updateCommitmentInAnchor

Updates an existing commitment and metadata stored within the ZK storage account (PDA) on the Anchor program.

This is similar to storeCommitmentInAnchor but typically calls a different Anchor instruction (e.g., update vs. store or set). It's used for periodically updating a device's status or latest data point in its designated on-chain storage.

Parameters

Parameter	Type	Description
privateKeyBase58	const String&	The private key of the account's authority.
authorityPubkey	const String&	The public key of the authority.
programId	const String&	The ID of the Anchor program to interact with.
seedName	const String&	The seed used to find the PDA account to update.
newCommitment	const String&	The new commitment hash to store.
metadata	const String&	The new metadata string to store.
outTxSignature	String&	Output: If successful, the signature of the transaction.

Return Value

• bool: Returns true if the data was updated successfully.

Example Code (main.cpp)

#include <Arduino.h>
#include <WiFi.h>
#include "Infratic-lib.h"

// --- WiFi Settings ---
const char* WIFI_SSID = "YOUR_WIFI_SSID";
const char* WIFI_PASSWORD = "YOUR_WIFI_PASSWORD";

// --- Solana Settings ---
const String SOLANA_RPC_URL = "[https://api.devnet.solana.com](https://api.devnet.solana.com)";
const String MY_PRIVATE_KEY_BASE58 = "YOUR_PRIVATE_KEY_BASE58";
const String MY_PUBLIC_KEY_BASE58 = "YOUR_PUBLIC_KEY_BASE58";
const String ZK_PROGRAM_ID = "YOUR_ANCHOR_PROGRAM_ID_HERE"; // Your Anchor program ID

Infratic solana(SOLANA_RPC_URL);

void setup() {
    Serial.begin(115200);
    delay(1000);

    // Connect to WiFi
    Serial.print("Connecting to WiFi...");
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println("\n✅ WiFi connected!");

    Serial.println("\n=== updateCommitmentInAnchor Example ===");

    String pdaSeed = "my_zk_storage_account"; // Seed to find the account
    String newCommitment = "99f67890a1b2c3d4e5f678902b9a7a59d6f0d36f5e8d9c12b4c7d0a3a1b2c3e5"; // Updated commitment
    String newMetadata = "sensor_id:T-1000,status:offline,last_update:1678886400";
    String txSignature;

    Serial.println("Updating commitment in the Anchor program...");

    if (solana.updateCommitmentInAnchor(MY_PRIVATE_KEY_BASE58, MY_PUBLIC_KEY_BASE58, ZK_PROGRAM_ID, pdaSeed, newCommitment, newMetadata, txSignature)) {
        Serial.println("✅ Commitment successfully updated in Anchor program!");
        Serial.println("   -> Transaction Signature: " + txSignature);
    } else {
        Serial.println("❌ Failed to update commitment.");
    }
}

void loop() {
    // Can be left empty
}