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: 197
Hash: 578d5ca0a9f4621e27c23c6fb569a497e1e432f257a5032bf65065918fdf174d
Previous block: 41b6dec361192a4359f030b938217e3ec70062855f5aa43311a1a79c9330339e
Next block: 096cd756799aa42a42b8f0b44bc0422864e6898eb889e1f0c376fc35f4eab468
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597900
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 5afbc2886a299f31be26efb4c80c73b76c0d45677ba09ab77566eb25d0dac2d8
Median time: 1701597899
Difficulty: 4.656542373906925e-10
Confirmations: 2047
Chainwork: 000000000000000000000000000000000000000000000000000000000000018c
Bits: 207fffff