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: 1870
Hash: 08fb389fb4affff25f90cad25d8246f19b9c1d00708bfa45d14ad4c8249da9fb
Previous block: 68cbff97f61684a4b9f9924375df4c27b75dc430b27ec2ac97d5ccb2f4c52792
Next block: 43411b14545cf306c9b5fbc1b894b85a5a006e3aef412449759873410e55710c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159235
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: b48fa7568c8e44842ca65cbc700b359f483882bf4efa197d67410fefcb955e1b
Median time: 1719159234
Difficulty: 4.656542373906925e-10
Confirmations: 374
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e9e
Bits: 207fffff