Transactions

List Transactions
get
https://nchain.provide.services
/api/v1/transactions
List Transactions
curl
Response JSON
curl -i \
     -H 'authorization: bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJkYXRhIjp7fSwiZXhwIjpudWxsLCJpYXQiOjE1NTk4Nzg1NzQsImp0aSI6IjYzYTJkY2QzLWI5OTgtNDZjNC1hNzFkLTQ5MjU4YTBhYmEyMyIsInN1YiI6ImFwcGxpY2F0aW9uOmNiMjAzN2Y3LTc5ZmMtNDBmNC05NzIwLWFkYTYzNmRhNDE4MyJ9.0LsVj7oTF0KjwbcUhg9a-fQRWB7cGzKJxLIANeX2cWE' \
     https://nchain.provide.services/api/v1/transactions
HTTP/2 200
date: Sun, 10 Jun 2019 03:50:04 GMT
content-type: application/json; charset=UTF-8
access-control-allow-credentials: true
access-control-allow-headers: Accept, Accept-Encoding, Authorization, Cache-Control, Content-Length, Content-Type, Origin, User-Agent, X-CSRF-Token, X-Requested-With
access-control-allow-methods: GET, POST, PUT, DELETE, OPTIONS
access-control-allow-origin: *
access-control-expose-headers: X-Total-Results-Count
x-total-results-count: 3
[
    {
        "id":"16d68eb5-cf7c-4018-b37b-8bbdc314c7dd",
        "created_at":"2019-06-10T00:30:13.180849-04:00",
        "application_id":"bca2348c-442f-4c48-99a4-7b3510385e53",
        "user_id":null,
        "network_id":"ef976635-545b-46c6-9576-4e3a893a68e9",
        "account_id":"e6ef498b-589e-4514-9924-278b7bd6e3de",
        "to":"0x4e50F385407c8bd202F6A8664258F31701a5543d",
        "value":0,
        "data":"0x72ac022b00000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000016000000000000000000000000000000000000000000000000000000000000001a000000000000000000000000000000000000000000000000000000000000001e00000000000000000000000000000000000000000000000000000000000000220000000000000000000000000000000000000000000000000000000000000026000000000000000000000000000000000000000000000000000000000000000046173646600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000461736466000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004617364660000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000046173646600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000461736466000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004617364660000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000046173646600000000000000000000000000000000000000000000000000000000",
        "hash":"0xf14dfa7fc72197efaf385cb3fae6d12693f9195d96c26c0a773721c3cbd86fd1",
        "status":"success",
        "params":null,
        "traces":null,
        "ref":"42202975-aada-4f31-b811-9203ee9d0d25",
        "description":null,
        "block":6977,
        "block_timestamp":"2019-06-10T00:30:20-04:00",
        "broadcast_at":"2019-06-10T00:30:13.264201-04:00",
        "finalized_at":"2019-06-10T00:30:24.150262-04:00",
        "published_at":"2019-06-10T00:30:12.769587-04:00",
        "queue_latency":494,
        "network_latency":10886,
        "e2e_latency":11380
    },
    {
        "id":"71924d07-8d90-456e-9eef-28e259d0951e",
        "created_at":"2019-06-10T00:14:36.271225-04:00",
        "application_id":"bca2348c-442f-4c48-99a4-7b3510385e53",
        "user_id":null,
        "network_id":"ef976635-545b-46c6-9576-4e3a893a68e9",
        "account_id":"e6ef498b-589e-4514-9924-278b7bd6e3de",
        "to":"0x4e50F385407c8bd202F6A8664258F31701a5543d",
        "value":0,
        "data":"0x72ac022b00000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000016000000000000000000000000000000000000000000000000000000000000001a000000000000000000000000000000000000000000000000000000000000001e000000000000000000000000000000000000000000000000000000000000002200000000000000000000000000000000000000000000000000000000000000260000000000000000000000000000000000000000000000000000000000000000b3132332d3435362d3738390000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011736f6d652e72616e646f6d2e746f706963000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000b3938372d3635342d333231000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d64656661756c742e746f706963000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003322e3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003424f4c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000027b7d000000000000000000000000000000000000000000000000000000000000",
        "hash":"0x0c1fc5d8f2d07cbc6fb7ac5c4700c1c1d3a22549b209c173b6e8b9472e21c188",
        "status":"pending",
        "params":null,
        "traces":null,
        "ref":"d6562b9f-fe2d-4405-a1ae-fdb316cf94ee",
        "description":null,
        "block":null,
        "block_timestamp":null,
        "broadcast_at":"2019-06-10T00:14:36.356977-04:00",
        "finalized_at":null,
        "published_at":"2019-06-10T00:14:35.764088-04:00",
        "queue_latency":null,
        "network_latency":null,
        "e2e_latency":null
    }
]
Retrieve a list of transactions scoped to the authorized User or Application.
Query Parameters
Parameter
Description
Default
filter_contract_creations
when true, contract creation transactions are filtered
false
status
comma-delimited list of statuses by which the transactions response is filtered
n/a
network_id
id of the Network where the transaction was broadcast
n/a
account_id
id of the Account which signed the transaction
n/a
from
network address of the sender of the transaction (corresponds to the Account address)
n/a
to
network address of the recipient of the transaction
n/a
Create & Broadcast Transaction
Create and broadcast a transaction in a chain- and protocol-agnostic manner.
post
https://nchain.provide.services
/api/v1/transactions
Create Transaction
curl
Response JSON
curl -i \
     -H 'authorization: bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJkYXRhIjp7fSwiZXhwIjpudWxsLCJpYXQiOjE1NTk4Nzg1NzQsImp0aSI6IjYzYTJkY2QzLWI5OTgtNDZjNC1hNzFkLTQ5MjU4YTBhYmEyMyIsInN1YiI6ImFwcGxpY2F0aW9uOmNiMjAzN2Y3LTc5ZmMtNDBmNC05NzIwLWFkYTYzNmRhNDE4MyJ9.0LsVj7oTF0KjwbcUhg9a-fQRWB7cGzKJxLIANeX2cWE' \
     -H 'content-type: application/json' \
     https://nchain.provide.services/api/v1/transactions \
     -d '{"account_id": "network_id": "ef976635-545b-46c6-9576-4e3a893a68e9", "key_id": "e6ef498b-589e-4514-9924-278b7bd6e3de", "to": "0xc04B5fc7c8D7d63d1b1c24dfA92a59e74859055C", "value": 0}'
HTTP/2 201
{
    "id": "378a6325-09c8-4193-b21e-8e79def72c3a",
    "created_at": "2019-06-10T03:01:17.481489-04:00",
    "application_id": "bca2348c-442f-4c48-99a4-7b3510385e53",
    "network_id": "ef976635-545b-46c6-9576-4e3a893a68e9",
    "key_id": "e6ef498b-589e-4514-9924-278b7bd6e3de",
    "to": "0xc04B5fc7c8D7d63d1b1c24dfA92a59e74859055C",
    "value": 0,
    "data": null,
    "hash": "0x0e52ca13f4939f2cd4fcd5fa26d963a3f58ebca7434bd8afe50c4126f0d3476e",
    "status": "pending",
    "params": null,
    "traces": null,
    "ref": null,
    "description": null,
    "block": null,
    "block_timestamp": null,
    "broadcast_at": "2019-06-10T03:01:17.562293-04:00",
    "finalized_at": null,
    "published_at": null,
    "queue_latency": null,
    "network_latency": null,
    "e2e_latency": null
}
This API provides an asynchronous, fault-tolerant mechanism for providing some guarantees about how a well-formed transaction will become eventually-consistent with the underlying target Network. Currently, transactions are guaranteed to be successfully broadcast to the target network or timeout within 5 minutes. If a transaction is unable to be broadcast to the network for any reason (i.e., network reachability, invalid nonce etc.) it is retried every 60 seconds. It is likely these retry and timeout constraints will be made more configurable in a future release.
In addition to the asynchronous and resilient nature of broadcasting transactions using this API, instrumentation of the full transaction lifecycle is captured for each transaction. This currently includes the following metrics:
Metric
Description
broadcast_at
timestamp indicating when the transaction was broadcast to the network
finalized_at
timestamp indicating when the transaction was included in a block
published_at
timestamp indicating when the transaction was published for async processing
queue_latency
amount of time, in milliseconds, the transaction was queued for async processing
network_latency
amount of time, in milliseconds, the transaction was pending inclusion in a block
e2e_latency
amount of time, in milliseconds, of the full transaction lifecycle
The following request illustrates how to create a new Transaction for broadcast to an Ethereum-based blockchain:
A few modes of operation exist in the context of a request to the create/broadcast transaction API, specifically related to how signing is handled. A transaction is considered to be either self-custody or managed and each mode supports pre-signed transactions.
Signing
Behavior
Self-Custody
the API assumes you are running Provide infrastructure and are either (i) in custody of your own private keys and using them within NChain directly to sign transactions, (ii) using the API as a fault-tolerant gateway to broadcast pre-signed transactions or (iii) configuring NChain to delegate the signing of transactions to the Vault service
Managed
the API will forward your transaction to the Managed Transactions API for broadcast
The parameters provided to the API in each create/broadcast transaction request determine how the API handles the signing and attempted broadcast of the transaction (i.e., whether the transaction is self-custody or managed).
Self-Custody Request Parameters
Parameter
Description
account_id
DEPRECATED id of the signing Account
data
unsigned transaction data to broadcast
key_id
id of the Vault Key which will be used to sign the Transaction; required in the absence of a signer
network_id
id of the Network on which the Transaction will be broadcast
params
arbitrary optional parameters provided for constructing and broadcasting a valid Transaction for the target Network; useful for setting gas, gas_price and subsidize, for example, in the case of an EVM-based Transaction
signer
public network address associated with the private key which signed the given data, provided data is signed externally; if unsigned data is provided, the given signer is assumed to represent an Account or Wallet that can be resolved to a Vault Key, which is then used to sign the given data
to
public network address of the recipient of the Transaction, if applicable
value
total amount of value, represented in the smallest standard denomination of native currency for the target Network (i.e., wei), to be transferred by the sender to the recipient
Including both a key_id and signer as part of a create/broadcast request will result in a 400 Bad Request.
Optional Parameters
The following are supported as optional params of a self-custody create/broadcast transaction request:
Parameter
Description
gas
maximum gas to be spent on the Transaction
gas_price
price per unit of gas, specified in units customary to the target Network
nonce
nonce to be used for the Transaction
If gas is not provided, it will be estimated for the contemplated transaction execution and set automatically. This will be sufficient for most transactions, but including gas with your request is considered a best-practice. If gas_price is not provided, an appropriate Gas Price Oracle will be used to calculate the gas price to be offered to the network. If a nonce is not provided, the next nonce for the signing account is resolved automatically using the blockchain and mempool, which will be sufficient for most transactions.
Managed Request Parameters
Parameter
Description
data
signed or unsigned transaction data to broadcast
network_id
id of the Network on which the Transaction will be broadcast
params
arbitrary optional parameters to enable faster finality or indicate a subsidy should be used
tx_provider
supported Managed Transactions provider
value
total amount of value, represented in the smallest standard denomination of native currency for the target Network (i.e., wei), to be transferred by the sender to the recipient
The tx_provider parameter causes the API to attempt to broadcast the new transaction using the Managed Transaction API. If the given tx_provider is valid and your account is eligible to use the service, value + gas are paid on your behalf and billed in arrears.
Optional Parameters
The following are supported as optional params of a managed create/broadcast transaction request:
Parameter
Description
priority
either normal (the default) or expedited documentation forthcoming
subsidize
public network address or id of the Vault Key to subsidize​
The subsidize parameter is highly experimental at this time. Additional documentation about how to use this feature of the Managed Transactions API will be included here when it becomes available.
⚠️Documentation for broadcasting pre-signed transactions will be included here in the near future.
Managed Transactions API
​Provide Payments has developed a Managed Transactions API, to facilitate enterprise adoption of public blockchain applications and protocols via traditional enterprise procurement processes (i.e., no cryptocurrency or tokens ever need to be acquired by users). Support for paying network transaction fees (i.e., gas) has been enabled on an experimental basis when using the create/broadcast transaction API (see the tx_provider and optional subsidize).
Note that only certain Ethereum-based testnets are currently supported. A full list of supported networks and professional custody providers can be found here.
Retrieve Transaction Details
get
https://nchain.provide.services
/api/v1/transactions/:id
Get Transaction Details
curl
Response JSON
curl -i \
     -H 'authorization: bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJkYXRhIjp7fSwiZXhwIjpudWxsLCJpYXQiOjE1NTk4Nzg1NzQsImp0aSI6IjYzYTJkY2QzLWI5OTgtNDZjNC1hNzFkLTQ5MjU4YTBhYmEyMyIsInN1YiI6ImFwcGxpY2F0aW9uOmNiMjAzN2Y3LTc5ZmMtNDBmNC05NzIwLWFkYTYzNmRhNDE4MyJ9.0LsVj7oTF0KjwbcUhg9a-fQRWB7cGzKJxLIANeX2cWE' \
     https://nchain.provide.services/api/v1/transactions/6e401894-f091-4481-b978-e2a45eca0fd1
HTTP/2 200
date: Sun, 10 Jun 2019 04:52:30 GMT
content-type: application/json; charset=UTF-8
access-control-allow-credentials: true
access-control-allow-headers: Accept, Accept-Encoding, Authorization, Cache-Control, Content-Length, Content-Type, Origin, User-Agent, X-CSRF-Token, X-Requested-With
access-control-allow-methods: GET, POST, PUT, DELETE, OPTIONS
access-control-allow-origin: *
access-control-expose-headers: X-Total-Results-Count
{
    "id": "6e401894-f091-4481-b978-e2a45eca0fd1",
    "created_at": "2019-06-09T23:48:31.051496-04:00",
    "application_id": "bca2348c-442f-4c48-99a4-7b3510385e53",
    "user_id": null,
    "network_id": "ef976635-545b-46c6-9576-4e3a893a68e9",
    "account_id": "e6ef498b-589e-4514-9924-278b7bd6e3de",
    "to": null,
    "value": 0,
    "data": 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                    "gasUsed": "0x13edb6",
                    "output": null
                },
                "error": null,
                "subtraces": 0,
                "traceAddress": [],
                "transactionHash": "0xeedba20a12f0f34e41568895b3ff4e0b31387ce8c2a00de017800bc14dd37d05",
                "transactionPosition": 0,
                "type": "create"
            }
        ]
    },
    "ref": null,
    "description": null,
    "block": 6477,
    "block_timestamp": "2019-06-09T23:48:35-04:00",
    "broadcast_at": "2019-06-09T23:48:31.168685-04:00",
    "finalized_at": "2019-06-09T23:48:39.575262-04:00",
    "published_at": "2019-06-09T23:48:28.194784-04:00",
    "queue_latency": 2973,
    "network_latency": 8406,
    "e2e_latency": 11380
}
Fetch details about a specific transaction. When available, this API returns VM tracing details.
URL Parameters
Parameter
Description
id
id of the Transaction
Parameter	Description	Default
filter_contract_creations	when `true`, contract creation transactions are filtered	`false`
status	comma-delimited list of statuses by which the transactions response is filtered	n/a
network_id	id of the `Network` where the transaction was broadcast	n/a
account_id	id of the `Account` which signed the transaction	n/a
from	network address of the sender of the transaction (corresponds to the `Account` address)	n/a
to	network address of the recipient of the transaction	n/a
Metric	Description
`broadcast_at`	timestamp indicating when the transaction was broadcast to the network
`finalized_at`	timestamp indicating when the transaction was included in a block
`published_at`	timestamp indicating when the transaction was published for async processing
`queue_latency`	amount of time, in milliseconds, the transaction was queued for async processing
`network_latency`	amount of time, in milliseconds, the transaction was pending inclusion in a block
`e2e_latency`	amount of time, in milliseconds, of the full transaction lifecycle
Signing	Behavior
Self-Custody	the API assumes you are running Provide infrastructure and are either (i) in custody of your own private keys and using them within NChain directly to sign transactions, (ii) using the API as a fault-tolerant gateway to broadcast pre-signed transactions or (iii) configuring NChain to delegate the signing of transactions to the Vault service
Managed	the API will forward your transaction to the Managed Transactions API for broadcast
Parameter	Description
account_id	DEPRECATED id of the signing `Account`
data	unsigned transaction data to broadcast
key_id	id of the Vault Key which will be used to sign the `Transaction`; required in the absence of a `signer`
network_id	id of the `Network` on which the `Transaction` will be broadcast
params	arbitrary optional parameters provided for constructing and broadcasting a valid `Transaction` for the target `Network`; useful for setting `gas`, `gas_price` and `subsidize`, for example, in the case of an EVM-based `Transaction`
signer	public network address associated with the private key which signed the given `data`, provided `data` is signed externally; if unsigned `data` is provided, the given `signer` is assumed to represent an `Account` or `Wallet` that can be resolved to a Vault Key, which is then used to sign the given `data`
to	public network address of the recipient of the `Transaction`, if applicable
value	total amount of value, represented in the smallest standard denomination of native currency for the target `Network` (i.e., wei), to be transferred by the sender to the recipient
Parameter	Description
gas	maximum gas to be spent on the `Transaction`
gas_price	price per unit of `gas`, specified in units customary to the target `Network`
nonce	nonce to be used for the `Transaction`
Parameter	Description
data	signed or unsigned transaction data to broadcast
network_id	id of the `Network` on which the `Transaction` will be broadcast
params	arbitrary optional parameters to enable faster finality or indicate a subsidy should be used
tx_provider	supported Managed Transactions provider
value	total amount of value, represented in the smallest standard denomination of native currency for the target `Network` (i.e., wei), to be transferred by the sender to the recipient
Parameter	Description
priority	either `normal` (the default) or `expedited` documentation forthcoming
subsidize	public network address or id of the Vault Key to subsidize
Parameter	Description
id	id of the `Transaction`
Tokenization
Wallets
Last modified 1yr ago