getBlock

curl --request POST \
  --url 'https://mainnet.helius-rpc.com/?api-key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getBlock",
  "params": [
    430
  ]
}
'

{
  "jsonrpc": "2.0",
  "id": "<string>",
  "result": {
    "blockhash": "DUCT8VSgk2BXkMhQfxKVYfikEZCQf4dZ4ioPdGdaVxMN",
    "previousBlockhash": "HA2fJgGqmQezCXJRVNZAWPbRMXCPjUyo7VjRF47JGdYs",
    "parentSlot": 429,
    "transactions": [
      {
        "meta": {},
        "transaction": {
          "message": {
            "accountKeys": [
              "<string>"
            ],
            "header": {
              "numReadonlySignedAccounts": 123,
              "numReadonlyUnsignedAccounts": 123,
              "numRequiredSignatures": 123
            },
            "instructions": [
              {
                "accounts": [
                  123
                ],
                "data": "<string>",
                "programIdIndex": 123,
                "stackHeight": 123
              }
            ],
            "recentBlockhash": "<string>"
          },
          "signatures": [
            "<string>"
          ]
        }
      }
    ],
    "blockTime": null,
    "blockHeight": null,
    "rewards": [
      {
        "pubkey": "<string>",
        "lamports": 123,
        "rewardType": "<string>"
      }
    ]
  }
}