Cardano
Haskell

Getting started with Rosetta

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The Rosetta API is made up of two core components; the Data API and the Construction API. Together, these APIs allow you to read and write to blockchains in a common format over a standard communication protocol. The specifications for these APIs can be found in the rosetta-specifications repository.

For full details, read the Rosetta API specification. For an overview of the interactions, view the Flow of Operations.

Here you will find developer examples, exchange examples, and the Rosetta API calls.

Developer Examples

This section outlines some examples that you can test out as a developer who wants to use Rosetta. However, we advise that you should exercise caution if testing these on mainnet.

Sample code for the typical Rosetta use cases:

Postman examples

This Postman Collection demonstrates how to query account balance, construct a multi-asset transaction, sign the transaction, and submit it. This scenario is tested nightly to ensure correctness. You simply import into Postman to get started.

Exchange Examples

This section provides some endpoint examples of how exchanges can use Rosetta for their integration needs:

  • Get address from public key
  • Determine transaction size
  • Get any information required to construct a transaction for a specific network
  • Create unsigned transaction
  • Confirm correctness of unsigned tx body
  • Create the signed transaction
  • Generate the transaction hash
  • Submit signed transaction to the blockchain

Get address from public key

/construction/derive

Request:

{
    "network_identifier": {
        "blockchain": "cardano",
        "network": "testnet"
    },
    "public_key": {
        "hex_bytes": "22ae46272bffe077cecc46e1494d790d4ad453ae1c4228aa0c2e9671dcb16341",
        "curve_type": "edwards25519"
    },
    "metadata": {}
}

Response:

{
    "address": 
    "addr_test1vzx9ztw59gzp7txrhs4z03u2sfzx8y49vxn3vchzasplx3cwph08p"
}

Determine transaction size

/construction/preprocess

Request:

{
    "network_identifier": {
        "blockchain": "cardano",
        "network": "testnet"
    },
    "operations": [
        {
            "operation_identifier": {
                "index": 0
            },
            "type": "input",
            "status": "",
            "account": {
                "address": "addr_test1vzx9ztw59gzp7txrhs4z03u2sfzx8y49vxn3vchzasplx3cwph08p"
            },
            "amount": {
                "value": "-999968487129",
                "currency": {
                    "symbol": "ADA",
                    "decimals": 6
                }
            },
            "coin_change": {
                "coin_identifier": {
                    "identifier": "8f0e1bb31ff09a8dcc8a1b13d6ccb8f873f8d94b17bb7236c62e2d9d63d5426b:0"
                },
                "coin_action": "coin_spent"
            },
            "metadata": {
                "tokenBundle": [
                    {
                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6",
                        "tokens": [
                            {
                                "value": "1",
                                "currency": {
                                    "symbol": "31",
                                    "decimals": 0,
                                    "metadata": {
                                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6"
                                    }
                                }
                            },
                            {
                                "value": "1",
                                "currency": {
                                    "symbol": "32",
                                    "decimals": 0,
                                    "metadata": {
                                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6"
                                    }
                                }
                            }
                        ]
                    }
                ]
            }
        },
        {
            "operation_identifier": {
                "index": 1
            },
            "type": "output",
            "status": "",
            "account": {
                "address": "addr_test1vrpxrjmr5rk43ace43g2hnmxzguegns3vpqc8phx7tcu8wsgmynq6"
            },
            "amount": {
                "value": "999968106116",
                "currency": {
                    "symbol": "ADA",
                    "decimals": 6
                }
            },
            "metadata": {
                "tokenBundle": [
                    {
                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6",
                        "tokens": [
                            {
                                "value": "1",
                                "currency": {
                                    "symbol": "31",
                                    "decimals": 0,
                                    "metadata": {
                                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6"
                                    }
                                }
                            },
                            {
                                "value": "1",
                                "currency": {
                                    "symbol": "32",
                                    "decimals": 0,
                                    "metadata": {
                                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6"
                                    }
                                }
                            }
                        ]
                    }
                ]
            }
        }
    ]
}


}

Response:

{
   "options": {
        "relative_ttl": 1000,
        "transaction_size": 235
    }
}

Get any information required to construct a transaction for a specific network

/construction/metadata

Request:

{
    "network_identifier": {
        "blockchain": "cardano",
        "network": "testnet"
    },
    "options": {
        "relative_ttl": 1000,
        "transaction_size": 235
    },
    "public_keys": [
        {
            "hex_bytes": "22ae46272bffe077cecc46e1494d790d4ad453ae1c4228aa0c2e9671dcb16344",
            "curve_type": "edwards25519"
        }
    ]
}

Response:

{
    "metadata": {
        "ttl": "20416653"
    },
    "suggested_fee": [
        {
            "value": "165897",
            "currency": {
                "symbol": "ADA",
                "decimals": 6
            }
        }
    ]
}

Create unsigned transaction

/construction/payloads

Request:

{
    "network_identifier": {
        "blockchain": "cardano",
        "network": "testnet"
    },
    "operations": [
        {
            "operation_identifier": {
                "index": 0
            },
            "type": "input",
            "status": "",
            "account": {
                "address": "addr_test1vzx9ztw59gzp7txrhs4z03u2sfzx8y49vxn3vchzasplx3cwph08p"
            },
            "amount": {
                "value": "-999968487129",
                "currency": {
                    "symbol": "ADA",
                    "decimals": 6
                }
            },
            "coin_change": {
                "coin_identifier": {
                    "identifier": "8f0e1bb31ff09a8dcc8a1b13d6ccb8f873f8d94b17bb7236c62e2d9d63d5426b:0"
                },
                "coin_action": "coin_spent"
            },
            "metadata": {
                "tokenBundle": [
                    {
                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6",
                        "tokens": [
                            {
                                "value": "1",
                                "currency": {
                                    "symbol": "31",
                                    "decimals": 0,
                                    "metadata": {
                                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6"
                                    }
                                }
                            },
                            {
                                "value": "1",
                                "currency": {
                                    "symbol": "32",
                                    "decimals": 0,
                                    "metadata": {
                                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6"
                                    }
                                }
                            }
                        ]
                    }
                ]
            }
        },
        {
            "operation_identifier": {
                "index": 1
            },
            "type": "output",
            "status": "",
            "account": {
                "address": "addr_test1vrpxrjmr5rk43ace43g2hnmxzguegns3vpqc8phx7tcu8wsgmynq6"
            },
            "amount": {
                "value": "999968106116",
                "currency": {
                    "symbol": "ADA",
                    "decimals": 6
                }
            },
            "metadata": {
                "tokenBundle": [
                    {
                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6",
                        "tokens": [
                            {
                                "value": "1",
                                "currency": {
                                    "symbol": "31",
                                    "decimals": 0,
                                    "metadata": {
                                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6"
                                    }
                                }
                            },
                            {
                                "value": "1",
                                "currency": {
                                    "symbol": "32",
                                    "decimals": 0,
                                    "metadata": {
                                        "policyId": "2bbd69730ab71f9c3825aef68d01400fc7c7f8270ed34082528b17a6"
                                    }
                                }
                            }
                        ]
                    }
                ]
            }
        }
    ],
    "metadata": {
        "ttl": "20416653"
    },
    "suggested_fee": [
        {
            "value": "165897",
            "currency": {
                "symbol": "ADA",
                "decimals": 6
            }
        }
    ]
}

Response:

{
    "unsigned_transaction": "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",
    "payloads": [
        {
            "address": "addr_test1vzx9ztw59gzp7txrhs4z03u2sfzx8y49vxn3vchzasplx3cwph08p",
            "hex_bytes": "6dd67acae1ad818eab971f27cc20bd6e030cf9783b32b0052d6d98bb13792b30",
            "signature_type": "ed25519"
        }
    ]
}

Confirm correctness of unsigned tx body

/construction/parse

Request:

{
    "network_identifier": {
        "blockchain": "cardano",
        "network": "testnet"
    },
        "signed": false,
    "transaction": "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"
}

Response:

(Response matches preprocess payload)

Locally sign payloads[0].hex_bytes from previous/payloads response to use in the next request.

Create the signed transaction

/construction/combine

Request:

{
    "network_identifier": {
        "blockchain": "cardano",
        "network": testnet"
    },
        "unsigned_transaction": "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",
        "signatures": [
        {
            "signing_payload": {
                "account_identifier": {
                    "address": "addr_test1vzx9ztw59gzp7txrhs4z03u2sfzx8y49vxn3vchzasplx3cwph08p",
                    "metadata": {}
                },
                "hex_bytes": "6dd67acae1ad818eab971f27cc20bd6e030cf9783b32b0052d6d98bb13792b30",
                "signature_type": "ed25519"
            },
            "public_key": {
                "hex_bytes": "22ae46272bffe077cecc46e1494d790d4ad453ae1c4228aa0c2e9671dcb16341",
                "curve_type": "edwards25519"
            },
            "signature_type": "ed25519",
            "hex_bytes": "c7ba69cc50abce863c4900e55289ea27f473073b58fbd44a310140f3fb20494019f674588a2df9d8b6d454c55643a96e26dee332ef060e5960357f65687dde02"
        }
    ]
}

Response:

{
    "signed_transaction": "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"
}

You can use /construction/parse again to confirm the correctness of signed transaction here if you change signed to true.

Generate the tx hash

/construction/hash

Request:

{
    "network_identifier": {
        "blockchain": "cardano",
        "network": "testnet"
    },
        "signed_transaction": "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"
}

Response

{
    "transaction_identifier": {
        "hash": "6dd67acae1ad818eab971f27cc20bd6e030cf9783b32b0052d6d98bb13792b30"
    }
}

Submit signed transaction to the blockchain

/construction/submit

Request:

{
    "network_identifier": {
        "blockchain": "cardano",
        "network": "testnet"
    },
    "signed_transaction": "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"
}

API Calls

This section outlines the available Rosetta API calls:

Get brief information about transactions

$ curl -X POST '$BASEURL/block' \
  -H "Content-Type: application/json" \
  -d '{ "network_identifier": {"blockchain": "cardano", "network": "mainnet" }, "metadata": {}, "block_identifier": {"index": "5264122" }}'

Get block’s summary information

$ curl -X POST '$BASEURL/block' \
  -H "Content-Type: application/json" \
  -d '{ "network_identifier": {"blockchain": "cardano", "network": "mainnet" }, "metadata": {}, "block_identifier": {"index": "5264122" }}'

Get information about the N latest transactions

# Get the current block identifier
$ curl -X POST '$BASEURL/network/status' \
  -H "Content-Type: application/json" \
  -d '{ "network_identifier": { "blockchain": "cardano", "network": "mainnet" }, "metadata": {} }' | jq .current_block_identifier.index 
5264122


# Fetch information from it
$ curl -X POST '$BASEURL/block' \
  -H "Content-Type: application/json" \
  -d '{ "network_identifier": {"blockchain": "cardano", "network": "mainnet" }, "metadata": {}, "block_identifier": {"index": "5264122" }}'

Get summary information about a transaction

$ curl $BASEURL/api/txs/summary/382a5274ebf102910c6c923a8b11f108e79ecedb5d7433cd0dd15a8a443f0fa5
Get summary information about an address
$ curl -X POST '$BASEURL/account/balance' \
  -H "Content-Type: application/json" \
  -d '{ "network_identifier": { "blockchain": "cardano", "network": "mainnet" }, "metadata": {}, "account_identifier": { "address": "DdzFFzCqrhsqKd92VGNM9Ts1Ms62J2FaSRmf8t1bQa1VugDmcUJzeU8TRFnGDDUR6f1m9VaJJG1GfnzxVjKGBbBAVGT9sPBseREYzP3E" }, "metadata": {}}'

Get address information specific to a block

$ curl -X POST '$BASEURL/account/balance' \
  -H "Content-Type: application/json" \
  -d '{ "network_identifier": { "blockchain": "cardano", "network": "mainnet" }, "metadata": {}, "account_identifier": { "address": "DdzFFzCqrhsqKd92VGNM9Ts1Ms62J2FaSRmf8t1bQa1VugDmcUJzeU8TRFnGDDUR6f1m9VaJJG1GfnzxVjKGBbBAVGT9sPBseREYzP3E" }, "metadata": {}, "block_identifier": {"index": "5264122","hash": "b5426334221805b3c161ec07b02722728ced7b5c38a9cc60962e819620ecbf9a" },"currencies": {"symbol": "ada", "decimals": 8 }}'
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