IFrictionlessAttestationManager
Author: DEFYCA Labs S.à.r.l
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The IFrictionlessAttestationManager See the flow and description of the attestation workflow in the diagram at https://gitlab.com/dfyclabs/protocol/dfyclabs-tokens/-/raw/main/docs/img/frictionless-fund-deposit-flow-attestation.png
Functions
updateAttestationToken
Update the token address of the FrictionlessFundDepositToken for the currency_ and iban_ pair.
function updateAttestationToken(address tokenAddress_, string calldata iban_, string calldata currency_) external;Parameters
tokenAddress_
address
the address of deposit FrictionlessFundDepositToken
iban_
string
the IBAN associated with the FrictionlessFundDepositToken
currency_
string
the currency associated with the FrictionlessFundDepositToken throws FrictionlessAttestationManagerTokenZeroAddress if tokenAddress_ address is a zero address emits FrictionlessFundDepositAttestationTokenUpdated upon successful updating
confirmAttestation
Confirm the attestation by signing the signature, this is the proof of the attestation by the PERMISSIONED_FUND_ACCOUNTANT
function confirmAttestation(AttestationData calldata attestationData_, bytes calldata sig_) external;Parameters
attestationData_
AttestationData
attestation data to sign
sig_
bytes
the signature to sign by the PERMISSIONED_FUND_ACCOUNTANT throws FrictionlessAttestationManagerNotEnoughPermissions if the msg.sender does not have the role PERMISSIONED_FUND_ACCOUNTANT throws FrictionlessAttestationManagerInvalidAttestation if the attestation cannot be confirmed, meaning the signed attestation cannot be verified. emits FrictionlessFundDepositAttestationConfirmed upon successful signing
minBalance
Get the minimum balance amount configured, for which an attestation can be run. If the balance of the attestation is below the value configured, the error will be thrown. The minimum allowed is 10_000 or 0.01
function minBalance() external view returns (uint256);Returns
<none>
uint256
minimum attestation balance.
minWindow
Get minimum time (reportEnd - reportStart) in blocktime for which an attestation can be run. Typically this is 1 hour, and dependent on the availability of transaction data in the underlying fund account as specified by the IBAN. The minimum allowed is 300 seconds.
function minWindow() external view returns (uint256);Returns
<none>
uint256
minimum attestation window.
maxWindow
Get maximum time (reportEnd - reportStart) in blocktime for which an attestation can be run. Typically this is 30 days, aligned with the reporting as per regulation for the underlying fund and issuer of the deposit token. The maximum allowed is 365 days.
function maxWindow() external view returns (uint256);Returns
<none>
uint256
maximum attestation window.
getAccountAttestationDataKeys
Retrieves the keys of attestation data associated with a specific account identified by IBAN and currency.
function getAccountAttestationDataKeys(string calldata iban_, string calldata currency_)
external
view
returns (bytes32[] memory);Parameters
iban_
string
the IBAN associated with the FrictionlessFundDepositToken
currency_
string
the currency associated with the FrictionlessFundDepositToken
Returns
<none>
bytes32[]
the array of bytes32 attestation data keys associated with the account.
getAccountLastAttestationData
Retrieves the last attestation data associated with a specific account identified by IBAN and currency.
function getAccountLastAttestationData(string calldata iban_, string calldata currency_)
external
view
returns (AttestationData memory);Parameters
iban_
string
the IBAN associated with the FrictionlessFundDepositToken
currency_
string
the currency associated with the FrictionlessFundDepositToken
Returns
<none>
AttestationData
the AttestationData struct representing the last attestation data associated with the account.
getAccountLastAttestationDataKey
Retrieves the key of the last attestation data associated with a specific account identified by IBAN and currency.
function getAccountLastAttestationDataKey(string calldata iban_, string calldata currency_)
external
view
returns (bytes32);Parameters
iban_
string
the IBAN associated with the FrictionlessFundDepositToken
currency_
string
the currency associated with the FrictionlessFundDepositToken
Returns
<none>
bytes32
the last attestation data key associated with the account.
getAttestationData
Retrieves attestation data by the attestation data key.
function getAttestationData(bytes32 attestationDataKey_) external view returns (AttestationData memory);Parameters
attestationDataKey_
bytes32
the key identifying the attestation data
Returns
<none>
AttestationData
the AttestationData struct representing the attestation data associated with the given key.
getTokenAddress
Get the valid FrictionlessFundDepositToken for the currency_ and iban_ pair.
function getTokenAddress(string memory iban_, string memory currency_) external view returns (address);Parameters
iban_
string
the IBAN associated with the FrictionlessFundDepositToken
currency_
string
the currency associated with the FrictionlessFundDepositToken
Returns
<none>
address
the address of the valid FrictionlessFundDepositToken for the currency_ and iban_ pair
getAttestationDataHash
Mint a new attestation, it returns hash of attestation data to sign by the PERMISSIONED_FUND_ACCOUNTANT
function getAttestationDataHash(AttestationData calldata attestationData_) external view returns (bytes32);Parameters
attestationData_
AttestationData
the complete set of attestation data to for the PERMISSIONED_FUND_ACCOUNTANT to certify/sign.
Returns
<none>
bytes32
a hash of the attestationData which will be signed to confirm the attestation
getAccountAttestationKey
Retrieves the attestation data key associated with a specific account identified by currency and IBAN.
function getAccountAttestationKey(string calldata currency_, string calldata iban_) external pure returns (bytes32);Parameters
currency_
string
the currency associated with the FrictionlessFundDepositToken
iban_
string
the IBAN associated with the FrictionlessFundDepositToken
Returns
<none>
bytes32
the accound attestation key.
Events
FrictionlessFundDepositAttestationTokenUpdated
Emitted when the FrictionlessFundDepositToken is updated in the IFrictionlessAttestationManager.
event FrictionlessFundDepositAttestationTokenUpdated(
bytes32 accountAttestationKey, address newTokenAddress, address oldTokenAddress
);FrictionlessFundDepositAttestationConfirmed
Event emitted upon the confirmation of a FrictionlessFundDepositToken in the IFrictionlessAttestationManager
event FrictionlessFundDepositAttestationConfirmed(AttestationData attestationData);Errors
FrictionlessAttestationManagerCallerNotAProtocolTreasury
thrown if msg.sender address is not a PROTOCOL_TREASURY, during updateAttestationToken
error FrictionlessAttestationManagerCallerNotAProtocolTreasury(address caller);FrictionlessAttestationManagerTokenZeroAddress
thrown if tokenAddress_ address is a zero address, during updateAttestationToken
error FrictionlessAttestationManagerTokenZeroAddress();FrictionlessAttestationManagerPermissionsZeroAddress
thrown if permissionManagerAddr_ address is a zero address, during init
error FrictionlessAttestationManagerPermissionsZeroAddress();FrictionlessAttestationManagerInvalidToken
thrown if the FrictionlessFundDepositToken has not been registered for the IBAN, currency pair.
error FrictionlessAttestationManagerInvalidToken(string iban, string currency);FrictionlessAttestationManagerInvalidReport
thrown if the passed AttestationData report is invalid.
error FrictionlessAttestationManagerInvalidReport(AttestationData attestationData);FrictionlessAttestationManagerBalanceTooLow
thrown if the attestation balance is too small, below the configurable amount.
error FrictionlessAttestationManagerBalanceTooLow(uint256 balance);FrictionlessAttestationManagerDuplicateLastTxHash
thrown if the last transaction hash for the attestation has already been used, this avoids duplicate attestations.
error FrictionlessAttestationManagerDuplicateLastTxHash(string lastTxHash);FrictionlessAttestationManagerInvalidAttestationSigner
thrown if the attestation cannot be confirmed, meaning the signed attestation cannot be verified.
error FrictionlessAttestationManagerInvalidAttestationSigner(address signer, bytes32 attestationHash, bytes sig);Structs
AttestationData
struct to hold attestation data, which is designed to provide the most recent attestation of balance and verified last transaction in an attestation window.
struct AttestationData {
address tokenAddr;
string iban;
string currency;
uint256 reportStart;
uint256 reportEnd;
uint256 balance;
string lastTxHash;
}AccountAttestationData
struct to hold account attestation data
struct AccountAttestationData {
address attestationTokenAddr;
bytes32 lastAttestationDataKey;
EnumerableSet.Bytes32Set allAttestationDataKeys;
}