Please note that this method is deprecated and is no longer supported on zkSync networks. Use zks_getL2ToL1LogProof instead.

Parameters

block

integer

REQUIRED

The number of the block where the message was emitted

sender

string

REQUIRED

The sender of the message

msg

string

REQUIRED

The keccak256 hash of the sent message

l2_log_position

string

The index in the block of the event that was emitted by the L1Messenger when submitting this message

Returns

id

The position of the leaf in the Merkle tree of L2->L1 messages for the block

proof

The Merkle proof for the message

root

The root hash representing the Merkle tree root at the time the L2 to L1 log was generated

Request

1
curl -X POST "https://docs-demo.zksync-mainnet.quiknode.pro/" \
2
  -H "Content-Type: application/json" \
3
  -d '{
4
  "jsonrpc": "2.0",
5
  "method": "zks_getL2ToL1MsgProof",
6
  "params": [
7
    5187,
8
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
9
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
10
  ],
11
  "id": 1
12
}'

1
curl -X POST "https://docs-demo.zksync-mainnet.quiknode.pro/" \
2
  -H "Content-Type: application/json" \
3
  -d '{
4
  "jsonrpc": "2.0",
5
  "method": "zks_getL2ToL1MsgProof",
6
  "params": [
7
    5187,
8
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
9
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
10
  ],
11
  "id": 1
12
}'

1
import { ethers } from "ethers";
2

3
async function main() {
4
    const provider = new ethers.JsonRpcProvider("https://docs-demo.zksync-mainnet.quiknode.pro/");
5
    const response = await provider.send("zks_getL2ToL1MsgProof", [
6
    5187,
7
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
8
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
9
]);
10
    console.log(response);
11
}
12

13
main();

1
import { ethers } from "ethers";
2

3
async function main() {
4
    const provider = new ethers.JsonRpcProvider("https://docs-demo.zksync-mainnet.quiknode.pro/");
5
    const response = await provider.send("zks_getL2ToL1MsgProof", [
6
    5187,
7
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
8
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
9
]);
10
    console.log(response);
11
}
12

13
main();

1
require 'eth'
2

3
client = Eth::Client.create 'https://docs-demo.zksync-mainnet.quiknode.pro/'
4
payload = {
5
    "jsonrpc": "2.0",
6
    "method": "zks_getL2ToL1MsgProof",
7
    "params": [
8
        5187,
9
        "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
10
        "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
11
    ],
12
    "id": "1"
13
}
14

15
response = client.send(payload.to_json)
16
puts response

1
require 'eth'
2

3
client = Eth::Client.create 'https://docs-demo.zksync-mainnet.quiknode.pro/'
4
payload = {
5
    "jsonrpc": "2.0",
6
    "method": "zks_getL2ToL1MsgProof",
7
    "params": [
8
        5187,
9
        "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
10
        "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
11
    ],
12
    "id": "1"
13
}
14

15
response = client.send(payload.to_json)
16
puts response

1
from web3 import Web3, HTTPProvider
2
w3 = Web3(HTTPProvider('https://docs-demo.zksync-mainnet.quiknode.pro/'))
3
response = w3.provider.make_request("zks_getL2ToL1MsgProof", [5187,"0x87869cb87c4Fa78ca278dF358E890FF73B42a39E","0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"])
4
print(response)

1
from web3 import Web3, HTTPProvider
2
w3 = Web3(HTTPProvider('https://docs-demo.zksync-mainnet.quiknode.pro/'))
3
response = w3.provider.make_request("zks_getL2ToL1MsgProof", [5187,"0x87869cb87c4Fa78ca278dF358E890FF73B42a39E","0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"])
4
print(response)

1
import { createPublicClient, http } from 'viem'
2

3
async function main() {
4
    const client = createPublicClient({
5
        transport: http('https://docs-demo.zksync-mainnet.quiknode.pro/')
6
    })
7

8
    const result = await client.request({
9
        method: 'zks_getL2ToL1MsgProof',
10
        params: [
11
          5187,
12
          "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
13
          "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
14
        ]
15
    })
16

17
    console.log(result)
18
}
19

20
main()

1
import { createPublicClient, http } from 'viem'
2

3
async function main() {
4
    const client = createPublicClient({
5
        transport: http('https://docs-demo.zksync-mainnet.quiknode.pro/')
6
    })
7

8
    const result = await client.request({
9
        method: 'zks_getL2ToL1MsgProof',
10
        params: [
11
          5187,
12
          "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
13
          "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
14
        ]
15
    })
16

17
    console.log(result)
18
}
19

20
main()

1
import { QuicknodeSdk } from '@quicknode/sdk'
2

3
const qn = new QuicknodeSdk({})
4

5
const result = await qn.rpc.call(
6
  'zks_getL2ToL1MsgProof',
7
  [
8
  5187,
9
  "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
10
  "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
11
],
12
  undefined,
13
  'https://docs-demo.zksync-mainnet.quiknode.pro/'
14
)
15

16
console.log(result)

1
import { QuicknodeSdk } from '@quicknode/sdk'
2

3
const qn = new QuicknodeSdk({})
4

5
const result = await qn.rpc.call(
6
  'zks_getL2ToL1MsgProof',
7
  [
8
  5187,
9
  "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
10
  "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
11
],
12
  undefined,
13
  'https://docs-demo.zksync-mainnet.quiknode.pro/'
14
)
15

16
console.log(result)

1
import asyncio
2
from quicknode_sdk import QuicknodeSdk, SdkFullConfig
3

4
async def main():
5
    qn = QuicknodeSdk(SdkFullConfig(api_key=None))
6
    result = await qn.rpc.call(
7
        "zks_getL2ToL1MsgProof",
8
        [
9
            5187,
10
            "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
11
            "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
12
        ],
13
        endpoint_url="https://docs-demo.zksync-mainnet.quiknode.pro/",
14
    )
15
    print(result)
16

17
asyncio.run(main())

1
import asyncio
2
from quicknode_sdk import QuicknodeSdk, SdkFullConfig
3

4
async def main():
5
    qn = QuicknodeSdk(SdkFullConfig(api_key=None))
6
    result = await qn.rpc.call(
7
        "zks_getL2ToL1MsgProof",
8
        [
9
            5187,
10
            "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
11
            "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
12
        ],
13
        endpoint_url="https://docs-demo.zksync-mainnet.quiknode.pro/",
14
    )
15
    print(result)
16

17
asyncio.run(main())

1
require "quicknode_sdk"
2

3
qn = QuicknodeSdk::SDK.from_config(api_key: nil)
4

5
result = qn.rpc.call(
6
  method: "zks_getL2ToL1MsgProof",
7
  params: [
8
    5187,
9
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
10
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
11
  ],
12
  endpoint_url: "https://docs-demo.zksync-mainnet.quiknode.pro/"
13
)
14

15
puts result

1
require "quicknode_sdk"
2

3
qn = QuicknodeSdk::SDK.from_config(api_key: nil)
4

5
result = qn.rpc.call(
6
  method: "zks_getL2ToL1MsgProof",
7
  params: [
8
    5187,
9
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
10
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
11
  ],
12
  endpoint_url: "https://docs-demo.zksync-mainnet.quiknode.pro/"
13
)
14

15
puts result

1
use quicknode_sdk::{QuicknodeSdk, SdkFullConfig};
2

3
#[tokio::main]
4
async fn main() -> Result<(), Box<dyn std::error::Error>> {
5
    let qn = QuicknodeSdk::new(&SdkFullConfig::keyless())?;
6
    let result = qn
7
        .rpc
8
        .call(
9
            "zks_getL2ToL1MsgProof",
10
            Some(serde_json::json!([
11
    5187,
12
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
13
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
14
])),
15
            None,
16
            Some("https://docs-demo.zksync-mainnet.quiknode.pro/".into()),
17
        )
18
        .await?;
19

20
    println!("{result}");
21
    Ok(())
22
}

1
use quicknode_sdk::{QuicknodeSdk, SdkFullConfig};
2

3
#[tokio::main]
4
async fn main() -> Result<(), Box<dyn std::error::Error>> {
5
    let qn = QuicknodeSdk::new(&SdkFullConfig::keyless())?;
6
    let result = qn
7
        .rpc
8
        .call(
9
            "zks_getL2ToL1MsgProof",
10
            Some(serde_json::json!([
11
    5187,
12
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
13
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
14
])),
15
            None,
16
            Some("https://docs-demo.zksync-mainnet.quiknode.pro/".into()),
17
        )
18
        .await?;
19

20
    println!("{result}");
21
    Ok(())
22
}

1
const body = {
2
    jsonrpc: '2.0',
3
    method: 'zks_getL2ToL1MsgProof',
4
    params: [5187,"0x87869cb87c4Fa78ca278dF358E890FF73B42a39E","0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"],
5
    id: 1
6
}
7

8
async function main() {
9
    const response = await fetch('https://docs-demo.zksync-mainnet.quiknode.pro/', {
10
        method: 'POST',
11
        headers: {'Content-Type': 'application/json'},
12
        body: JSON.stringify(body)
13
    })
14
    const data = await response.json()
15
    console.log(data)
16
}
17

18
main()

1
const body = {
2
    jsonrpc: '2.0',
3
    method: 'zks_getL2ToL1MsgProof',
4
    params: [5187,"0x87869cb87c4Fa78ca278dF358E890FF73B42a39E","0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"],
5
    id: 1
6
}
7

8
async function main() {
9
    const response = await fetch('https://docs-demo.zksync-mainnet.quiknode.pro/', {
10
        method: 'POST',
11
        headers: {'Content-Type': 'application/json'},
12
        body: JSON.stringify(body)
13
    })
14
    const data = await response.json()
15
    console.log(data)
16
}
17

18
main()

1
import requests
2
import json
3

4
url = "https://docs-demo.zksync-mainnet.quiknode.pro/"
5

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "zks_getL2ToL1MsgProof",
9
  "params": [
10
    5187,
11
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
12
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
13
  ],
14
  "id": 1
15
})
16
headers = {
17
  'Content-Type': 'application/json'
18
}
19

20
response = requests.request("POST", url, headers=headers, data=payload)
21

22
print(response.text)

1
import requests
2
import json
3

4
url = "https://docs-demo.zksync-mainnet.quiknode.pro/"
5

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "zks_getL2ToL1MsgProof",
9
  "params": [
10
    5187,
11
    "0x87869cb87c4Fa78ca278dF358E890FF73B42a39E",
12
    "0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"
13
  ],
14
  "id": 1
15
})
16
headers = {
17
  'Content-Type': 'application/json'
18
}
19

20
response = requests.request("POST", url, headers=headers, data=payload)
21

22
print(response.text)

1
require "uri"
2
require "json"
3
require "net/http"
4

5
uri = URI("https://docs-demo.zksync-mainnet.quiknode.pro/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "zks_getL2ToL1MsgProof",
11
  params: [5187,"0x87869cb87c4Fa78ca278dF358E890FF73B42a39E","0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"]
12
}
13

14
request = Net::HTTP::Post.new(uri)
15
request["Content-Type"] = "application/json"
16
request.body = JSON.generate(payload)
17

18
response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
19
  http.request(request)
20
end
21

22
puts response.body

1
require "uri"
2
require "json"
3
require "net/http"
4

5
uri = URI("https://docs-demo.zksync-mainnet.quiknode.pro/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "zks_getL2ToL1MsgProof",
11
  params: [5187,"0x87869cb87c4Fa78ca278dF358E890FF73B42a39E","0x22de7debaa98758afdaee89f447ff43bab5da3de6acca7528b281cc2f1be2ee9"]
12
}
13

14
request = Net::HTTP::Post.new(uri)
15
request["Content-Type"] = "application/json"
16
request.body = JSON.generate(payload)
17

18
response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
19
  http.request(request)
20
end
21

22
puts response.body

Response

1
{
2
  "jsonrpc": "2.0",
3
  "id": 1,
4
  "result": "0x0"
5
}

1
{
2
  "jsonrpc": "2.0",
3
  "id": 1,
4
  "result": "0x0"
5
}

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