UTXO Advanced Ledger Extensions Library
The Corda 5 Advanced UTXO Unspent Transaction Output. The unspent output of a cryptocurrency transaction, representing the amount of digital currency that has not been spent and is available for use in future transactions. Ledger Extensions library adds several powerful features to Corda 5’s standard UTXO ledger. These features have been selected and designed to solve common problems that CorDapp Corda Distributed Application. A Java (or any JVM targeting language) application built using the Corda build toolchain and CorDapp API to solve some problem that is best solved in a decentralized manner. developers face when building states An immutable object representing a fact known by one or more participants at a specific point in time. You can use states to represent any type of data, and any kind of fact. and contracts on Corda.
The following table provide an overview of each major feature that has been implemented in the Corda 5 Advanced UTXO Ledger Extensions library. These features can be used together; for example, a state could be designed to be fungible, issuable, and ownable.
| State | Description |
|---|---|
| Chainable | Represents strictly linear state chains, where every state in the chain points to the previous state in the chain. This could be thought of as a similar concept to a blockchain, where each new block points to the previous block. |
| Fungible | Represents states that have a scalar numeric quantity, and can be split, merged, and mutually exchanged with other fungible states of the same class. Fungible states represent the building blocks for states like tokens. |
| Identifiable | Represents states that have a unique identifier that is guaranteed unique at the network level. Identifiable states are designed to evolve over time, where unique identifiers can be used to resolve the history of the identifiable state. |
| Issuable | Represents states that have an issuer. Typically an issuer is responsible for signing transactions where issuable states are issued or redeemed. |
| Ownable | Represents states that have an owner. Typically an owner is responsible for signing transactions where ownable states are transferred from one owner to another. |
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