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: 147
Hash: 18942660f1cf74026b108d1eff9761a09649f02d1449ec853686db7acb989752
Previous block: 0307e1e18187f72cfdc1d75b4675cfa79d121432edf0eed6d30f5973fd81448f
Next block: 55d1c44f60e1051a147a4c647a64f37bb39319362f9f05c812ff09376d150be1
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597892
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 88bd5f4db79ba507e1d291fbe6fe9a846eda1b86dcf46705327eb7490cc55556
Median time: 1701597891
Difficulty: 4.656542373906925e-10
Confirmations: 2097
Chainwork: 0000000000000000000000000000000000000000000000000000000000000128
Bits: 207fffff