z_validateaddress - Zcash

Example code for the z_validateaddress JSON-RPC method. Сomplete guide on how to use the z_validateaddress JSON-RPC method in GetBlock.io Web3 documentation.

This method validates a Zcash shielded or unified address (Sapling zs, Orchard, or Unified u) and returns type-specific metadata. Unified addresses can contain multiple receivers (transparent + Sapling + Orchard); the response indicates which types are present. Use validateaddress for transparent addresses.

Parameters

Parameter	Type	Required	Description
address	string	Yes	Shielded or Unified Zcash address

Request

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "z_validateaddress",
    "params": [
        "u1l8xunezsvhq8fgzfl7404m450nwnd76zshscn6nfys7vyz2ywyh4cc5daaq0c7q2su5lqfh23sp7fkf3kt27ve5948mzpfdvckzaext2jkbmhth7pnfhr37a3wpk3q6clhx"
    ],
    "id": "getblock.io"
}'

Axios

example.js

const axios = require('axios');

const response = await axios.post('https://go.getblock.io/<ACCESS-TOKEN>/', {
    jsonrpc: '2.0',
    method: 'z_validateaddress',
    params: [
        "u1l8xunezsvhq8fgzfl7404m450nwnd76zshscn6nfys7vyz2ywyh4cc5daaq0c7q2su5lqfh23sp7fkf3kt27ve5948mzpfdvckzaext2jkbmhth7pnfhr37a3wpk3q6clhx"
    ],
    id: 'getblock.io'
}, {
    headers: { 'Content-Type': 'application/json' }
});

console.log(response.data.result);

Request

example.py

import requests

response = requests.post(
    'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'z_validateaddress',
        'params': [
        "u1l8xunezsvhq8fgzfl7404m450nwnd76zshscn6nfys7vyz2ywyh4cc5daaq0c7q2su5lqfh23sp7fkf3kt27ve5948mzpfdvckzaext2jkbmhth7pnfhr37a3wpk3q6clhx"
    ],
        'id': 'getblock.io'
    }
)

print(response.json())

Rust

example.rs

use reqwest::Client;
use serde_json::{json, Value};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();
    
    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&json!({
            "jsonrpc": "2.0",
            "method": "z_validateaddress",
            "params": [
        "u1l8xunezsvhq8fgzfl7404m450nwnd76zshscn6nfys7vyz2ywyh4cc5daaq0c7q2su5lqfh23sp7fkf3kt27ve5948mzpfdvckzaext2jkbmhth7pnfhr37a3wpk3q6clhx"
    ],
            "id": "getblock.io"
        }))
        .send()
        .await?
        .json::<Value>()
        .await?;
    
    println!("Result: {}", response["result"]);
    Ok(())
}

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "isvalid": true,
        "address_type": "unified",
        "address": "u1l8xunezsvhq8fgzfl7404m450nwnd76zshscn6nfys7vyz2ywyh4cc5daaq0c7q2su5lqfh23sp7fkf3kt27ve5948mzpfdvckzaext2jkbmhth7pnfhr37a3wpk3q6clhx",
        "receiver_types": [
            "orchard",
            "sapling",
            "p2pkh"
        ]
    }
}

Response Parameters

Parameter	Type	Description
isvalid	boolean	true if the address is well-formed
address_type	string	Address type: sapling, orchard, unified, or p2pkh/p2sh for transparent
address	string	The validated address
receiver_types	array of string	For unified addresses: list of receiver types included (orchard, sapling, p2pkh, p2sh)

Use Cases

• Shielded Wallet Input Validation: Verify shielded and unified addresses before allowing send

• Unified Address Introspection: Determine which receiver types a unified address supports to select the appropriate spending pool

• Address Migration Support: Detect legacy Sapling addresses vs modern Orchard/unified addresses in wallet UX

• Compliance Address Type Reporting: Distinguish shielded vs transparent activity for jurisdictional reporting

Error Handling

Error Code	Message	Description
-8	Invalid address	Address is not a valid shielded or unified Zcash address
-32602	Invalid params	Address parameter is missing or malformed
-32603	Internal error	Node failed to validate the address