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: 856
Hash: 7b95eb04fae119110d01600be5e51136264551d6f0f0c191455d41b53dc975a6
Previous block: 68a6176c62c14e3a24a36c2ae2dc38959027a9733e8b3b5d4bb96df9014a6eb2
Next block: 73995f8080edc288721fa4f8bebe118f00451bb0ef04707cad7c30f639dd7bb0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857811
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0e4a677daf53c98da986b8a561de4b41dfb9a501393c63c6e435ee638f49ae71
Median time: 1707857810
Difficulty: 4.656542373906925e-10
Confirmations: 1388
Chainwork: 00000000000000000000000000000000000000000000000000000000000006b2
Bits: 207fffff