Uniques¶

Calls¶

approve_transfer¶

Approve an item to be transferred by a delegated third-party account.

The origin must conform to ForceOrigin or must be Signed and the sender must be either the owner of the item or the admin of the collection.

collection: The collection of the item to be approved for delegated transfer.
item: The item of the item to be approved for delegated transfer.
delegate: The account to delegate permission to transfer the item.

Important NOTE: The approved account gets reset after each transfer.

Emits ApprovedTransfer on success.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`
delegate	`AccountIdLookupOf<T>`

Python¶

call = substrate.compose_call(
    'Uniques', 'approve_transfer', {
    'collection': 'u64',
    'delegate': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'item': 'u128',
}
)

burn¶

Destroy a single item.

Origin must be Signed and the signing account must be either: - the Admin of the collection; - the Owner of the item;

collection: The collection of the item to be burned.
item: The item of the item to be burned.
check_owner: If Some then the operation will fail with WrongOwner unless the item is owned by this value.

Emits Burned with the actual amount burned.

Weight: O(1) Modes: check_owner.is_some().

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`
check_owner	`Option<AccountIdLookupOf<T>>`

Python¶

call = substrate.compose_call(
    'Uniques', 'burn', {
    'check_owner': (
        None,
        {
            'Address20': '[u8; 20]',
            'Address32': '[u8; 32]',
            'Id': 'AccountId',
            'Index': (),
            'Raw': 'Bytes',
        },
    ),
    'collection': 'u64',
    'item': 'u128',
}
)

buy_item¶

Allows to buy an item if it's up for sale.

Origin must be Signed and must not be the owner of the item.

collection: The collection of the item.
item: The item the sender wants to buy.
bid_price: The price the sender is willing to pay.

Emits ItemBought on success.

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`
bid_price	`ItemPrice<T, I>`

Python¶

call = substrate.compose_call(
    'Uniques', 'buy_item', {
    'bid_price': 'u128',
    'collection': 'u64',
    'item': 'u128',
}
)

cancel_approval¶

Cancel the prior approval for the transfer of an item by a delegate.

Origin must be either: - the Force origin; - Signed with the signer being the Admin of the collection; - Signed with the signer being the Owner of the item;

Arguments: - collection: The collection of the item of whose approval will be cancelled. - item: The item of the item of whose approval will be cancelled. - maybe_check_delegate: If Some will ensure that the given account is the one to which permission of transfer is delegated.

Emits ApprovalCancelled on success.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`
maybe_check_delegate	`Option<AccountIdLookupOf<T>>`

Python¶

call = substrate.compose_call(
    'Uniques', 'cancel_approval', {
    'collection': 'u64',
    'item': 'u128',
    'maybe_check_delegate': (
        None,
        {
            'Address20': '[u8; 20]',
            'Address32': '[u8; 32]',
            'Id': 'AccountId',
            'Index': (),
            'Raw': 'Bytes',
        },
    ),
}
)

clear_attribute¶

Clear an attribute for a collection or item.

Origin must be either ForceOrigin or Signed and the sender should be the Owner of the collection.

Any deposit is freed for the collection's owner.

collection: The identifier of the collection whose item's metadata to clear.
maybe_item: The identifier of the item whose metadata to clear.
key: The key of the attribute.

Emits AttributeCleared.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
maybe_item	`Option<T::ItemId>`
key	`BoundedVec<u8, T::KeyLimit>`

Python¶

call = substrate.compose_call(
    'Uniques', 'clear_attribute', {
    'collection': 'u64',
    'key': 'Bytes',
    'maybe_item': (None, 'u128'),
}
)

clear_collection_metadata¶

Clear the metadata for a collection.

Origin must be either ForceOrigin or Signed and the sender should be the Owner of the collection.

Any deposit is freed for the collection's owner.

collection: The identifier of the collection whose metadata to clear.

Emits CollectionMetadataCleared.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`

Python¶

call = substrate.compose_call(
    'Uniques', 'clear_collection_metadata', {'collection': 'u64'}
)

clear_metadata¶

Clear the metadata for an item.

Origin must be either ForceOrigin or Signed and the sender should be the Owner of the item.

Any deposit is freed for the collection's owner.

collection: The identifier of the collection whose item's metadata to clear.
item: The identifier of the item whose metadata to clear.

Emits MetadataCleared.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`

Python¶

call = substrate.compose_call(
    'Uniques', 'clear_metadata', {'collection': 'u64', 'item': 'u128'}
)

create¶

Issue a new collection of non-fungible items from a public origin.

This new collection has no items initially and its owner is the origin.

The origin must conform to the configured CreateOrigin and have sufficient funds free.

ItemDeposit funds of sender are reserved.

Parameters: - collection: The identifier of the new collection. This must not be currently in use. - admin: The admin of this collection. The admin is the initial address of each member of the collection's admin team.

Emits Created event when successful.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
admin	`AccountIdLookupOf<T>`

Python¶

call = substrate.compose_call(
    'Uniques', 'create', {
    'admin': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'collection': 'u64',
}
)

destroy¶

Destroy a collection of fungible items.

The origin must conform to ForceOrigin or must be Signed and the sender must be the owner of the collection.

collection: The identifier of the collection to be destroyed.
witness: Information on the items minted in the collection. This must be correct.

Emits Destroyed event when successful.

Weight: O(n + m) where: - n = witness.items - m = witness.item_metadatas - a = witness.attributes

Attributes¶

Name	Type
collection	`T::CollectionId`
witness	`DestroyWitness`

Python¶

call = substrate.compose_call(
    'Uniques', 'destroy', {
    'collection': 'u64',
    'witness': {
        'attributes': 'u32',
        'item_metadatas': 'u32',
        'items': 'u32',
    },
}
)

force_create¶

Issue a new collection of non-fungible items from a privileged origin.

This new collection has no items initially.

The origin must conform to ForceOrigin.

Unlike create, no funds are reserved.

collection: The identifier of the new item. This must not be currently in use.
owner: The owner of this collection of items. The owner has full superuser permissions over this item, but may later change and configure the permissions using transfer_ownership and set_team.

Emits ForceCreated event when successful.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
owner	`AccountIdLookupOf<T>`
free_holding	`bool`

Python¶

call = substrate.compose_call(
    'Uniques', 'force_create', {
    'collection': 'u64',
    'free_holding': 'bool',
    'owner': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
}
)

force_item_status¶

Alter the attributes of a given item.

Origin must be ForceOrigin.

collection: The identifier of the item.
owner: The new Owner of this item.
issuer: The new Issuer of this item.
admin: The new Admin of this item.
freezer: The new Freezer of this item.
free_holding: Whether a deposit is taken for holding an item of this collection.
is_frozen: Whether this collection is frozen except for permissioned/admin instructions.

Emits ItemStatusChanged with the identity of the item.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
owner	`AccountIdLookupOf<T>`
issuer	`AccountIdLookupOf<T>`
admin	`AccountIdLookupOf<T>`
freezer	`AccountIdLookupOf<T>`
free_holding	`bool`
is_frozen	`bool`

Python¶

call = substrate.compose_call(
    'Uniques', 'force_item_status', {
    'admin': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'collection': 'u64',
    'free_holding': 'bool',
    'freezer': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'is_frozen': 'bool',
    'issuer': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'owner': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
}
)

freeze¶

Disallow further unprivileged transfer of an item.

Origin must be Signed and the sender should be the Freezer of the collection.

collection: The collection of the item to be frozen.
item: The item of the item to be frozen.

Emits Frozen.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`

Python¶

call = substrate.compose_call(
    'Uniques', 'freeze', {'collection': 'u64', 'item': 'u128'}
)

freeze_collection¶

Disallow further unprivileged transfers for a whole collection.

Origin must be Signed and the sender should be the Freezer of the collection.

collection: The collection to be frozen.

Emits CollectionFrozen.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`

Python¶

call = substrate.compose_call(
    'Uniques', 'freeze_collection', {'collection': 'u64'}
)

mint¶

Mint an item of a particular collection.

The origin must be Signed and the sender must be the Issuer of the collection.

collection: The collection of the item to be minted.
item: The item value of the item to be minted.
beneficiary: The initial owner of the minted item.

Emits Issued event when successful.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`
owner	`AccountIdLookupOf<T>`

Python¶

call = substrate.compose_call(
    'Uniques', 'mint', {
    'collection': 'u64',
    'item': 'u128',
    'owner': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
}
)

redeposit¶

Reevaluate the deposits on some items.

Origin must be Signed and the sender should be the Owner of the collection.

collection: The collection to be frozen.
items: The items of the collection whose deposits will be reevaluated.

NOTE: This exists as a best-effort function. Any items which are unknown or in the case that the owner account does not have reservable funds to pay for a deposit increase are ignored. Generally the owner isn't going to call this on items whose existing deposit is less than the refreshed deposit as it would only cost them, so it's of little consequence.

It will still return an error in the case that the collection is unknown of the signer is not permitted to call it.

Weight: O(items.len())

Attributes¶

Name	Type
collection	`T::CollectionId`
items	`Vec<T::ItemId>`

Python¶

call = substrate.compose_call(
    'Uniques', 'redeposit', {
    'collection': 'u64',
    'items': ['u128'],
}
)

set_accept_ownership¶

Set (or reset) the acceptance of ownership for a particular account.

Origin must be Signed and if maybe_collection is Some, then the signer must have a provider reference.

maybe_collection: The identifier of the collection whose ownership the signer is willing to accept, or if None, an indication that the signer is willing to accept no ownership transferal.

Emits OwnershipAcceptanceChanged.

Attributes¶

Name	Type
maybe_collection	`Option<T::CollectionId>`

Python¶

call = substrate.compose_call(
    'Uniques', 'set_accept_ownership', {'maybe_collection': (None, 'u64')}
)

set_attribute¶

Set an attribute for a collection or item.

Origin must be either ForceOrigin or Signed and the sender should be the Owner of the collection.

If the origin is Signed, then funds of signer are reserved according to the formula: MetadataDepositBase + DepositPerByte * (key.len + value.len) taking into account any already reserved funds.

collection: The identifier of the collection whose item's metadata to set.
maybe_item: The identifier of the item whose metadata to set.
key: The key of the attribute.
value: The value to which to set the attribute.

Emits AttributeSet.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
maybe_item	`Option<T::ItemId>`
key	`BoundedVec<u8, T::KeyLimit>`
value	`BoundedVec<u8, T::ValueLimit>`

Python¶

call = substrate.compose_call(
    'Uniques', 'set_attribute', {
    'collection': 'u64',
    'key': 'Bytes',
    'maybe_item': (None, 'u128'),
    'value': 'Bytes',
}
)

set_collection_max_supply¶

Set the maximum amount of items a collection could have.

Origin must be either ForceOrigin or Signed and the sender should be the Owner of the collection.

Note: This function can only succeed once per collection.

collection: The identifier of the collection to change.
max_supply: The maximum amount of items a collection could have.

Emits CollectionMaxSupplySet event when successful.

Attributes¶

Name	Type
collection	`T::CollectionId`
max_supply	`u32`

Python¶

call = substrate.compose_call(
    'Uniques', 'set_collection_max_supply', {
    'collection': 'u64',
    'max_supply': 'u32',
}
)

set_collection_metadata¶

Set the metadata for a collection.

Origin must be either ForceOrigin or Signed and the sender should be the Owner of the collection.

If the origin is Signed, then funds of signer are reserved according to the formula: MetadataDepositBase + DepositPerByte * data.len taking into account any already reserved funds.

collection: The identifier of the item whose metadata to update.
data: The general information of this item. Limited in length by StringLimit.
is_frozen: Whether the metadata should be frozen against further changes.

Emits CollectionMetadataSet.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
data	`BoundedVec<u8, T::StringLimit>`
is_frozen	`bool`

Python¶

call = substrate.compose_call(
    'Uniques', 'set_collection_metadata', {
    'collection': 'u64',
    'data': 'Bytes',
    'is_frozen': 'bool',
}
)

set_metadata¶

Set the metadata for an item.

Origin must be either ForceOrigin or Signed and the sender should be the Owner of the collection.

If the origin is Signed, then funds of signer are reserved according to the formula: MetadataDepositBase + DepositPerByte * data.len taking into account any already reserved funds.

collection: The identifier of the collection whose item's metadata to set.
item: The identifier of the item whose metadata to set.
data: The general information of this item. Limited in length by StringLimit.
is_frozen: Whether the metadata should be frozen against further changes.

Emits MetadataSet.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`
data	`BoundedVec<u8, T::StringLimit>`
is_frozen	`bool`

Python¶

call = substrate.compose_call(
    'Uniques', 'set_metadata', {
    'collection': 'u64',
    'data': 'Bytes',
    'is_frozen': 'bool',
    'item': 'u128',
}
)

set_price¶

Set (or reset) the price for an item.

Origin must be Signed and must be the owner of the asset item.

collection: The collection of the item.
item: The item to set the price for.
price: The price for the item. Pass None, to reset the price.
buyer: Restricts the buy operation to a specific account.

Emits ItemPriceSet on success if the price is not None. Emits ItemPriceRemoved on success if the price is None.

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`
price	`Option<ItemPrice<T, I>>`
whitelisted_buyer	`Option<AccountIdLookupOf<T>>`

Python¶

call = substrate.compose_call(
    'Uniques', 'set_price', {
    'collection': 'u64',
    'item': 'u128',
    'price': (None, 'u128'),
    'whitelisted_buyer': (
        None,
        {
            'Address20': '[u8; 20]',
            'Address32': '[u8; 32]',
            'Id': 'AccountId',
            'Index': (),
            'Raw': 'Bytes',
        },
    ),
}
)

set_team¶

Change the Issuer, Admin and Freezer of a collection.

Origin must be Signed and the sender should be the Owner of the collection.

collection: The collection whose team should be changed.
issuer: The new Issuer of this collection.
admin: The new Admin of this collection.
freezer: The new Freezer of this collection.

Emits TeamChanged.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
issuer	`AccountIdLookupOf<T>`
admin	`AccountIdLookupOf<T>`
freezer	`AccountIdLookupOf<T>`

Python¶

call = substrate.compose_call(
    'Uniques', 'set_team', {
    'admin': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'collection': 'u64',
    'freezer': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'issuer': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
}
)

thaw¶

Re-allow unprivileged transfer of an item.

Origin must be Signed and the sender should be the Freezer of the collection.

collection: The collection of the item to be thawed.
item: The item of the item to be thawed.

Emits Thawed.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`

Python¶

call = substrate.compose_call(
    'Uniques', 'thaw', {'collection': 'u64', 'item': 'u128'}
)

thaw_collection¶

Re-allow unprivileged transfers for a whole collection.

Origin must be Signed and the sender should be the Admin of the collection.

collection: The collection to be thawed.

Emits CollectionThawed.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`

Python¶

call = substrate.compose_call(
    'Uniques', 'thaw_collection', {'collection': 'u64'}
)

transfer¶

Move an item from the sender account to another.

This resets the approved account of the item.

Origin must be Signed and the signing account must be either: - the Admin of the collection; - the Owner of the item; - the approved delegate for the item (in this case, the approval is reset).

Arguments: - collection: The collection of the item to be transferred. - item: The item of the item to be transferred. - dest: The account to receive ownership of the item.

Emits Transferred.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
item	`T::ItemId`
dest	`AccountIdLookupOf<T>`

Python¶

call = substrate.compose_call(
    'Uniques', 'transfer', {
    'collection': 'u64',
    'dest': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'item': 'u128',
}
)

transfer_ownership¶

Change the Owner of a collection.

Origin must be Signed and the sender should be the Owner of the collection.

collection: The collection whose owner should be changed.
owner: The new Owner of this collection. They must have called set_accept_ownership with collection in order for this operation to succeed.

Emits OwnerChanged.

Weight: O(1)

Attributes¶

Name	Type
collection	`T::CollectionId`
owner	`AccountIdLookupOf<T>`

Python¶

call = substrate.compose_call(
    'Uniques', 'transfer_ownership', {
    'collection': 'u64',
    'owner': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
}
)

Events¶

ApprovalCancelled¶

An approval for a delegate account to transfer the item of an item collection was cancelled by its owner.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`
owner	`T::AccountId`	`AccountId`
delegate	`T::AccountId`	`AccountId`

ApprovedTransfer¶

An item of a collection has been approved by the owner for transfer by a delegate.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`
owner	`T::AccountId`	`AccountId`
delegate	`T::AccountId`	`AccountId`

AttributeCleared¶

Attribute metadata has been cleared for a collection or item.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
maybe_item	`Option<T::ItemId>`	`(None, 'u128')`
key	`BoundedVec<u8, T::KeyLimit>`	`Bytes`

AttributeSet¶

New attribute metadata has been set for a collection or item.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
maybe_item	`Option<T::ItemId>`	`(None, 'u128')`
key	`BoundedVec<u8, T::KeyLimit>`	`Bytes`
value	`BoundedVec<u8, T::ValueLimit>`	`Bytes`

Burned¶

An item was destroyed.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`
owner	`T::AccountId`	`AccountId`

CollectionFrozen¶

Some collection was frozen.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`

CollectionMaxSupplySet¶

Max supply has been set for a collection.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
max_supply	`u32`	`u32`

CollectionMetadataCleared¶

Metadata has been cleared for a collection.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`

CollectionMetadataSet¶

New metadata has been set for a collection.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
data	`BoundedVec<u8, T::StringLimit>`	`Bytes`
is_frozen	`bool`	`bool`

CollectionThawed¶

Some collection was thawed.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`

Created¶

A collection was created.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
creator	`T::AccountId`	`AccountId`
owner	`T::AccountId`	`AccountId`

Destroyed¶

A collection was destroyed.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`

ForceCreated¶

A collection was force-created.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
owner	`T::AccountId`	`AccountId`

Frozen¶

Some item was frozen.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`

Issued¶

An item was issued.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`
owner	`T::AccountId`	`AccountId`

ItemBought¶

An item was bought.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`
price	`ItemPrice<T, I>`	`u128`
seller	`T::AccountId`	`AccountId`
buyer	`T::AccountId`	`AccountId`

ItemPriceRemoved¶

The price for the instance was removed.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`

ItemPriceSet¶

The price was set for the instance.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`
price	`ItemPrice<T, I>`	`u128`
whitelisted_buyer	`Option<T::AccountId>`	`(None, 'AccountId')`

ItemStatusChanged¶

A collection has had its attributes changed by the Force origin.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`

MetadataCleared¶

Metadata has been cleared for an item.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`

MetadataSet¶

New metadata has been set for an item.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`
data	`BoundedVec<u8, T::StringLimit>`	`Bytes`
is_frozen	`bool`	`bool`

OwnerChanged¶

The owner changed.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
new_owner	`T::AccountId`	`AccountId`

OwnershipAcceptanceChanged¶

Ownership acceptance has changed for an account.

Attributes¶

Name	Type	Composition
who	`T::AccountId`	`AccountId`
maybe_collection	`Option<T::CollectionId>`	`(None, 'u64')`

Redeposited¶

Metadata has been cleared for an item.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
successful_items	`Vec<T::ItemId>`	`['u128']`

TeamChanged¶

The management team changed.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
issuer	`T::AccountId`	`AccountId`
admin	`T::AccountId`	`AccountId`
freezer	`T::AccountId`	`AccountId`

Thawed¶

Some item was thawed.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`

Transferred¶

An item was transferred.

Attributes¶

Name	Type	Composition
collection	`T::CollectionId`	`u64`
item	`T::ItemId`	`u128`
from	`T::AccountId`	`AccountId`
to	`T::AccountId`	`AccountId`

Storage functions¶

Account¶

The items held by any given account; set out this way so that items owned by a single account can be enumerated.

Python¶

result = substrate.query(
    'Uniques', 'Account', ['AccountId', 'u64', 'u128']
)

Return value¶

()

Asset¶

The items in existence and their ownership details.

Python¶

result = substrate.query(
    'Uniques', 'Asset', ['u64', 'u128']
)

Return value¶

{'approved': (None, 'AccountId'), 'deposit': 'u128', 'is_frozen': 'bool', 'owner': 'AccountId'}

Attribute¶

Attributes of a collection.

Python¶

result = substrate.query(
    'Uniques', 'Attribute', ['u64', (None, 'u128'), 'Bytes']
)

Return value¶

('Bytes', 'u128')

Class¶

Details of a collection.

Python¶

result = substrate.query(
    'Uniques', 'Class', ['u64']
)

Return value¶

{
    'admin': 'AccountId',
    'attributes': 'u32',
    'free_holding': 'bool',
    'freezer': 'AccountId',
    'is_frozen': 'bool',
    'issuer': 'AccountId',
    'item_metadatas': 'u32',
    'items': 'u32',
    'owner': 'AccountId',
    'total_deposit': 'u128',
}

ClassAccount¶

The collections owned by any given account; set out this way so that collections owned by a single account can be enumerated.

Python¶

result = substrate.query(
    'Uniques', 'ClassAccount', ['AccountId', 'u64']
)

Return value¶

()

ClassMetadataOf¶

Metadata of a collection.

Python¶

result = substrate.query(
    'Uniques', 'ClassMetadataOf', ['u64']
)

Return value¶

{'data': 'Bytes', 'deposit': 'u128', 'is_frozen': 'bool'}

CollectionMaxSupply¶

Keeps track of the number of items a collection might have.

Python¶

result = substrate.query(
    'Uniques', 'CollectionMaxSupply', ['u64']
)

Return value¶

'u32'

InstanceMetadataOf¶

Metadata of an item.

Python¶

result = substrate.query(
    'Uniques', 'InstanceMetadataOf', ['u64', 'u128']
)

Return value¶

{'data': 'Bytes', 'deposit': 'u128', 'is_frozen': 'bool'}

ItemPriceOf¶

Price of an asset instance.

Python¶

result = substrate.query(
    'Uniques', 'ItemPriceOf', ['u64', 'u128']
)

Return value¶

('u128', (None, 'AccountId'))

OwnershipAcceptance¶

The collection, if any, of which an account is willing to take ownership.

Python¶

result = substrate.query(
    'Uniques', 'OwnershipAcceptance', ['AccountId']
)

Return value¶

'u64'

Constants¶

AttributeDepositBase¶

The basic amount of funds that must be reserved when adding an attribute to an item.

Value¶

100000000000000000

Python¶

constant = substrate.get_constant('Uniques', 'AttributeDepositBase')

CollectionDeposit¶

The basic amount of funds that must be reserved for collection.

Value¶

100000000000000000000

Python¶

constant = substrate.get_constant('Uniques', 'CollectionDeposit')

DepositPerByte¶

The additional funds that must be reserved for the number of bytes store in metadata, either "normal" metadata or attribute metadata.

Value¶

10000000000000000

Python¶

constant = substrate.get_constant('Uniques', 'DepositPerByte')

ItemDeposit¶

The basic amount of funds that must be reserved for an item.

Value¶

100000000000000000

Python¶

constant = substrate.get_constant('Uniques', 'ItemDeposit')

KeyLimit¶

The maximum length of an attribute key.

Value¶

Python¶

constant = substrate.get_constant('Uniques', 'KeyLimit')

MetadataDepositBase¶

The basic amount of funds that must be reserved when adding metadata to your item.

Value¶

100000000000000000

Python¶

constant = substrate.get_constant('Uniques', 'MetadataDepositBase')

StringLimit¶

The maximum length of data stored on-chain.

Value¶

Python¶

constant = substrate.get_constant('Uniques', 'StringLimit')

ValueLimit¶

The maximum length of an attribute value.

Value¶

Python¶

constant = substrate.get_constant('Uniques', 'ValueLimit')

Errors¶

AlreadyExists¶

The item ID has already been used for an item.

BadWitness¶

Invalid witness data given.

BidTooLow¶

The provided bid is too low.

Frozen¶

The item or collection is frozen.

InUse¶

The item ID is already taken.

Locked¶

The item is locked.

MaxSupplyAlreadySet¶

The max supply has already been set.

MaxSupplyReached¶

All items have been minted.

MaxSupplyTooSmall¶

The provided max supply is less to the amount of items a collection already has.

NoDelegate¶

There is no delegate approved.

NoPermission¶

The signing account has no permission to do the operation.

NotForSale¶

Item is not for sale.

Unaccepted¶

The named owner has not signed ownership of the collection is acceptable.

Unapproved¶

No approval exists that would allow the transfer.

UnknownCollection¶

The given item ID is unknown.

UnknownItem¶

The given item ID is unknown.

WrongDelegate¶

The delegate turned out to be different to what was expected.

WrongOwner¶

The owner turned out to be different to what was expected.