Events Smart Contract Standard v.0.0.2

Specifications

Public Variables

string public version

Smart Contract Standard version.

string public metadata

IPFS merkle root hash.

mapping (address => uint) public owners

Array with tokens owners balance.

mapping (bytes32 => address) public allocatedTickets

Array with list of allocated tickets tokens.

mapping (bytes32 => address) public redeemedTickets

Array with list of redeemed tickets tokens.

Methods

function allocate(address _to, bytes32 _ticket) external returns(bool status)

Allocate _ticket token _to address and MUST fire the TicketAllocated event. The function SHOULD throw if the _ticket was already allocated or redeemed.

function transfer(address _to, bytes32 _ticket) external returns(bool status)

Transfer _ticket token _from method caller address _to another address and MUST fire the TicketTransferred event. The function SHOULD throw if the _from account does not own _ticket token.

function transferFrom(address _from, address _to, bytes32 _ticket) external returns(bool status)

Transfer _ticket token _from address _to another address and MUST fire the TicketTransferred event. The function SHOULD throw if the _from account does not own _ticket token.

function redeem(address _from, bytes32 _ticket) external returns(bool status)

Redeem _ticket token _from address and MUST fire the TicketRedeemed event. Function SHOULD throw if _from address not own _ticket token, or token already used.

function refund(address _to, bytes32 _ticket) external returns(bool status)

Refund _ticket token _to address and MUST fire TicketRefunded event.

function function updateMetadata(string _ipfs) external returns(bool)

Set new _ipfs hash with updated metadata.

Events

TicketAllocated(address _to, bytes32 _ticket, address _manager)

Triggered when _ticket token are allocated.

TicketRedeemed(address _from, bytes32 _ticket, address _manager)

Triggered when _ticket token are redeemed.

TicketTransferred(address _from, address _to, bytes32 _ticket, address _manager)

Triggered when _ticket tokens are transferred.

TicketRefunded(address _to, bytes32 _ticket, address _manager)

Triggered when _ticket token are refunded.

MetadataUpdated(string _metadata)

Triggered when metadata hash is updated.

IPFS Metadata Structure

Event Metadata

Example: https://ipfs.io/ipfs/Qmc4QEgAFeM7jiqZA8AfSZjG2bXuj7ScP1pqgNU6Ff8A9y/

Ticket Metadata

Example: https://ipfs.io/ipfs/Qmcvwt7DJdgephhpcr8iqwMkcy4Nj5Uz1sGPb5x2vHt4jW/

Implementation

Expansion of this standard for event tickets market can be found at crypto.tickets GitHub

cryptoticket / smartticket