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: 997
Hash: 62845ed1d565900d599e717e6773b9f1b53462f68c6d9cbbff39cfb2b1f6d935
Previous block: 12eab32668dd962ba578416fc53b764ef31f3a27e14b01bd3dbceba0ed865aa4
Next block: 05f63a2ea2b42ed0cefccfba523f135469a42728305929200f770762fc025c8f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857835
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: f2d1e182e116af0d6accbbe5ca126fdf0c42b0f13acb2cc3bb3b1f0e4381ad90
Median time: 1707857834
Difficulty: 4.656542373906925e-10
Confirmations: 1247
Chainwork: 00000000000000000000000000000000000000000000000000000000000007cc
Bits: 207fffff