KnownOriginDigitalAsset

0xfbeef911dc5821886e1dda71586d90ed28174b7d

renounceOwnership keyboard_arrow_up

  function renounceOwnership() public onlyOwner {
    emit OwnershipRenounced(owner);
    owner = address(0);
  }

transferOwnership keyboard_arrow_up

  function transferOwnership(address _newOwner) public onlyOwner {
    _transferOwnership(_newOwner);
  }

pause keyboard_arrow_up

  function pause() public onlyOwner whenNotPaused {
    paused = true;
    emit Pause();
  }

unpause keyboard_arrow_up

  function unpause() public onlyOwner whenPaused {
    paused = false;
    emit Unpause();
  }

constructor keyboard_arrow_up

  function() external {
  }

reclaimEther keyboard_arrow_up

  function reclaimEther() external onlyOwner {
    owner.transfer(address(this).balance);
  }

addAddressToAccessControl keyboard_arrow_up

  function addAddressToAccessControl(address _operator, uint8 _role)
  public
  onlyIfKnownOrigin
  {
    roles[_role].add(_operator);
    emit RoleAdded(_operator, _role);
  }

removeAddressFromAccessControl keyboard_arrow_up

  function removeAddressFromAccessControl(address _operator, uint8 _role)
  public
  onlyIfKnownOrigin
  {
    roles[_role].remove(_operator);
    emit RoleRemoved(_operator, _role);
  }

checkRole keyboard_arrow_up

  function checkRole(address _operator, uint8 _role)
  public
  view
  {
    roles[_role].check(_operator);
  }

hasRole keyboard_arrow_up

  function hasRole(address _operator, uint8 _role)
  public
  view
  returns (bool)
  {
    return roles[_role].has(_operator);
  }

balanceOf keyboard_arrow_up

  function balanceOf(address _owner) public view returns (uint256) {
    require(_owner != address(0));
    return ownedTokensCount[_owner];
  }

ownerOf keyboard_arrow_up

  function ownerOf(uint256 _tokenId) public view returns (address) {
    address owner = tokenOwner[_tokenId];
    require(owner != address(0));
    return owner;
  }

exists keyboard_arrow_up

  function exists(uint256 _tokenId) public view returns (bool) {
    address owner = tokenOwner[_tokenId];
    return owner != address(0);
  }

approve keyboard_arrow_up

  function approve(address _to, uint256 _tokenId) public {
    address owner = ownerOf(_tokenId);
    require(_to != owner);
    require(msg.sender == owner || isApprovedForAll(owner, msg.sender));

    tokenApprovals[_tokenId] = _to;
    emit Approval(owner, _to, _tokenId);
  }

getApproved keyboard_arrow_up

  function getApproved(uint256 _tokenId) public view returns (address) {
    return tokenApprovals[_tokenId];
  }

setApprovalForAll keyboard_arrow_up

  function setApprovalForAll(address _to, bool _approved) public {
    require(_to != msg.sender);
    operatorApprovals[msg.sender][_to] = _approved;
    emit ApprovalForAll(msg.sender, _to, _approved);
  }

isApprovedForAll keyboard_arrow_up

  function isApprovedForAll(
    address _owner,
    address _operator
  )
    public
    view
    returns (bool)
  {
    return operatorApprovals[_owner][_operator];
  }

transferFrom keyboard_arrow_up

  function transferFrom(
    address _from,
    address _to,
    uint256 _tokenId
  )
    public
  {
    require(isApprovedOrOwner(msg.sender, _tokenId));
    require(_from != address(0));
    require(_to != address(0));

    clearApproval(_from, _tokenId);
    removeTokenFrom(_from, _tokenId);
    addTokenTo(_to, _tokenId);

    emit Transfer(_from, _to, _tokenId);
  }

safeTransferFrom keyboard_arrow_up

  function safeTransferFrom(
    address _from,
    address _to,
    uint256 _tokenId
  )
    public
  {
    // solium-disable-next-line arg-overflow
    safeTransferFrom(_from, _to, _tokenId, "");
  }

safeTransferFrom keyboard_arrow_up

  function safeTransferFrom(
    address _from,
    address _to,
    uint256 _tokenId,
    bytes _data
  )
    public
  {
    transferFrom(_from, _to, _tokenId);
    // solium-disable-next-line arg-overflow
    require(checkAndCallSafeTransfer(_from, _to, _tokenId, _data));
  }

name keyboard_arrow_up

  function name() external view returns (string) {
    return name_;
  }

symbol keyboard_arrow_up

  function symbol() external view returns (string) {
    return symbol_;
  }

tokenURI keyboard_arrow_up

  function tokenURI(uint256 _tokenId) public view onlyValidTokenId(_tokenId) returns (string) {
    return Strings.strConcat(tokenBaseURI, tokenURIs[_tokenId]);
  }

totalSupply keyboard_arrow_up

  function totalSupply() public view returns (uint256) {
    return allTokens.length;
  }

tokenOfOwnerByIndex keyboard_arrow_up

  function tokenOfOwnerByIndex(
    address _owner,
    uint256 _index
  )
    public
    view
    returns (uint256)
  {
    require(_index < balanceOf(_owner));
    return ownedTokens[_owner][_index];
  }

tokenByIndex keyboard_arrow_up

  function tokenByIndex(uint256 _index) public view returns (uint256) {
    require(_index < totalSupply());
    return allTokens[_index];
  }

supportsInterface keyboard_arrow_up

  function supportsInterface(bytes4 _interfaceId)
    external
    view
    returns (bool)
  {
    return supportedInterfaces[_interfaceId];
  }

createActiveEdition keyboard_arrow_up

  function createActiveEdition(
    uint256 _editionNumber,
    bytes32 _editionData,
    uint256 _editionType,
    uint256 _startDate,
    uint256 _endDate,
    address _artistAccount,
    uint256 _artistCommission,
    uint256 _priceInWei,
    string _tokenURI,
    uint256 _totalAvailable
  )
  public
  onlyIfKnownOrigin
  returns (bool)
  {
    return _createEdition(_editionNumber, _editionData, _editionType, _startDate, _endDate, _artistAccount, _artistCommission, _priceInWei, _tokenURI, _totalAvailable, true);
  }

createInactiveEdition keyboard_arrow_up

  function createInactiveEdition(
    uint256 _editionNumber,
    bytes32 _editionData,
    uint256 _editionType,
    uint256 _startDate,
    uint256 _endDate,
    address _artistAccount,
    uint256 _artistCommission,
    uint256 _priceInWei,
    string _tokenURI,
    uint256 _totalAvailable
  )
  public
  onlyIfKnownOrigin
  returns (bool)
  {
    return _createEdition(_editionNumber, _editionData, _editionType, _startDate, _endDate, _artistAccount, _artistCommission, _priceInWei, _tokenURI, _totalAvailable, false);
  }

createActivePreMintedEdition keyboard_arrow_up

  function createActivePreMintedEdition(
    uint256 _editionNumber,
    bytes32 _editionData,
    uint256 _editionType,
    uint256 _startDate,
    uint256 _endDate,
    address _artistAccount,
    uint256 _artistCommission,
    uint256 _priceInWei,
    string _tokenURI,
    uint256 _totalSupply,
    uint256 _totalAvailable
  )
  public
  onlyIfKnownOrigin
  returns (bool)
  {
    _createEdition(_editionNumber, _editionData, _editionType, _startDate, _endDate, _artistAccount, _artistCommission, _priceInWei, _tokenURI, _totalAvailable, true);
    updateTotalSupply(_editionNumber, _totalSupply);
    return true;
  }

createInactivePreMintedEdition keyboard_arrow_up

  function createInactivePreMintedEdition(
    uint256 _editionNumber,
    bytes32 _editionData,
    uint256 _editionType,
    uint256 _startDate,
    uint256 _endDate,
    address _artistAccount,
    uint256 _artistCommission,
    uint256 _priceInWei,
    string _tokenURI,
    uint256 _totalSupply,
    uint256 _totalAvailable
  )
  public
  onlyIfKnownOrigin
  returns (bool)
  {
    _createEdition(_editionNumber, _editionData, _editionType, _startDate, _endDate, _artistAccount, _artistCommission, _priceInWei, _tokenURI, _totalAvailable, false);
    updateTotalSupply(_editionNumber, _totalSupply);
    return true;
  }

purchase keyboard_arrow_up

  function purchase(uint256 _editionNumber)
  public
  payable
  returns (uint256) {
    return purchaseTo(msg.sender, _editionNumber);
  }

purchaseTo keyboard_arrow_up

  function purchaseTo(address _to, uint256 _editionNumber)
  public
  payable
  whenNotPaused
  onlyRealEdition(_editionNumber)
  onlyActiveEdition(_editionNumber)
  onlyAvailableEdition(_editionNumber)
  onlyPurchaseDuringWindow(_editionNumber)
  returns (uint256) {

    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    require(msg.value >= _editionDetails.priceInWei, "Value must be greater than price of edition");

    // Construct next token ID e.g. 100000 + 1 = ID of 100001 (this first in the edition set)
    uint256 _tokenId = _nextTokenId(_editionNumber);

    // Create the token
    _mintToken(_to, _tokenId, _editionNumber, _editionDetails.tokenURI);

    // Splice funds and handle commissions
    _handleFunds(_editionNumber, _editionDetails.priceInWei, _editionDetails.artistAccount, _editionDetails.artistCommission);

    // Broadcast purchase
    emit Purchase(_tokenId, _editionNumber, _to, msg.value);

    return _tokenId;
  }

mint keyboard_arrow_up

  function mint(address _to, uint256 _editionNumber)
  public
  onlyIfMinter
  onlyRealEdition(_editionNumber)
  onlyAvailableEdition(_editionNumber)
  returns (uint256) {
    // Construct next token ID e.g. 100000 + 1 = ID of 100001 (this first in the edition set)
    uint256 _tokenId = _nextTokenId(_editionNumber);

    // Create the token
    _mintToken(_to, _tokenId, _editionNumber, editionNumberToEditionDetails[_editionNumber].tokenURI);

    // Create the token
    return _tokenId;
  }

underMint keyboard_arrow_up

  function underMint(address _to, uint256 _editionNumber)
  public
  onlyIfUnderMinter
  onlyRealEdition(_editionNumber)
  returns (uint256) {
    // Under mint token, meaning it takes one from the already sold version
    uint256 _tokenId = _underMintNextTokenId(_editionNumber);

    // If the next tokenId generate is more than the available number, abort as we have reached maximum under mint
    if (_tokenId > _editionNumber.add(editionNumberToEditionDetails[_editionNumber].totalAvailable)) {
      revert("Reached max tokenId, cannot under mint anymore");
    }

    // Create the token
    _mintToken(_to, _tokenId, _editionNumber, editionNumberToEditionDetails[_editionNumber].tokenURI);

    // Create the token
    return _tokenId;
  }

burn keyboard_arrow_up

  function burn(uint256 _tokenId) public onlyIfKnownOrigin {

    // Clear from parents
    super._burn(ownerOf(_tokenId), _tokenId);

    // Get hold of the edition for cleanup
    uint256 _editionNumber = tokenIdToEditionNumber[_tokenId];

    // Delete token ID mapping
    delete tokenIdToEditionNumber[_tokenId];

    // Delete tokens associated to the edition - this will leave a gap in the array of zero
    uint256[] storage tokenIdsForEdition = editionNumberToTokenIds[_editionNumber];
    uint256 editionTokenIdIndex = editionNumberToTokenIdIndex[_tokenId];
    delete tokenIdsForEdition[editionTokenIdIndex];
  }

batchTransfer keyboard_arrow_up

  function batchTransfer(address _to, uint256[] _tokenIds) public {
    for (uint i = 0; i < _tokenIds.length; i++) {
      safeTransferFrom(ownerOf(_tokenIds[i]), _to, _tokenIds[i]);
    }
  }

batchTransferFrom keyboard_arrow_up

  function batchTransferFrom(address _from, address _to, uint256[] _tokenIds) public {
    for (uint i = 0; i < _tokenIds.length; i++) {
      transferFrom(_from, _to, _tokenIds[i]);
    }
  }

updateTokenBaseURI keyboard_arrow_up

  function updateTokenBaseURI(string _newBaseURI)
  external
  onlyIfKnownOrigin {
    require(bytes(_newBaseURI).length != 0, "Base URI invalid");
    tokenBaseURI = _newBaseURI;
  }

updateKoCommissionAccount keyboard_arrow_up

  function updateKoCommissionAccount(address _koCommissionAccount)
  external
  onlyIfKnownOrigin {
    require(_koCommissionAccount != address(0), "Invalid address");
    koCommissionAccount = _koCommissionAccount;
  }

updateEditionTokenURI keyboard_arrow_up

  function updateEditionTokenURI(uint256 _editionNumber, string _uri)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    editionNumberToEditionDetails[_editionNumber].tokenURI = _uri;
  }

updatePriceInWei keyboard_arrow_up

  function updatePriceInWei(uint256 _editionNumber, uint256 _priceInWei)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    editionNumberToEditionDetails[_editionNumber].priceInWei = _priceInWei;
  }

updateArtistCommission keyboard_arrow_up

  function updateArtistCommission(uint256 _editionNumber, uint256 _rate)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    editionNumberToEditionDetails[_editionNumber].artistCommission = _rate;
  }

updateArtistsAccount keyboard_arrow_up

  function updateArtistsAccount(uint256 _editionNumber, address _artistAccount)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {

    EditionDetails storage _originalEditionDetails = editionNumberToEditionDetails[_editionNumber];

    uint256 editionArtistIndex = editionNumberToArtistIndex[_editionNumber];

    // Get list of editions old artist works with
    uint256[] storage editionNumbersForArtist = artistToEditionNumbers[_originalEditionDetails.artistAccount];

    // Remove edition from artists lists
    delete editionNumbersForArtist[editionArtistIndex];

    // Add new artists to the list
    uint256 newArtistsEditionIndex = artistToEditionNumbers[_artistAccount].length;
    artistToEditionNumbers[_artistAccount].push(_editionNumber);
    editionNumberToArtistIndex[_editionNumber] = newArtistsEditionIndex;

    // Update the edition
    _originalEditionDetails.artistAccount = _artistAccount;
  }

updateEditionType keyboard_arrow_up

  function updateEditionType(uint256 _editionNumber, uint256 _editionType)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {

    EditionDetails storage _originalEditionDetails = editionNumberToEditionDetails[_editionNumber];

    // Get list of editions for old type
    uint256[] storage editionNumbersForType = editionTypeToEditionNumber[_originalEditionDetails.editionType];

    // Remove edition from old type list
    uint256 editionTypeIndex = editionNumberToTypeIndex[_editionNumber];
    delete editionNumbersForType[editionTypeIndex];

    // Add new type to the list
    uint256 newTypeEditionIndex = editionTypeToEditionNumber[_editionType].length;
    editionTypeToEditionNumber[_editionType].push(_editionNumber);
    editionNumberToTypeIndex[_editionNumber] = newTypeEditionIndex;

    // Update the edition
    _originalEditionDetails.editionType = _editionType;
  }

updateActive keyboard_arrow_up

  function updateActive(uint256 _editionNumber, bool _active)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    editionNumberToEditionDetails[_editionNumber].active = _active;
  }

updateTotalSupply keyboard_arrow_up

  function updateTotalSupply(uint256 _editionNumber, uint256 _totalSupply)
  public
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    require(tokensOfEdition(_editionNumber).length <= _totalSupply, "Can not lower totalSupply to below the number of tokens already in existence");
    editionNumberToEditionDetails[_editionNumber].totalSupply = _totalSupply;
  }

updateTotalAvailable keyboard_arrow_up

  function updateTotalAvailable(uint256 _editionNumber, uint256 _totalAvailable)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];

    require(_editionDetails.totalSupply <= _totalAvailable, "Unable to reduce available amount to the below the number totalSupply");

    uint256 originalAvailability = _editionDetails.totalAvailable;
    _editionDetails.totalAvailable = _totalAvailable;
    totalNumberAvailable = totalNumberAvailable.sub(originalAvailability).add(_totalAvailable);
  }

updateStartDate keyboard_arrow_up

  function updateStartDate(uint256 _editionNumber, uint256 _startDate)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    editionNumberToEditionDetails[_editionNumber].startDate = _startDate;
  }

updateEndDate keyboard_arrow_up

  function updateEndDate(uint256 _editionNumber, uint256 _endDate)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    editionNumberToEditionDetails[_editionNumber].endDate = _endDate;
  }

updateOptionalCommission keyboard_arrow_up

  function updateOptionalCommission(uint256 _editionNumber, uint256 _rate, address _recipient)
  external
  onlyIfKnownOrigin
  onlyRealEdition(_editionNumber) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    uint256 artistCommission = _editionDetails.artistCommission;

    if (_rate > 0) {
      require(_recipient != address(0), "Setting a rate must be accompanied by a valid address");
    }
    require(artistCommission.add(_rate) <= 100, "Cant set commission greater than 100%");

    editionNumberToOptionalCommissionSplit[_editionNumber] = CommissionSplit({rate : _rate, recipient : _recipient});
  }

setTokenURI keyboard_arrow_up

  function setTokenURI(uint256 _tokenId, string _uri)
  external
  onlyIfKnownOrigin
  onlyValidTokenId(_tokenId) {
    _setTokenURI(_tokenId, _uri);
  }

editionOfTokenId keyboard_arrow_up

  function editionOfTokenId(uint256 _tokenId) public view returns (uint256 _editionNumber) {
    return tokenIdToEditionNumber[_tokenId];
  }

editionsOfType keyboard_arrow_up

  function editionsOfType(uint256 _type) public view returns (uint256[] _editionNumbers) {
    return editionTypeToEditionNumber[_type];
  }

artistsEditions keyboard_arrow_up

  function artistsEditions(address _artistsAccount) public view returns (uint256[] _editionNumbers) {
    return artistToEditionNumbers[_artistsAccount];
  }

tokensOfEdition keyboard_arrow_up

  function tokensOfEdition(uint256 _editionNumber) public view returns (uint256[] _tokenIds) {
    return editionNumberToTokenIds[_editionNumber];
  }

tokensOf keyboard_arrow_up

  function tokensOf(address _owner) public view returns (uint256[] _tokenIds) {
    return ownedTokens[_owner];
  }

editionExists keyboard_arrow_up

  function editionExists(uint256 _editionNumber) public view returns (bool) {
    if (_editionNumber == 0) {
      return false;
    }
    EditionDetails storage editionNumber = editionNumberToEditionDetails[_editionNumber];
    return editionNumber.editionNumber == _editionNumber;
  }

editionOptionalCommission keyboard_arrow_up

  function editionOptionalCommission(uint256 _editionNumber) public view returns (uint256 _rate, address _recipient) {
    CommissionSplit storage commission = editionNumberToOptionalCommissionSplit[_editionNumber];
    return (commission.rate, commission.recipient);
  }

detailsOfEdition keyboard_arrow_up

  function detailsOfEdition(uint256 editionNumber)
  public view
  onlyRealEdition(editionNumber)
  returns (
    bytes32 _editionData,
    uint256 _editionType,
    uint256 _startDate,
    uint256 _endDate,
    address _artistAccount,
    uint256 _artistCommission,
    uint256 _priceInWei,
    string _tokenURI,
    uint256 _totalSupply,
    uint256 _totalAvailable,
    bool _active
  ) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[editionNumber];
    return (
    _editionDetails.editionData,
    _editionDetails.editionType,
    _editionDetails.startDate,
    _editionDetails.endDate,
    _editionDetails.artistAccount,
    _editionDetails.artistCommission,
    _editionDetails.priceInWei,
    Strings.strConcat(tokenBaseURI, _editionDetails.tokenURI),
    _editionDetails.totalSupply,
    _editionDetails.totalAvailable,
    _editionDetails.active
    );
  }

tokenData keyboard_arrow_up

  function tokenData(uint256 _tokenId)
  public view
  onlyValidTokenId(_tokenId)
  returns (
    uint256 _editionNumber,
    uint256 _editionType,
    bytes32 _editionData,
    string _tokenURI,
    address _owner
  ) {
    uint256 editionNumber = tokenIdToEditionNumber[_tokenId];
    EditionDetails storage editionDetails = editionNumberToEditionDetails[editionNumber];
    return (
    editionNumber,
    editionDetails.editionType,
    editionDetails.editionData,
    tokenURI(_tokenId),
    ownerOf(_tokenId)
    );
  }

tokenURISafe keyboard_arrow_up

  function tokenURISafe(uint256 _tokenId) public view returns (string) {
    return Strings.strConcat(tokenBaseURI, tokenURIs[_tokenId]);
  }

purchaseDatesToken keyboard_arrow_up

  function purchaseDatesToken(uint256 _tokenId) public view returns (uint256 _startDate, uint256 _endDate) {
    uint256 _editionNumber = tokenIdToEditionNumber[_tokenId];
    return purchaseDatesEdition(_editionNumber);
  }

priceInWeiToken keyboard_arrow_up

  function priceInWeiToken(uint256 _tokenId) public view returns (uint256 _priceInWei) {
    uint256 _editionNumber = tokenIdToEditionNumber[_tokenId];
    return priceInWeiEdition(_editionNumber);
  }

editionData keyboard_arrow_up

  function editionData(uint256 _editionNumber) public view returns (bytes32) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return _editionDetails.editionData;
  }

editionType keyboard_arrow_up

  function editionType(uint256 _editionNumber) public view returns (uint256) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return _editionDetails.editionType;
  }

purchaseDatesEdition keyboard_arrow_up

  function purchaseDatesEdition(uint256 _editionNumber) public view returns (uint256 _startDate, uint256 _endDate) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return (
    _editionDetails.startDate,
    _editionDetails.endDate
    );
  }

artistCommission keyboard_arrow_up

  function artistCommission(uint256 _editionNumber) public view returns (address _artistAccount, uint256 _artistCommission) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return (
    _editionDetails.artistAccount,
    _editionDetails.artistCommission
    );
  }

priceInWeiEdition keyboard_arrow_up

  function priceInWeiEdition(uint256 _editionNumber) public view returns (uint256 _priceInWei) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return _editionDetails.priceInWei;
  }

tokenURIEdition keyboard_arrow_up

  function tokenURIEdition(uint256 _editionNumber) public view returns (string) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return Strings.strConcat(tokenBaseURI, _editionDetails.tokenURI);
  }

editionActive keyboard_arrow_up

  function editionActive(uint256 _editionNumber) public view returns (bool) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return _editionDetails.active;
  }

totalRemaining keyboard_arrow_up

  function totalRemaining(uint256 _editionNumber) public view returns (uint256) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return _editionDetails.totalAvailable.sub(_editionDetails.totalSupply);
  }

totalAvailableEdition keyboard_arrow_up

  function totalAvailableEdition(uint256 _editionNumber) public view returns (uint256) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return _editionDetails.totalAvailable;
  }

totalSupplyEdition keyboard_arrow_up

  function totalSupplyEdition(uint256 _editionNumber) public view returns (uint256) {
    EditionDetails storage _editionDetails = editionNumberToEditionDetails[_editionNumber];
    return _editionDetails.totalSupply;
  }