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: 138
Hash: 4691d19cf4abb76a0bfec876a12ffc176c222292b3062b43206b2a5ea80d011f
Previous block: 6ef138b4a316fe1d3895ce10fc2b8011ccfd528536bc0c158a17eed421e3403a
Next block: 6005086660605e00952eb22dc02b194368943d806fece987e5fb3f37c002551f
Weight: 872
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597890
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 900efb1d71a4b2fb66888d52eb97ffa3b68f50e5aff1958ebd4b3e94fe6aa220
Median time: 1701597889
Difficulty: 4.656542373906925e-10
Confirmations: 2106
Chainwork: 0000000000000000000000000000000000000000000000000000000000000116
Bits: 207fffff