Corda Developer Bootcamp: Tokens
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The document introduces the Corda Token SDK, highlighting its benefits such as enhanced security through tokenization of sensitive data, improved liquidity of assets, and expanded access to financial markets via fractional ownership. It explains the creation and management of tokens using the SDK, including fixed and evolvable tokens and the processes for issuing, moving, and redeeming tokens. Additionally, it outlines key components and classes involved in token transactions within the Corda framework.
Corda Developer Bootcamp: Tokens
- 1. Introduction to Corda Token SDK
- 3. Why tokens? Security • No Sensitive Data – Enhanced security as Sensitive data replaced with tokens • Simplified Compliance – Reduced compliance scope. Increased liquidity • Improved Liquidity – assets that are currently locked up in illiquid form can be readily traded. Increased market access • Accessibility – fractional ownership brings in new set of owners. • Fund raising – ISO gives ability for fund raising direct to funders. New financial products • Ability to create net new financial products
- 4. Corda TokenSDK TokenSDK provides a standard library to create and manage tokens in Corda. Create Issue Move Redeem
- 6. Token SDK: TokenType Fixed Token Evolvable Token
- 8. Creating Tokens : Fixed Token TokenType myFixedToken = new TokenType(“PeterCoin”, 4); open class TokenType( open val tokenIdentifier: String, open val fractionDigits: Int ) Example: FiatCurrency Class in TokenSDK
- 9. Creating Tokens : Evolvable Token public class MyEvolvableToken extends EvolvableTokenType { private final UniqueIdentifier linearId; <- EvolvableTokenType State is a LinearState private final List<Party> maintainers; <- Maintainers of the token private final int fractionDigits; <- The number of fractional digits allowable for this token type. //Build a wrapper for the tokenType state TransactionState<MyEvolvableToken> transactionState = new TransactionState<>(myEvolvableToken, notary); //Create the token via CreateEvolvableTokens Flow. subFlow(new CreateEvolvableTokens(transactionState));
- 10. Issuing Tokens == Non-Fungible Token Fungible Token +
- 11. Issuing Tokens
- 12. Issuing Tokens IssuedTokenType Holder: Party NonFungibleToken IssuedTokenType Amount Holder: Party FungibleToken Issuer : Party TokenType IssuedTokenType
- 13. Issuing Tokens IssuedTokenType issuedHouseToken = new IssuedTokenType(issuer, houseState.toPointer(HouseState.class)); /* Create an instance of the non-fungible house token with the owner as the token holder. The last paramter is a hash of the jar containing the TokenType, use the helper function to fetch it. */ NonFungibleToken houseToken = new NonFungibleToken(issuedHouseToken, owner, UniqueIdentifier.Companion.fromString(UUID.randomUUID().toString()), TransactionUtilitiesKt.getAttachmentIdForGenericParam(houseState.toPointer(HouseState.class))); /* Issue the house token by calling the IssueTokens flow provided with the TokenSDK */ subFlow(new IssueTokens(Arrays.asList(houseToken)));
- 14. Move & Redeem Tokens MoveFungibleTokens MoveFungibleTokensHandler MoveNonFungibleTokens MoveNonFungibleTokensHandler RedeemFungibleTokens RedeemFungibleTokensHandler RedeemNonFungibleTokens RedeemNonFungibleTokensHandler Update Evolvable Token UpdateEvolvableToken UpdateEvolvableTokenHandler
- 15. Thank You Learn | Develop | Connect
Editor's Notes
- #3: A token is simply a digital representation of a real world asset. On a blockchain it enables the full trust to be stored on the ledger.