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: 1941
Hash: 44cd98ddee6e182603616031ad0b16b64c7b89d2c180a383b3032451d9d70955
Previous block: 513f25dca0db1f0cae4dd2de67a0d8bf997296d6b2db647b3b84714726314a8a
Next block: 2054883f57085de98d7c2baca75f63a7fd753ca74328ef3319e10880c4dba171
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159247
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a35f061574aa4b057e8dcb809c6b00f4b14dabfd74a8e1ceefcc16a706d2bff3
Median time: 1719159246
Difficulty: 4.656542373906925e-10
Confirmations: 303
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f2c
Bits: 207fffff