getBlock

Parameters

• <u64> - a slot integer denoting the target block number.

• <object> - (optional) Config object:

  • encoding: (optional) <string> - data encoding for each returned transaction

Accepts one of the following strings:
["json" (Default), "jsonParsed", "base58" (slow), "base64"]
"jsonParsed" encoding attempts to use program-specific parsers to make the transaction.message.instructions list more human-readable; if a parser cannot be found, the instruction falls back to default JSON.

* `transactionDetails:` (optional) _\<string>_ - level of transaction detail to return\
  Accepts one of the following strings:\
  \[`"full"` _(Default)_, `"signatures"`, or `"none"`]
* `rewards:` __ (optional) _bool_ - whether to populate the `rewards` array.  `true` (Default)
* `commitment:` (optional) Configures the commitment level of the blocks queried\
  Accepts one of the following strings: \[`"finalized"`, `"confirmed"`, `"processed"]` \
  For more info, refer to this [doc](https://docs.solana.com/developing/clients/jsonrpc-api#configuring-state-commitment).
* `maxSupportedTransactionVersion:` _(_optional) _\<number>_ - sets the maximum transaction version.

📘

Note

For maxSupportedTransactionVersion: you cannot query blocks that contain a transaction with a higher version.

Returns

Confirmed Block

• <object> - Object
  • blockhash: < base-58 encoded string> - blockhash of a given block
  • previousBlockhash:< base-58 encoded string> - the blockhash of this block's parent. 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: <JSON array> - transaction details when queried with the "full" flag under transactionDetails
    • transaction: <object|[string,encoding]> - encoded transaction object
    • meta: <object> - transaction status metadata object, containing null or:
      • err: <object | null> - If transaction failed, error message. If transaction succeeded null.
      • fee: <u64> - fee for this transaction
      • preBalances: <array of u64s> - account balances from before the transaction was processed
      • postBalances: <array of u64s> - account balances after the transaction was processed
      • innerInstructions: <array|null> - List of inner instructions
        null if not enabled during this transaction
      • preTokenBalances: <array|undefined> - List of token balances from before the transaction was processed or
        Undefined if token balance recording was not yet enabled during this transaction
      • postTokenBalances: <array|undefined> - List of token balances from after the transaction was processed
        Undefined if token balance recording was not yet enabled during this transaction
      • logMessages: <array|null> - array of string log messages
        null if log message recording was not enabled during this transaction
      • loadedAddresses: <object|undefined> - Transaction addresses loaded from address lookup tables. Undefined if maxSupportedTransactionVersion was not set in request params.
        • writable: <array[string base-58 encoded addresses]> - Ordered list addresses for writable loaded accounts
        • readonly: <array[string base-58 encoded addresses]> - Ordered list addresses for read only loaded accounts
    • version: <"legacy"|number|undefined> - Transaction version.
      Undefined if maxSupportedTransactionVersion is not set in request params.
  • signatures: <array of strings> - present if "signatures" are requested for transaction details corresponding to the transaction order in the block
  • rewards: <array of JSON objects> - Object present if rewards are requested
    • pubkey: <base-58 encoded string> - The public key 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

"Unconfirmed Block"

• <null> - if the specified block is not confirmed

Example

Request

curl --location --request POST 'https://solana-mainnet.g.alchemy.com/v2/demo' \
--header 'Content-Type: application/json' \
--data-raw '{"jsonrpc": "2.0","id":1,"method":"getBlock","params":[430, {"encoding": "json","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": [],
          "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
}

{
  "jsonrpc": "2.0",
  "result": {
    "blockHeight": 428,
    "blockTime": null,
    "blockhash": "3Eq21vXNB5s86c62bVuUfTeaMif1N2kUqRPBmGRJhyTA",
    "parentSlot": 429,
    "previousBlockhash": "mfcyqEXB3DnHXki6KjjmZck6YjmZLvpAByy2fj4nh6B",
    "rewards": [],
    "transactions": [
      {
        "meta": {
          "err": null,
          "fee": 5000,
          "innerInstructions": null,
          "logMessages": null,
          "postBalances": [499998932500, 26858640, 1, 1, 1],
          "postTokenBalances": [],
          "preBalances": [499998937500, 26858640, 1, 1, 1],
          "preTokenBalances": [],
          "status": {
            "Ok": null
          }
        },
        "transaction": [
          "AVj7dxHlQ9IrvdYVIjuiRFs1jLaDMHixgrv+qtHBwz51L4/ImLZhszwiyEJDIp7xeBSpm/TX5B7mYzxa+fPOMw0BAAMFJMJVqLw+hJYheizSoYlLm53KzgT82cDVmazarqQKG2GQsLgiqktA+a+FDR4/7xnDX7rsusMwryYVUdixfz1B1Qan1RcZLwqvxvJl4/t3zHragsUp0L47E24tAFUgAAAABqfVFxjHdMkoVmOYaR1etoteuKObS21cc1VbIQAAAAAHYUgdNXR0u3xNdiTr072z2DVec9EQQ/wNo1OAAAAAAAtxOUhPBp2WSjUNJEgfvy70BbxI00fZyEPvFHNfxrtEAQQEAQIDADUCAAAAAQAAAAAAAACtAQAAAAAAAAdUE18R96XTJCe+YfRfUp6WP+YKCy/72ucOL8AoBFSpAA==",
          "base64"
        ]
      }
    ]
  },
  "id": 1
}