data is from
attributes	object	key value mapping of asset properties
behaviours	array	list of behaviours enabled for this asset
chain_id	string	chain id of the blockchain associated with this asset
confirmation_status	string	indicates if the asset has been succesfully committed to the blockchain
identity	string	relative resource address `assets/{UUID}`
owner	string	wallet address of the asset owner
proof_mechanism	string	the mechanism used to provide evidential proof
public	boolean	Public asset
tenant_identity	string	Identity of the tenant the that created this asset
tracked	string	indicates whether asset is still being tracked in the system

Responses	Description
200	A successful response.
401	Returned when the user is not authenticated to the system.
402	Returned when the user either has not enabled blockchain storage orthe number of assets would exceed the user’s quota
403	Returned when the user is not authorized to create an Asset.
429	Returned when a user exceeds their subscription’s rate limit for requests.

get /archivist/v2/assets/archivist/v2/assets/{asset_uuid}/events/{uuid}

Retrieves an Event

Description: Retrieves a specific Event

{
  "asset_attributes": {
    "colour": "Midnight Blue"
  },
  "asset_identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f",
  "behaviour": "RecordEvidence",
  "block_number": 12,
  "confirmation_status": "CONFIRMED",
  "event_attributes": {
    "arc_description": "Painted the fence",
    "arc_display_type": "Paint"
  },
  "identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f/events/11bf5b37-e0b8-42e0-8dcf-dc8c4aefc000",
  "operation": "Record",
  "principal_accepted": {
    "issuer": "job.idp.server/1234",
    "subject": "bob@job"
  },
  "principal_declared": {
    "issuer": "job.idp.server/1234",
    "subject": "bob@job"
  },
  "tenant_identity": "tenant/8e0b600c-8234-43e4-860c-e95bdcd695a9",
  "timestamp_accepted": "2019-11-27T14:44:19Z",
  "timestamp_committed": "2019-11-27T14:44:19Z",
  "timestamp_declared": "2019-11-27T14:44:19Z",
  "transaction_id": "0x07569",
  "transaction_index": 5
}

Response Parameter	Type	Description
asset_attributes	object	key value mapping of asset attributes
asset_identity	string	identity of a related asset resource `assets/11bf5b37-e0b8-42e0-8dcf-dc8c4aefc000`
behaviour	string	The behaviour used to create event. `RecordEvidence`
block_number	string	number of block event was commited on
confirmation_status	string	indicates if the event has been succesfully committed to the blockchain
event_attributes	object	key value mapping of event attributes
from	string	wallet address for the creator of this event
identity	string	identity of a event resource
merklelog_entry	object	verifiable merkle mmr log entry details
operation	string	The operation represented by the event. `Record`
principal_accepted	object	principal recorded by the server
principal_declared	object	principal provided by the user
tenant_identity	string	Identity of the tenant the that created this event
timestamp_accepted	string	time of event as recorded by the server
timestamp_committed	string	time of event as recorded in verifiable storage
timestamp_declared	string	time of event as declared by the user
transaction_id	string	hash of the transaction as a hex string `0x11bf5b37e0b842e08dcfdc8c4aefc000`
transaction_index	string	index of event within commited block

Responses	Description
200	A successful response.
401	Returned when the user is not authenticated to the system.
403	Returned when the user is not authorized to view Event.
404	Returned when the event does not exist.
429	Returned when a user exceeds their subscription’s rate limit for requests.

get /archivist/v2/assets/archivist/v2/assets/{asset_uuid}/events/{uuid}:publicurl

Retrieves the Event public url

Description: Retrieves the public url for a specific Event.

{
  "publicurl": "https://app.datatrails.ai/archivist/publicassets/add30235-1424-4fda-840a-d5ef82c4c96f/events/11bf5b37-e0b8-42e0-8dcf-dc8c4aefc000"
}

Response Parameter	Type	Description
publicurl	string

Responses	Description
200	A successful response.
401	Returned when the user is not authenticated to the system.
403	Returned when the user is not authorized to view an Asset.
404	Returned when the asset with the id does not exist.
429	Returned when a user exceeds their subscription’s rate limit for requests.

get /archivist/v2/assets/archivist/v2/assets/{uuid}

Retrieves an Asset

Description: Retrieves a specific Asset

{
  "at_time": "2019-11-27T14:44:19Z",
  "attributes": {
    "arc_display_name": "My Garden Fence",
    "arc_display_type": "Garden Fence",
    "colour": "Plain wood"
  },
  "behaviours": [
    "RecordEvidence"
  ],
  "confirmation_status": "PENDING",
  "identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f",
  "owner": "0x601f5A7D3e6dcB55e87bf2F17bC8A27AaCD3511",
  "proof_mechanism": "SIMPLE_HASH",
  "public": false,
  "tenant_identity": "tenant/8e0b600c-8234-43e4-860c-e95bdcd695a9",
  "tracked": "TRACKED"
}

Response Parameter	Type	Description
at_time	string	indicates time the asset data is from
attributes	object	key value mapping of asset properties
behaviours	array	list of behaviours enabled for this asset
chain_id	string	chain id of the blockchain associated with this asset
confirmation_status	string	indicates if the asset has been succesfully committed to the blockchain
identity	string	relative resource address `assets/{UUID}`
owner	string	wallet address of the asset owner
proof_mechanism	string	the mechanism used to provide evidential proof
public	boolean	Public asset
tenant_identity	string	Identity of the tenant the that created this asset
tracked	string	indicates whether asset is still being tracked in the system

Responses	Description
200	A successful response.
401	Returned when the user is not authenticated to the system.
403	Returned when the user is not authorized to view an Asset.
404	Returned when the asset with the id does not exist.
429	Returned when a user exceeds their subscription’s rate limit for requests.

get /archivist/v2/assets/archivist/v2/assets/{uuid}/events

List Events

Description: Lists Events

{
  "events": [
    {
      "asset_attributes": {
        "colour": "Midnight Blue"
      },
      "asset_identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f",
      "behaviour": "RecordEvidence",
      "block_number": 12,
      "confirmation_status": "CONFIRMED",
      "event_attributes": {
        "arc_description": "Painted the fence",
        "arc_display_type": "Paint"
      },
      "identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f/events/11bf5b37-e0b8-42e0-8dcf-dc8c4aefc000",
      "operation": "Record",
      "principal_accepted": {
        "issuer": "job.idp.server/1234",
        "subject": "bob@job"
      },
      "principal_declared": {
        "issuer": "job.idp.server/1234",
        "subject": "bob@job"
      },
      "tenant_identity": "tenant/8e0b600c-8234-43e4-860c-e95bdcd695a9",
      "timestamp_accepted": "2019-11-27T14:44:19Z",
      "timestamp_committed": "2019-11-27T14:44:19Z",
      "timestamp_declared": "2019-11-27T14:44:19Z",
      "transaction_id": "0x07569",
      "transaction_index": 5
    },
    {
      "asset_attributes": {
        "arc_firmware_version": "3.2.1"
      },
      "asset_identity": "assets/bf330235-1424-4fda-840a-d5ef82c4c96f",
      "behaviour": "RecordEvidence",
      "block_number": 13,
      "confirmation_status": "CONFIRMED",
      "event_attributes": {
        "arc_display_type": "Update Firmware"
      },
      "identity": "assets/bf330235-1424-4fda-840a-d5ef82c4c96f/events/23c06c48-e0b8-42e0-8dcf-dc8c4fdad123",
      "operation": "Record",
      "principal_accepted": {
        "issuer": "job.idp.server/1234",
        "subject": "bob@job"
      },
      "principal_declared": {
        "issuer": "job.idp.server/1234",
        "subject": "bob@job"
      },
      "tenant_identity": "tenant/8e0b600c-8234-43e4-860c-e95bdcd695a9",
      "timestamp_accepted": "2019-07-27T14:44:19Z",
      "timestamp_committed": "2019-07-27T14:44:19Z",
      "timestamp_declared": "2019-07-27T14:44:19Z",
      "transaction_id": "0x12569",
      "transaction_index": 6
    }
  ],
  "next_page_token": "abcd"
}

Response Parameter	Type	Description
events	array	This describes an Event.
next_page_token	string	Token to retrieve the next page of results or empty if there are none.

Responses	Description
200	A successful response.
206	The number of Events exceeds the server’s limit. The approximate number of matching results is provided by the x-total-count header, the exact limit is available in the content-range header. The value format is ‘items 0-LIMIT/TOTAL’. Note that x-total-count is always present for 200 and 206 responses. It is the servers best available approximation. Similarly, in any result set, you may get a few more than LIMIT items.
401	Returned when the user is not authenticated to the system.
403	Returned when the user is not authorized to list Events.
429	Returned when a user exceeds their subscription’s rate limit for requests.

post /archivist/v2/assets/archivist/v2/assets/{uuid}/events

Creates an Event

Description: Creates an Event

Parameter	Type	Required	Description
uuid	string	true	Specify the Asset UUID where `assets/{uuid}` is the Asset Identity e.g. `add30235-1424-4fda-840a-d5ef82c4c96f` from Identity `assets/add30235-1424-4fda-840a-d5ef82c4c96f`
body		true

{
  "asset_attributes": {
    "colour": "Midnight Blue"
  },
  "asset_identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f",
  "behaviour": "RecordEvidence",
  "block_number": 12,
  "confirmation_status": "CONFIRMED",
  "event_attributes": {
    "arc_description": "Painted the fence",
    "arc_display_type": "Paint"
  },
  "identity": "assets/add30235-1424-4fda-840a-d5ef82c4c96f/events/11bf5b37-e0b8-42e0-8dcf-dc8c4aefc000",
  "operation": "Record",
  "principal_accepted": {
    "issuer": "job.idp.server/1234",
    "subject": "bob@job"
  },
  "principal_declared": {
    "issuer": "job.idp.server/1234",
    "subject": "bob@job"
  },
  "tenant_identity": "tenant/8e0b600c-8234-43e4-860c-e95bdcd695a9",
  "timestamp_accepted": "2019-11-27T14:44:19Z",
  "timestamp_committed": "2019-11-27T14:44:19Z",
  "timestamp_declared": "2019-11-27T14:44:19Z",
  "transaction_id": "0x07569",
  "transaction_index": 5
}

Response Parameter	Type	Description
asset_attributes	object	key value mapping of asset attributes
asset_identity	string	identity of a related asset resource `assets/11bf5b37-e0b8-42e0-8dcf-dc8c4aefc000`
behaviour	string	The behaviour used to create event. `RecordEvidence`
block_number	string	number of block event was commited on
confirmation_status	string	indicates if the event has been succesfully committed to the blockchain
event_attributes	object	key value mapping of event attributes
from	string	wallet address for the creator of this event
identity	string	identity of a event resource
merklelog_entry	object	verifiable merkle mmr log entry details
operation	string	The operation represented by the event. `Record`
principal_accepted	object	principal recorded by the server
principal_declared	object	principal provided by the user
tenant_identity	string	Identity of the tenant the that created this event
timestamp_accepted	string	time of event as recorded by the server
timestamp_committed	string	time of event as recorded in verifiable storage
timestamp_declared	string	time of event as declared by the user
transaction_id	string	hash of the transaction as a hex string `0x11bf5b37e0b842e08dcfdc8c4aefc000`
transaction_index	string	index of event within commited block

Responses	Description
200	A successful response.
401	Returned when the user is not authenticated to the system.
402	Returned when the user’s quota of Events has been reached.
429	Returned when a user exceeds their subscription’s rate limit for requests.

get /archivist/v2/assets/archivist/v2/assets/{uuid}:publicurl

Retrieves the Asset public url

Description: Retrieves the public url for a specific Asset.

{
  "publicurl": "https://app.datatrails.ai/archivist/publicassets/add30235-1424-4fda-840a-d5ef82c4c96f"
}

Response Parameter	Type	Description
publicurl	string

Responses	Description
200	A successful response.
401	Returned when the user is not authenticated to the system.
403	Returned when the user is not authorized to view an Asset.
404	Returned when the asset with the id does not exist.
429	Returned when a user exceeds their subscription’s rate limit for requests.

Assets API

Asset API Examples#

Asset Record Creation#

Creating a Public Asset#

Creating a Document Profile Asset#

Asset Record Retrieval#

Fetch All Assets#

Fetch Specific Asset by Identity#

Fetch Specific Asset at Given Point in Time by Identity#

Fetch Assets by Name#

Fetch Assets by Type#

Fetch Assets by Proof Mechanism#

Fetch Events Ordered for SIMPLEHASHV1 Schema#

Fetch Assets by Filtering for Presence of a Field#

Fetch Assets Which are Missing a Field#

Fetch a Public Asset’s URL#

Fetch a Public Asset’s Event URL#

Tracking and Untracking Assets#

Untracking an Asset#

(Re-)Tracking an Asset#

Asset OpenAPI Docs#

get /archivist/v2/assets/archivist/v2/assets

get /archivist/v2/assets/archivist/v2/assets

List Assets

Example Response

post /archivist/v2/assets/archivist/v2/assets

post /archivist/v2/assets/archivist/v2/assets

Create an Asset

Example Request

Example Response

get /archivist/v2/assets/archivist/v2/assets/{asset_uuid}/events/{uuid}

get /archivist/v2/assets/archivist/v2/assets/{asset_uuid}/events/{uuid}

Retrieves an Event

Example Response

get /archivist/v2/assets/archivist/v2/assets/{asset_uuid}/events/{uuid}:publicurl

get /archivist/v2/assets/archivist/v2/assets/{asset_uuid}/events/{uuid}:publicurl

Retrieves the Event public url

Example Response

get /archivist/v2/assets/archivist/v2/assets/{uuid}

get /archivist/v2/assets/archivist/v2/assets/{uuid}

Retrieves an Asset

Example Response

get /archivist/v2/assets/archivist/v2/assets/{uuid}/events

get /archivist/v2/assets/archivist/v2/assets/{uuid}/events

List Events

Example Response

post /archivist/v2/assets/archivist/v2/assets/{uuid}/events

post /archivist/v2/assets/archivist/v2/assets/{uuid}/events

Creates an Event

Example Response

get /archivist/v2/assets/archivist/v2/assets/{uuid}:publicurl

get /archivist/v2/assets/archivist/v2/assets/{uuid}:publicurl

Retrieves the Asset public url

Example Response

Asset API Examples

Asset Record Creation

Creating a Public Asset

Creating a Document Profile Asset

Asset Record Retrieval

Fetch All Assets

Fetch Specific Asset by Identity

Fetch Specific Asset at Given Point in Time by Identity

Fetch Assets by Name

Fetch Assets by Type

Fetch Assets by Proof Mechanism

Fetch Events Ordered for SIMPLEHASHV1 Schema

Fetch Assets by Filtering for Presence of a Field

Fetch Assets Which are Missing a Field

Fetch a Public Asset’s URL

Fetch a Public Asset’s Event URL

Tracking and Untracking Assets

Untracking an Asset

(Re-)Tracking an Asset

Asset OpenAPI Docs