zkApp reference, endpoints, and links.
Mina has only two native transaction types: User Transactions and Internal Commands. Programmability and custom logic are achieved through zkApps - smart contracts based on zk-proof technology that are deployed off-chain. Effectively, a zkApp is equivalent to a dApp on Mina. For each zkApp, there's an on-chain representation in the form of a zkApp account.
zkApp transactions run through zkApp accounts which can also mint custom tokens. Each zkApp account has a set of account updates - fields that define how transactions run on-chain and how accounts are updated - permissions defining authorization configs for users to run a zkApp transaction, and preconditions - account and network conditions required for a zkApp transaction to run. Each zkApp account has 8 Account Update fields. When a zkApp transaction runs, these fields change, which results in the change of the zkApp account and the Mina blockchain at large.
Minascan shows a list of zkApp accounts and zkApp transactions.
The following endpoints are available for zkApps on Blockberry.
| Endpoint | Description |
|---|---|
| getZkAppTransactionByAccountAddress | ZkApp transactions are transactions run via zkApps - equivalents to dApps on Mina that are based on the zero-knowledge proof technology. |
| getZkAppTransactionsByBlockStateHash | Get a list of all zkApp transactions contained in the queried block. |
| getZkAppTransactions | Get a list of all zkApp transactions on the Mina Blockchain. |
| getZkAppTransactionBalanceChangeByTxHash | Get the account balance change brought about by the queried zkApp transaction. |
| getZkAppTxRawDataByHash | Get details of the queried zkApp transaction in a raw JSON format by hash. |
| getZkAppTransactionByTxHash | Get the queried zkAPpp transaction by hash. |
| getZkAppByAddress | Get the queried zkApp by the address of its creator. |
| getLastVerificationKeyChange | Check when the queried account changed the verification key last time. Verification key change may be, although not necessarily, an indication of scam activity. |
| getVerificationKeyHistory | Check when the queried zkApp account changed the verification key. |