isBlockhashValid gRPC Method - Solana gRPC

Solana gRPC is included with Scale and Business plans. On Build and Accelerate plans, it remains available via the Solana gRPC add-on.

Parameters

blockhash

bytes

REQUIRED

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Returns

valid

boolean

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slot

string

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Request

1
package main
2

3
import (
4
	"context"
5
	"crypto/tls"
6
	"fmt"
7
	"log"
8
	"time"
9

10
	pb "yellowstone/proto"
11

12

13
	"google.golang.org/grpc"
14
	"google.golang.org/grpc/credentials"
15
	"google.golang.org/grpc/encoding/gzip"
16
	"google.golang.org/grpc/keepalive"
17
)
18

19
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
20
// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
21
// endpoint will be: docs-demo.solana-mainnet.quiknode.pro:10000  {10000 is the port number for gRPC}
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// token will be : abcde123456789
23

24
var (
25
	endpoint = "YOUR_QN_ENDPOINT:10000"
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	token    = "YOUR_TOKEN_NUMBER"
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)
28

29
func main() {
30
	opts := []grpc.DialOption{
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		grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})),
32
		grpc.WithKeepaliveParams(kacp),
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		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(1024*1024*1024), grpc.UseCompressor(gzip.Name)),
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		grpc.WithPerRPCCredentials(tokenAuth{token: token}),
35
	}
36

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	conn, err := grpc.NewClient(endpoint, opts...)
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	if err != nil {
39
		log.Fatalf("Failed to connect: %v", err)
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	}
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	defer conn.Close()
42

43
	client := pb.NewGeyserClient(conn)
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    ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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    defer cancel()
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    const BLOCKHASH_TO_CHECK = "FJcV9hJycVRkyHWf3P8qjxE2vLs6dF38RTZzZBNvNM1z"
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	isBlockhashValid, err := client.IsBlockhashValid(ctx, &pb.IsBlockhashValidRequest{
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		Blockhash: BLOCKHASH_TO_CHECK,
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	})
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	if err != nil {
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		log.Fatalf("Failed to check blockhash validity: %v", err)
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	}
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57

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	fmt.Printf("Slot: %d\n", isBlockhashValid.Slot)
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	fmt.Printf("Valid: %v\n", isBlockhashValid.Valid)
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61

62
}

1
package main
2

3
import (
4
	"context"
5
	"crypto/tls"
6
	"fmt"
7
	"log"
8
	"time"
9

10
	pb "yellowstone/proto"
11

12

13
	"google.golang.org/grpc"
14
	"google.golang.org/grpc/credentials"
15
	"google.golang.org/grpc/encoding/gzip"
16
	"google.golang.org/grpc/keepalive"
17
)
18

19
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
20
// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
21
// endpoint will be: docs-demo.solana-mainnet.quiknode.pro:10000  {10000 is the port number for gRPC}
22
// token will be : abcde123456789
23

24
var (
25
	endpoint = "YOUR_QN_ENDPOINT:10000"
26
	token    = "YOUR_TOKEN_NUMBER"
27
)
28

29
func main() {
30
	opts := []grpc.DialOption{
31
		grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})),
32
		grpc.WithKeepaliveParams(kacp),
33
		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(1024*1024*1024), grpc.UseCompressor(gzip.Name)),
34
		grpc.WithPerRPCCredentials(tokenAuth{token: token}),
35
	}
36

37
	conn, err := grpc.NewClient(endpoint, opts...)
38
	if err != nil {
39
		log.Fatalf("Failed to connect: %v", err)
40
	}
41
	defer conn.Close()
42

43
	client := pb.NewGeyserClient(conn)
44

45
    ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
46
    defer cancel()
47

48
    const BLOCKHASH_TO_CHECK = "FJcV9hJycVRkyHWf3P8qjxE2vLs6dF38RTZzZBNvNM1z"
49

50
	isBlockhashValid, err := client.IsBlockhashValid(ctx, &pb.IsBlockhashValidRequest{
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		Blockhash: BLOCKHASH_TO_CHECK,
52
	})
53
	if err != nil {
54
		log.Fatalf("Failed to check blockhash validity: %v", err)
55
	}
56

57

58
	fmt.Printf("Slot: %d\n", isBlockhashValid.Slot)
59
	fmt.Printf("Valid: %v\n", isBlockhashValid.Valid)
60

61

62
}

1
import Client, { CommitmentLevel } from "@triton-one/yellowstone-grpc";
2

3
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
4
// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
5
// endpoint will be: docs-demo.solana-mainnet.quiknode.pro:10000  {10000 is the port number for gRPC}
6
// token will be : abcde123456789
7

8
const ENDPOINT = "YOUR_QN_ENDPOINT:10000";
9
const TOKEN = "YOUR_TOKEN_NUMBER";
10

11
const BLOCKHASH_TO_CHECK = "FJcV9hJycVRkyHWf3P8qjxE2vLs6dF38RTZzZBNvNM1z";
12

13
async function main() {
14
    const client = new Client(ENDPOINT, TOKEN, {});
15

16
    const commitment = CommitmentLevel.CONFIRMED;
17

18
    try {
19
        const result = await client.isBlockhashValid(BLOCKHASH_TO_CHECK, commitment);
20
        console.log(`Blockhash validity check for ${BLOCKHASH_TO_CHECK}:`);
21
        console.log(JSON.stringify(result, null, 2));
22

23
    } catch (error) {
24
        console.error("Error checking blockhash validity:", error);
25
    }
26
}
27

28
main()
29
    .catch((err) => {
30
        console.error("Unhandled error:", err);
31
        process.exit(1);
32
    });

1
import Client, { CommitmentLevel } from "@triton-one/yellowstone-grpc";
2

3
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
4
// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
5
// endpoint will be: docs-demo.solana-mainnet.quiknode.pro:10000  {10000 is the port number for gRPC}
6
// token will be : abcde123456789
7

8
const ENDPOINT = "YOUR_QN_ENDPOINT:10000";
9
const TOKEN = "YOUR_TOKEN_NUMBER";
10

11
const BLOCKHASH_TO_CHECK = "FJcV9hJycVRkyHWf3P8qjxE2vLs6dF38RTZzZBNvNM1z";
12

13
async function main() {
14
    const client = new Client(ENDPOINT, TOKEN, {});
15

16
    const commitment = CommitmentLevel.CONFIRMED;
17

18
    try {
19
        const result = await client.isBlockhashValid(BLOCKHASH_TO_CHECK, commitment);
20
        console.log(`Blockhash validity check for ${BLOCKHASH_TO_CHECK}:`);
21
        console.log(JSON.stringify(result, null, 2));
22

23
    } catch (error) {
24
        console.error("Error checking blockhash validity:", error);
25
    }
26
}
27

28
main()
29
    .catch((err) => {
30
        console.error("Unhandled error:", err);
31
        process.exit(1);
32
    });

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