Attestation¶

Calls¶

add¶

See [Pallet::add].

Attributes¶

Name	Type
claim_hash	`ClaimHashOf<T>`
ctype_hash	`CtypeHashOf<T>`
authorization	`Option<T::AccessControl>`

Python¶

call = substrate.compose_call(
    'Attestation', 'add', {
    'authorization': (
        None,
        {
            'Delegation': {
                'max_checks': 'u32',
                'subject_node_id': 'scale_info::12',
            },
        },
    ),
    'claim_hash': 'scale_info::12',
    'ctype_hash': 'scale_info::12',
}
)

change_deposit_owner¶

See [Pallet::change_deposit_owner].

Attributes¶

Name	Type
claim_hash	`ClaimHashOf<T>`

Python¶

call = substrate.compose_call(
    'Attestation', 'change_deposit_owner', {'claim_hash': 'scale_info::12'}
)

reclaim_deposit¶

See [Pallet::reclaim_deposit].

Attributes¶

Name	Type
claim_hash	`ClaimHashOf<T>`

Python¶

call = substrate.compose_call(
    'Attestation', 'reclaim_deposit', {'claim_hash': 'scale_info::12'}
)

remove¶

See [Pallet::remove].

Attributes¶

Name	Type
claim_hash	`ClaimHashOf<T>`
authorization	`Option<T::AccessControl>`

Python¶

call = substrate.compose_call(
    'Attestation', 'remove', {
    'authorization': (
        None,
        {
            'Delegation': {
                'max_checks': 'u32',
                'subject_node_id': 'scale_info::12',
            },
        },
    ),
    'claim_hash': 'scale_info::12',
}
)

revoke¶

See [Pallet::revoke].

Attributes¶

Name	Type
claim_hash	`ClaimHashOf<T>`
authorization	`Option<T::AccessControl>`

Python¶

call = substrate.compose_call(
    'Attestation', 'revoke', {
    'authorization': (
        None,
        {
            'Delegation': {
                'max_checks': 'u32',
                'subject_node_id': 'scale_info::12',
            },
        },
    ),
    'claim_hash': 'scale_info::12',
}
)

update_deposit¶

See [Pallet::update_deposit].

Attributes¶

Name	Type
claim_hash	`ClaimHashOf<T>`

Python¶

call = substrate.compose_call(
    'Attestation', 'update_deposit', {'claim_hash': 'scale_info::12'}
)

Events¶

AttestationCreated¶

A new attestation has been created. [attester ID, claim hash, CType hash, (optional) delegation ID]

Attributes¶

Name	Type	Composition
None	`AttesterOf<T>`	`AccountId`
None	`ClaimHashOf<T>`	`scale_info::12`
None	`CtypeHashOf<T>`	`scale_info::12`
None	`Option<AuthorizationIdOf<T>>`	`(None, {'Delegation': 'scale_info::12'})`

AttestationRemoved¶

An attestation has been removed. [account id, claim hash]

Attributes¶

Name	Type	Composition
None	`AttesterOf<T>`	`AccountId`
None	`ClaimHashOf<T>`	`scale_info::12`

AttestationRevoked¶

An attestation has been revoked. [account id, claim hash]

Attributes¶

Name	Type	Composition
None	`AttesterOf<T>`	`AccountId`
None	`ClaimHashOf<T>`	`scale_info::12`

DepositReclaimed¶

The deposit owner reclaimed a deposit by removing an attestation. [account id, claim hash]

Attributes¶

Name	Type	Composition
None	`AccountIdOf<T>`	`AccountId`
None	`ClaimHashOf<T>`	`scale_info::12`

Storage functions¶

Attestations¶

Attestations stored on chain.

It maps from a claim hash to the full attestation.

Python¶

result = substrate.query(
    'Attestation', 'Attestations', ['scale_info::12']
)

Return value¶

{
    'attester': 'AccountId',
    'authorization_id': (None, {'Delegation': 'scale_info::12'}),
    'ctype_hash': 'scale_info::12',
    'deposit': {'amount': 'u128', 'owner': 'AccountId'},
    'revoked': 'bool',
}

ExternalAttestations¶

Delegated attestations stored on chain.

It maps from a delegation ID to a vector of claim hashes.

Python¶

result = substrate.query(
    'Attestation', 'ExternalAttestations', [{'Delegation': 'scale_info::12'}, 'scale_info::12']
)

Return value¶

'bool'

Constants¶

Deposit¶

The deposit that is required for storing an attestation.

Value¶

120950000000000

Python¶

constant = substrate.get_constant('Attestation', 'Deposit')

MaxDelegatedAttestations¶

The maximum number of delegated attestations which can be made by the same delegation.

Value¶

Python¶

constant = substrate.get_constant('Attestation', 'MaxDelegatedAttestations')

Errors¶

AlreadyAttested¶

There is already an attestation with the same claim hash stored on chain.

AlreadyRevoked¶

The attestation has already been revoked.

CTypeMismatch¶

The attestation CType does not match the CType specified in the delegation hierarchy root.

MaxDelegatedAttestationsExceeded¶

The maximum number of delegated attestations has already been reached for the corresponding delegation id such that another one cannot be added.

NotAuthorized¶

The call origin is not authorized to change the attestation.

NotFound¶

No attestation on chain matching the claim hash.