| [engine](engine) | This contract demonstrates how to use `runtime` interop package which implements an API for `System.Runtime.*` Neo system calls. Please, refer to the `runtime` [package documentation](../pkg/interop/doc.go) for details. |
| [events](events) | The contract shows how execution notifications with the different arguments types can be sent with the help of `runtime.Notify` function of the `runtime` interop package. Please, refer to the `runtime.Notify` [function documentation](../pkg/interop/runtime/runtime.go) for details. |
| [iterator](iterator) | This example describes a way to work with Neo iterators. Please, refer to the `iterator` [package documentation](../pkg/interop/iterator/iterator.go) for details. |
| [nft-d](nft-d) | NEP-11 divisible NFT. This contract implements the NEP-11 and the NEP-24 token standards. See NEP-11 token standard [specification](https://github.com/neo-project/proposals/blob/master/nep-11.mediawiki) and NEP-24 [specification](https://github.com/neo-project/proposals/blob/master/nep-24.mediawiki) for details. |
| [nft-nd](nft-nd) | NEP-11 non-divisible NFT. This contract implements the NEP-11 and the NEP-24 token standards. See NEP-11 token standard [specification](https://github.com/neo-project/proposals/blob/master/nep-11.mediawiki) and NEP-24 [specification](https://github.com/neo-project/proposals/blob/master/nep-24.mediawiki) for details. |
| [nft-nd-nns](nft-nd-nns) | Neo Name Service contract which is NEP-11 non-divisible NFT. The contract implements methods for Neo domain name system managing such as domains registration/transferring, records addition and names resolving. The package also contains tests implemented with [neotest](https://pkg.go.dev/github.com/nspcc-dev/neo-go/pkg/neotest). |
| [oracle](oracle) | Oracle demo contract exposing two methods that you can use to process URLs. It uses oracle native contract, see [interop package documentation](../pkg/interop/native/oracle/oracle.go) also. |
| [runtime](runtime) | This contract demonstrates how to use special `_initialize` and `_deploy` methods. See the [compiler documentation](../docs/compiler.md#vm-api-interop-layer ) for methods details. It also shows the pattern for checking owner witness inside the contract with the help of `runtime.CheckWitness` interop [function](../pkg/interop/runtime/runtime.go). |
| [storage](storage) | The contract implements API for basic operations with a contract storage. It shows how to use `storage` interop package. See the `storage` [package documentation](../pkg/interop/storage/storage.go). |
| [timer](timer) | The idea of the contract is to count `tick` method invocations and destroy itself after the third invocation. It shows how to use `contract.Call` interop function to call, update (migrate) and destroy the contract. Please, refer to the `contract.Call` [function documentation](../pkg/interop/contract/contract.go) |
| [token](token) | This contract implements NEP-17 token standard (like NEO and GAS tokens) with all required methods and operations. See the NEP-17 token standard [specification](https://github.com/neo-project/proposals/pull/126) for details. |
| [zkp/cubic_circuit](zkp/cubic_circuit) | This example demonstrates how to create your own circuit and generate Groth-16 proof based on BLS12-381 elliptic curve points with the help of [consensys/gnark](https://pkg.go.dev/github.com/consensys/gnark). It also shows how to generate, deploy and invoke Verifier smart contract to verify proofs for the given circuit on the Neo chain with the help of [zkpbindings](https://pkg.go.dev/github.com/nspcc-dev/neo-go/pkg/smartcontract/zkpbinding) NeoGo package. The package also contains circuit tests implemented with [gnark/test](https://pkg.go.dev/github.com/consensys/gnark/test) to check the circuit validity and end-to-end proof generation/verification test implemented with [neotest](https://pkg.go.dev/github.com/nspcc-dev/neo-go/pkg/neotest) to demonstrate how to build, deploy and verify proofs via Verifier smart contract for the given circuit. |