Blocks
Blocks are added every eight seconds to the blockchain by a Delegate Node. Due to network/technical errors, a Delegate might miss a block. The time between two blocks is then 16 seconds, as the round continues to the next Delegate.
All state changes to the blockchain are in the form of blocks; they contain a set of transactions and metadata. A block is rejected if one or more of the transactions is invalid; or if the metadata is invalid. Thus a block returned from the Public API is always valid.
Endpoints
List All Blocks
The Public API may be used to query for blocks. This dataset contains millions of blocks; thus for analytical purposes, we recommend you query the database directly.
Endpoint
GET
Query Parameters
| Name | Description | Required | Example |
|---|---|---|---|
| page |
The number of the page that will be returned.
|
No | 1 |
| limit |
The number of resources per page.
|
No | 100 |
| offset |
The number of resources to be skipped.
|
No | |
| transform |
The structure of response to be retrieved.
|
No | |
| orderBy |
The column and order by which the resources will be sorted.
|
No | |
| id |
The identifier of the block to be retrieved.
|
No | |
| height |
The height of the block to be retrieved.
|
No | |
| height.from |
The height from which blocks will be retrieved.
|
No | |
| height.to |
The height to which blocks will be retrieved.
|
No | |
| timestamp |
The timestamp of the block to be retrieved.
|
No | |
| timestamp.from |
The timestamp from which blocks will be retrieved.
|
No | |
| timestamp.to |
The timestamp to which blocks will be retrieved.
|
No |
| Name | page |
| Description |
The number of the page that will be returned.
|
| Required | No |
| Example | 1 |
| Name | limit |
| Description |
The number of resources per page.
|
| Required | No |
| Example | 100 |
| Name | offset |
| Description |
The number of resources to be skipped.
|
| Required | No |
| Example |
| Name | transform |
| Description |
The structure of response to be retrieved.
|
| Required | No |
| Example |
| Name | orderBy |
| Description |
The column and order by which the resources will be sorted.
|
| Required | No |
| Example |
| Name | id |
| Description |
The identifier of the block to be retrieved.
|
| Required | No |
| Example |
| Name | height |
| Description |
The height of the block to be retrieved.
|
| Required | No |
| Example |
| Name | height.from |
| Description |
The height from which blocks will be retrieved.
|
| Required | No |
| Example |
| Name | height.to |
| Description |
The height to which blocks will be retrieved.
|
| Required | No |
| Example |
| Name | timestamp |
| Description |
The timestamp of the block to be retrieved.
|
| Required | No |
| Example |
| Name | timestamp.from |
| Description |
The timestamp from which blocks will be retrieved.
|
| Required | No |
| Example |
| Name | timestamp.to |
| Description |
The timestamp to which blocks will be retrieved.
|
| Required | No |
| Example |
Retrieve first block
Retrieve first block.
Endpoint
GET
Query Parameters
| Name | Description | Required | Example |
|---|---|---|---|
| transform |
The structure of response to be retrieved.
|
No |
| Name | transform |
| Description |
The structure of response to be retrieved.
|
| Required | No |
| Example |
Retrieve last block
Retrieve last block.
Endpoint
GET
Query Parameters
| Name | Description | Required | Example |
|---|---|---|---|
| transform |
The structure of response to be retrieved.
|
No |
| Name | transform |
| Description |
The structure of response to be retrieved.
|
| Required | No |
| Example |
Retrieve a block
Blocks may be retrieved by ID or by height. The height is an incremental integer.
Endpoint
GET
Path Parameters
| Name | Description | Required | Example |
|---|---|---|---|
| id |
The identifier of the block to be retrieved.
|
No | |
| height |
The height of the block to be retrieved.
|
No |
| Name | id |
| Description |
The identifier of the block to be retrieved.
|
| Required | No |
| Example |
| Name | height |
| Description |
The height of the block to be retrieved.
|
| Required | No |
| Example |
Query Parameters
| Name | Description | Required | Example |
|---|---|---|---|
| transform |
The structure of response to be retrieved.
|
No |
| Name | transform |
| Description |
The structure of response to be retrieved.
|
| Required | No |
| Example |
List All Transactions in a Block
Instead of deserializing the block’s payload; you can also obtain the transactions of each block as proper transaction objects directly.
Endpoint
GET
Path Parameters
| Name | Description | Required | Example |
|---|---|---|---|
| blockId |
The identifier of the block to be retrieved.
|
No | |
| height |
The height of the block to be retrieved.
|
No |
| Name | blockId |
| Description |
The identifier of the block to be retrieved.
|
| Required | No |
| Example |
| Name | height |
| Description |
The height of the block to be retrieved.
|
| Required | No |
| Example |
Query Parameters
| Name | Description | Required | Example |
|---|---|---|---|
| page |
The number of the page that will be returned.
|
No | 1 |
| limit |
The number of resources per page.
|
No | 100 |
| offset |
The number of resources to be skipped.
|
No | |
| transform |
The structure of response to be retrieved.
|
No | |
| orderBy |
The column and order by which the resources will be sorted.
|
No | |
| id |
The identifier of the transaction to be retrieved.
|
No | |
| senderPublicKey |
The sender public key of the transactions to be retrieved.
|
No | |
| recipientId |
The recipient address of the transactions to be retrieved.
|
No | |
| vendorField |
The vendor field of the transactions to be retrieved.
|
No |
| Name | page |
| Description |
The number of the page that will be returned.
|
| Required | No |
| Example | 1 |
| Name | limit |
| Description |
The number of resources per page.
|
| Required | No |
| Example | 100 |
| Name | offset |
| Description |
The number of resources to be skipped.
|
| Required | No |
| Example |
| Name | transform |
| Description |
The structure of response to be retrieved.
|
| Required | No |
| Example |
| Name | orderBy |
| Description |
The column and order by which the resources will be sorted.
|
| Required | No |
| Example |
| Name | id |
| Description |
The identifier of the transaction to be retrieved.
|
| Required | No |
| Example |
| Name | senderPublicKey |
| Description |
The sender public key of the transactions to be retrieved.
|
| Required | No |
| Example |
| Name | recipientId |
| Description |
The recipient address of the transactions to be retrieved.
|
| Required | No |
| Example |
| Name | vendorField |
| Description |
The vendor field of the transactions to be retrieved.
|
| Required | No |
| Example |
Last updated 2 years ago
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