This is the first block in the Bitcoin blockchain, known as the Genesis Block. This block was mined by Bitcoin's creator Satoshi Nakamoto.
Read more here: bitcoin.it/wiki/Genesis_block.
{
"hash": "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
"confirmations": 928478,
"height": 0,
"version": 1,
"versionHex": "00000001",
"merkleroot": "4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b",
"time": 1231006505,
"mediantime": 1231006505,
"nonce": 2083236893,
"bits": "1d00ffff",
"target": "00000000000000000001e63a0000000000000000000000000000000000000000",
"difficulty": 1,
"chainwork": "0000000000000000000000000000000000000000000000000000000100010001",
"nTx": 1,
"nextblockhash": "00000000839a8e6886ab5951d76f411475428afc90947ee320161bbf18eb6048",
"tx": "See 'Transaction IDs'",
"subsidy": "50"
}[]{
"avgfee": 0,
"avgfeerate": 0,
"avgtxsize": 0,
"blockhash": "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
"feerate_percentiles": [
0,
0,
0,
0,
0
],
"height": 0,
"ins": 0,
"maxfee": 0,
"maxfeerate": 0,
"maxtxsize": 0,
"medianfee": 0,
"mediantime": 1231006505,
"mediantxsize": 0,
"minfee": 0,
"minfeerate": 0,
"mintxsize": 0,
"outs": 1,
"subsidy": 5000000000,
"swtotal_size": 0,
"swtotal_weight": 0,
"swtxs": 0,
"time": 1231006505,
"total_out": 0,
"total_size": 0,
"total_weight": 0,
"totalfee": 0,
"txs": 1,
"utxo_increase": 1,
"utxo_size_inc": 117
}