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: 1442
Hash: 4579c6e430933083eb9501be64a5bdb5cf1568defb0e838569a8e1a31470ea92
Previous block: 7d4be52a8c2b428e501f5f71a93eac5811548c5bc5e4dc7278644a76fd740627
Next block: 17ccb850ccaf7ca4d703c56dac0e5a62eb5f62b0dd1545cad50e78e815ffbbe8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697648
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 21e90d78ac6175548a8ba8325db61ff3007bc97a18d513b7484d6498615a5a1c
Median time: 1718697647
Difficulty: 4.656542373906925e-10
Confirmations: 802
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b46
Bits: 207fffff