So verwenden Sie getSignatureStatuses

# Replace <api-key> with your Helius API key
# Replace with actual transaction signatures
curl https://mainnet.helius-rpc.com/?api-key=<api-key> -X POST -H "Content-Type: application/json" -d \
  '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getSignatureStatuses",
    "params": [
      [
        "5VERv8NMvzbJMEkV8xnrLkEaWRtSz9CosKDYjCJjBRnbJLgp8uirBgmQpjKhoR4tjF3ZpRzrFmBV6UjKdiSZkQUW",
        "2x5YfV29N4p9K2kEFK2gFfC5T5acbs2z2MytTZqrgq17pYjCMfYjW4sAUpkWMkMzxGztD2Qv5v7n92uYJcQY9c7a" 
      ]
    ]
  }'

// Replace <api-key> with your Helius API key
const { Connection } = require('@solana/web3.js');

async function checkRecentSignatures() {
  const connection = new Connection('https://mainnet.helius-rpc.com/?api-key=<api-key>');
  const signatures = [
    '5VERv8NMvzbJMEkV8xnrLkEaWRtSz9CosKDYjCJjBRnbJLgp8uirBgmQpjKhoR4tjF3ZpRzrFmBV6UjKdiSZkQUW',
    '2x5YfV29N4p9K2kEFK2gFfC5T5acbs2z2MytTZqrgq17pYjCMfYjW4sAUpkWMkMzxGztD2Qv5v7n92uYJcQY9c7a' // Replace with another signature
  ];

  try {
    const response = await connection.getSignatureStatuses(signatures);
    console.log("RPC Response Context Slot:", response.context.slot);
    response.value.forEach((status, index) => {
      console.log(`--- Status for Signature ${index + 1} (${signatures[index].substring(0,10)}...) ---`);
      if (status) {
        console.log(`  Slot: ${status.slot}`);
        console.log(`  Confirmations: ${status.confirmations === null ? 'Finalized (or N/A)' : status.confirmations}`);
        console.log(`  Error: ${JSON.stringify(status.err)}`);
        console.log(`  Execution Status: ${JSON.stringify(status.status)}`);
        console.log(`  Confirmation Status: ${status.confirmationStatus}`);
      } else {
        console.log('  Status not found (likely not in recent cache or does not exist).');
      }
    });
  } catch (error) {
    console.error('Error fetching signature statuses:', error);
  }
}

checkRecentSignatures();

# Replace <api-key> with your Helius API key
# Replace with actual transaction signatures
curl https://mainnet.helius-rpc.com/?api-key=<api-key> -X POST -H "Content-Type: application/json" -d \
  '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getSignatureStatuses",
    "params": [
      [
        "3jPTfHcbzWHeD4jW8q4Y8g3h2D1aBwM81y1sHhDqYQ7Z9x5n7cVy2gD8QWbK9eXwSjJ6aA7FzV2kLpQoEwU9jX", 
        "4SyzjM2fTALqTNjLKMM1yG1bW7kCFu2GvEkKcvKChG9o1KjQW8jLdZ6sWfN9mP1pU3rD7XvA6B2CjHkLwRzYxTnX"  
      ],
      {
        "searchTransactionHistory": true
      }
    ]
  }'

// Replace <api-key> with your Helius API key
const { Connection } = require('@solana/web3.js');

async function checkSignaturesWithHistory() {
  const connection = new Connection('https://mainnet.helius-rpc.com/?api-key=<api-key>');
  const signatures = [
    // Replace with a signature you know is older or might have been dropped
    '3jPTfHcbzWHeD4jW8q4Y8g3h2D1aBwM81y1sHhDqYQ7Z9x5n7cVy2gD8QWbK9eXwSjJ6aA7FzV2kLpQoEwU9jX',
    // Replace with another valid signature
    '4SyzjM2fTALqTNjLKMM1yG1bW7kCFu2GvEkKcvKChG9o1KjQW8jLdZ6sWfN9mP1pU3rD7XvA6B2CjHkLwRzYxTnX' 
  ];

  try {
    const response = await connection.getSignatureStatuses(signatures, { searchTransactionHistory: true });
    console.log("RPC Response Context Slot:", response.context.slot);
    response.value.forEach((status, index) => {
      console.log(`--- Status for Signature ${index + 1} (${signatures[index].substring(0,10)}...) ---`);
      if (status) {
        console.log(`  Slot: ${status.slot}`);
        console.log(`  Confirmations: ${status.confirmations === null ? 'Finalized (or N/A)' : status.confirmations}`);
        console.log(`  Error: ${JSON.stringify(status.err)}`);
        console.log(`  Execution Status: ${JSON.stringify(status.status)}`);
        console.log(`  Confirmation Status: ${status.confirmationStatus}`);
      } else {
        console.log('  Status not found (even with history search, it might not exist or is too old).');
      }
    });
  } catch (error) {
    console.error('Error fetching signature statuses with history:', error);
  }
}

checkSignaturesWithHistory();