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GET
/
{chain_id}
/
api
/
v2
/
blocks
/
{block_hash_or_number_param}
Retrieves detailed information for a specific block identified by its number or hash.
curl --request GET \
  --url https://api.blockscout.com/{chain_id}/api/v2/blocks/{block_hash_or_number_param} \
  --header 'Authorization: Bearer <token>'
{
  "base_fee_per_gas": "<string>",
  "burnt_fees": "<string>",
  "burnt_fees_percentage": 123,
  "difficulty": "<string>",
  "gas_limit": "<string>",
  "gas_target_percentage": 123,
  "gas_used": "<string>",
  "gas_used_percentage": 123,
  "hash": "<string>",
  "height": 1,
  "internal_transactions_count": 1,
  "is_pending_update": true,
  "miner": {
    "ens_domain_name": "<string>",
    "hash": "<string>",
    "implementations": [
      {
        "address_hash": "<string>",
        "name": "<string>"
      }
    ],
    "is_contract": true,
    "is_scam": true,
    "is_verified": true,
    "metadata": {
      "tags": [
        {
          "meta": {},
          "name": "<string>",
          "ordinal": 123,
          "slug": "<string>",
          "tagType": "<string>"
        }
      ]
    },
    "name": "<string>",
    "private_tags": [
      {
        "address_hash": "<string>",
        "display_name": "<string>",
        "label": "<string>"
      }
    ],
    "public_tags": [
      {
        "address_hash": "<string>",
        "display_name": "<string>",
        "label": "<string>"
      }
    ],
    "watchlist_names": [
      {
        "display_name": "<string>",
        "label": "<string>"
      }
    ]
  },
  "nonce": "<string>",
  "parent_hash": "<string>",
  "priority_fee": "<string>",
  "rewards": [
    {
      "reward": "<string>",
      "type": "<string>"
    }
  ],
  "size": 1,
  "timestamp": "2023-11-07T05:31:56Z",
  "total_difficulty": "<string>",
  "transaction_fees": "<string>",
  "transactions_count": 1,
  "uncles_hashes": [
    {
      "hash": "<string>"
    }
  ],
  "withdrawals_count": 1,
  "arbitrum": {
    "batch_number": 123,
    "commitment_transaction": {
      "hash": "<string>",
      "timestamp": "2023-11-07T05:31:56Z"
    },
    "confirmation_transaction": {
      "hash": "<string>",
      "timestamp": "2023-11-07T05:31:56Z"
    },
    "delayed_messages": 123,
    "l1_block_number": 123,
    "send_count": 123,
    "send_root": "<string>"
  }
}

Authorizations

​
Authorization
string
header
required

API key passed as a Bearer token in the Authorization header.

Path Parameters

​
block_hash_or_number_param
required

Block hash or number in the path

Required range: x >= 0
​
chain_id
string
required

The ID of the blockchain

Response

Detailed information about the specified block.

Block response

​
base_fee_per_gas
string | null
required

EIP-1559 base fee per gas, in wei. Null on blocks produced before EIP-1559 activation or on chains that do not implement EIP-1559.

Pattern: ^-?([1-9][0-9]*|0)$
​
burnt_fees
string | null
required

Sum of EIP-1559 base fees burned by transactions in this block, in wei.

Pattern: ^-?([1-9][0-9]*|0)$
​
burnt_fees_percentage
number<float> | null
required

Burned base fees as a percentage of total transaction fees in this block.

​
difficulty
string | null
required

Proof-of-work difficulty of this block. Zero on proof-of-stake chains.

Pattern: ^-?([1-9][0-9]*|0)$
​
gas_limit
string
required
Pattern: ^-?([1-9][0-9]*|0)$
​
gas_target_percentage
number<float>
required

Percent above the EIP-1559 elasticity target (gas_used vs. gas_limit / elasticity_multiplier).

​
gas_used
string
required
Pattern: ^-?([1-9][0-9]*|0)$
​
gas_used_percentage
number<float>
required

Gas used in this block as a percentage of gas_limit.

​
hash
string
required
Pattern: ^0x([A-Fa-f0-9]{64})$
​
height
integer
required

Block number (zero-based index from genesis).

Required range: x >= 0
​
internal_transactions_count
integer | null
required

Number of internal transactions in this block; null when the count is unavailable.

Required range: x >= 0
​
is_pending_update
boolean | null
required

True when the block is scheduled for re-fetch; its fields may change once re-fetching completes.

​
miner
Address · object
required

Address credited with the block — the miner on PoW chains, the fee recipient / proposer on PoS chains, and the sequencer on rollups.

​
nonce
string
required

Proof-of-work nonce used to satisfy the difficulty target. Zero on proof-of-stake chains.

Pattern: ^0x([A-Fa-f0-9]*)$
​
parent_hash
string
required
Pattern: ^0x([A-Fa-f0-9]{64})$
​
priority_fee
string | null
required

Sum of validator tips (EIP-1559 priority fees) paid by transactions in this block, in wei.

Pattern: ^-?([1-9][0-9]*|0)$
​
rewards
object[]
required

Block rewards grouped by recipient category. Single-block variant: type is a human-readable label rather than a machine identifier.

​
size
integer | null
required

Block size in bytes (length of the RLP-encoded block).

Required range: x >= 0
​
timestamp
string<date-time>
required
​
total_difficulty
string | null
required

Cumulative chain difficulty through this block (sum of difficulty of this block and all ancestors).

Pattern: ^-?([1-9][0-9]*|0)$
​
transaction_fees
string
required

Sum of transaction fees (gas price × gas used) paid by transactions in this block, in wei.

Pattern: ^-?([1-9][0-9]*|0)$
​
transactions_count
integer
required
Required range: x >= 0
​
type
enum<string>
required

Block classification: block = main-chain consensus block; uncle = ommer (valid but not in main chain); reorg = former main-chain block lost to reorganization.

Available options:
block,
uncle,
reorg
​
uncles_hashes
object[]
required

Hashes of ommer (uncle) blocks referenced by this block.

​
withdrawals_count
integer | null
required

Number of withdrawals included in this block; null when the count is unavailable.

Required range: x >= 0
​
arbitrum
object