getBlock RPC Method

Returns identity and transaction information about a confirmed block in the ledger

Parameters

u64 required slot number, as u64 integer

object optional Configuration object containing the following fields:

commitment string optional
- Default: finalized
  - processed is not supported.
encoding string optional
- Default: json encoding format for each returned transaction
- json``jsonParsed``base58``base64
  - jsonParsed attempts to use program-specific instruction parsers to return more human-readable and explicit data in the transaction.message.instructions list.
  - If jsonParsed is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (accounts, data, and programIdIndex fields).
transactionDetails string optional Default: full level of transaction detail to return Values: full accounts signatures none
- If accounts are requested, transaction details only include signatures and an annotated list of accounts in each transaction.
- Transaction metadata is limited to only: fee, err, pre_balances, post_balances, pre_token_balances, and post_token_balances.
maxSupportedTransactionVersion number optional the max transaction version to return in responses.
- If the requested block contains a transaction with a higher version, an error will be returned.
- If this parameter is omitted, only legacy transactions will be returned, and a block containing any versioned transaction will prompt the error.
rewards bool optional whether to populate the rewards array. If parameter not provided, the default includes rewards.

Result

The result field will be an object with the following fields:

<null> - if specified block is not confirmed
<object> - if block is confirmed, an object with the following fields:
- blockhash: <string> - the blockhash of this block, as base-58 encoded string
- previousBlockhash: <string> - the blockhash of this block's parent, as base-58 encoded string; if the parent block is not available due to ledger cleanup, this field will return "11111111111111111111111111111111"
- parentSlot: <u64> - the slot index of this block's parent
- transactions: <array> - present if "full" transaction details are requested; an array of JSON objects containing:
  - transaction: <object|[string,encoding]> - Transaction object, either in JSON format or encoded binary data, depending on encoding parameter
  - meta: <object> - transaction status metadata object, containing null or:
    - err: <object|null> - Error if transaction failed, null if transaction succeeded.
    - fee: <u64> - fee this transaction was charged, as u64 integer
    - preBalances: <array> - array of u64 account balances from before the transaction was processed
    - postBalances: <array> - array of u64 account balances after the transaction was processed
    - innerInstructions: <array|null> - List of inner instructions or null if inner instruction recording was not enabled during this transaction
    - preTokenBalances: <array|undefined> - List of token balances from before the transaction was processed or omitted if token balance recording was not yet enabled during this transaction
    - postTokenBalances: <array|undefined> - List of token balances from after the transaction was processed or omitted if token balance recording was not yet enabled during this transaction
    - logMessages: <array|null> - array of string log messages or null if log message recording was not enabled during this transaction
    - rewards: <array|null> - transaction-level rewards, populated if rewards are requested; an array of JSON objects containing:
      - pubkey: <string> - The public key, as base-58 encoded string, of the account that received the reward
      - lamports: <i64>- number of reward lamports credited or debited by the account, as a i64
      - postBalance: <u64> - account balance in lamports after the reward was applied
      - rewardType: <string|undefined> - type of reward: "fee", "rent", "voting", "staking"
      - commission: <u8|undefined> - vote account commission when the reward was credited, only present for voting and staking rewards
    - DEPRECATED: status: <object> - Transaction status
      - "Ok": <null> - Transaction was successful
      - "Err": <ERR> - Transaction failed with TransactionError
    - loadedAddresses: <object|undefined> - Transaction addresses loaded from address lookup tables. Undefined if maxSupportedTransactionVersion is not set in request params, or if jsonParsed encoding is set in request params.
      - writable: <array[string]> - Ordered list of base-58 encoded addresses for writable loaded accounts
      - readonly: <array[string]> - Ordered list of base-58 encoded addresses for readonly loaded accounts
    - returnData: <object|undefined> - the most-recent return data generated by an instruction in the transaction, with the following fields:
      - programId: <string> - the program that generated the return data, as base-58 encoded Pubkey
      - data: <[string, encoding]> - the return data itself, as base-64 encoded binary data
    - computeUnitsConsumed: <u64|undefined> - number of compute units consumed by the transaction
  - version: <"legacy"|number|undefined> - Transaction version. Undefined if maxSupportedTransactionVersion is not set in request params.
- signatures: <array> - present if "signatures" are requested for transaction details; an array of signatures strings, corresponding to the transaction order in the block
- rewards: <array|undefined> - block-level rewards, present if rewards are requested; an array of JSON objects containing:
  - pubkey: <string> - The public key, as base-58 encoded string, of the account that received the reward
  - lamports: <i64>- number of reward lamports credited or debited by the account, as a i64
  - postBalance: <u64> - account balance in lamports after the reward was applied
  - rewardType: <string|undefined> - type of reward: "fee", "rent", "voting", "staking"
  - commission: <u8|undefined> - vote account commission when the reward was credited, only present for voting and staking rewards
- blockTime: <i64|null> - estimated production time, as Unix timestamp (seconds since the Unix epoch). null if not available
- blockHeight: <u64|null> - the number of blocks beneath this block

Code sample

curl https://mainnet.koii.network -X POST -H "Content-Type: application/json" -d '
  {
    "jsonrpc": "2.0","id":1,
    "method":"getBlock",
    "params": [
      430,
      {
        "encoding": "json",
        "maxSupportedTransactionVersion":0,
        "transactionDetails":"full",
        "rewards":false
      }
    ]
  }
'

Response

{
  "jsonrpc": "2.0",
  "result": {
    "blockHeight": 428,
    "blockTime": null,
    "blockhash": "3Eq21vXNB5s86c62bVuUfTeaMif1N2kUqRPBmGRJhyTA",
    "parentSlot": 429,
    "previousBlockhash": "mfcyqEXB3DnHXki6KjjmZck6YjmZLvpAByy2fj4nh6B",
    "transactions": [
      {
        "meta": {
          "err": null,
          "fee": 5000,
          "innerInstructions": [],
          "logMessages": [],
          "postBalances": [499998932500, 26858640, 1, 1, 1],
          "postTokenBalances": [],
          "preBalances": [499998937500, 26858640, 1, 1, 1],
          "preTokenBalances": [],
          "rewards": null,
          "status": {
            "Ok": null
          }
        },
        "transaction": {
          "message": {
            "accountKeys": [
              "3UVYmECPPMZSCqWKfENfuoTv51fTDTWicX9xmBD2euKe",
              "AjozzgE83A3x1sHNUR64hfH7zaEBWeMaFuAN9kQgujrc",
              "SysvarS1otHashes111111111111111111111111111",
              "SysvarC1ock11111111111111111111111111111111",
              "Vote111111111111111111111111111111111111111"
            ],
            "header": {
              "numReadonlySignedAccounts": 0,
              "numReadonlyUnsignedAccounts": 3,
              "numRequiredSignatures": 1
            },
            "instructions": [
              {
                "accounts": [1, 2, 3, 0],
                "data": "37u9WtQpcm6ULa3WRQHmj49EPs4if7o9f1jSRVZpm2dvihR9C8jY4NqEwXUbLwx15HBSNcP1",
                "programIdIndex": 4
              }
            ],
            "recentBlockhash": "mfcyqEXB3DnHXki6KjjmZck6YjmZLvpAByy2fj4nh6B"
          },
          "signatures": [
            "2nBhEBYYvfaAe16UMNqRHre4YNSskvuYgx3M6E4JP1oDYvZEJHvoPzyUidNgNX5r9sTyN1J9UxtbCXy2rqYcuyuv"
          ]
        }
      }
    ]
  },
  "id": 1
}

Parameters​

Result​

Code sample​

Response​

Parameters

Result

Code sample

Response