GetLatestBlockHeader Access API Method

Parameters

IsSealed

boolean

REQUIRED

It specifies whether the block should be sealed or unsealed. If set to true, the method retrieves the latest sealed block header; if set to false, it retrieves the latest unsealed block header

Returns

block

object

An object which contains the information about the block with the following fields

id

string

The unique identifier of the block

parent_id

string

he identifier of the parent block

height

integer

The height of the blocks

timestamp

object

The details of the timestamp, containing the following properties:

seconds

integer

The number of seconds in the timestamp

nanos

integer

The number of nanoseconds in the timestamp

payload_hash

string

The hash of the block's payload

view

integer

The view number associated with the block

parent_voter_ids

string

A list of voter IDs associated with the parent block

parent_voter_sig_data

string

The signature data associated with the parent voter IDs

proposer_id

string

The ID of the block's proposer

proposer_sig_data

string

The signature data associated with the block's proposer

chain_id

string

The ID of the blockchain

parent_voter_indices

string

The indices of the parent block's voters

Request

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package main
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import (
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	"context"
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	"fmt"
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	"log"
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	"github.com/onflow/flow/protobuf/go/flow/access"
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)
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func main() {
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	// Requires authenticating before making the request. Refer to Intro Page on how Authentication can be done.
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	client, err := getAccessClientWithBasicAuth("ENDPOINT-NAME", "TOKEN_GOES_HERE")
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	ctx := context.Background()
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	if err != null {
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		log.Fatalf("err: %v", err)
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	}
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	// Get Latest (sealed) blockHeader
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	headerResp, err := client.GetLatestBlockHeader(ctx, &access.GetLatestBlockHeaderRequest{IsSealed: true})
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	if err != null {
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		log.Fatal("get latest block header failed: ", err)
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	}
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	fmt.Printf("Latest Block Header ID: %x \n", headerResp.Block.Id)
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}

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