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: 172
Hash: 70dfdbe84562ce24063ba439eef80389372da4e90b148ce981db5bd1c9540fa8
Previous block: 6ca2ef4bd0bfcbfd5c2c9dc2f70e3bfdc65b0c94e41512e93e6aa1b0dd224f37
Next block: 3fa06d77b28bbc869a03ad505f84ee9beac730861aedf9f320916f9781125fac
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597896
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 588ab5a96aeedad66833198a01e0c44964956879493306be59dc6c4e4674acf6
Median time: 1701597895
Difficulty: 4.656542373906925e-10
Confirmations: 2072
Chainwork: 000000000000000000000000000000000000000000000000000000000000015a
Bits: 207fffff