The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 171
Hash: 6ca2ef4bd0bfcbfd5c2c9dc2f70e3bfdc65b0c94e41512e93e6aa1b0dd224f37
Previous block: 074b24f869ee9c553bfc0924951075ecf9f1781c3606c4eb90f69885475a7ccc
Next block: 70dfdbe84562ce24063ba439eef80389372da4e90b148ce981db5bd1c9540fa8
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597896
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 06f5d371c75647be24213aed2ed1d9b452911862f6109b66424f5b7cb7c59024
Median time: 1701597895
Difficulty: 4.656542373906925e-10
Confirmations: 2073
Chainwork: 0000000000000000000000000000000000000000000000000000000000000158
Bits: 207fffff