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: 1920
Hash: 5bb1eb2aa2d304b3b64510cced4b9c763abd30853ef8b9ce24bdf257dbd61920
Previous block: 2cab4dfaf1321cf4ca43b001b5a391819d4166599d4d339f955e65ff9ff97431
Next block: 0aae46f309e1573fec51f81b96cd2d4edcf934bae2aa4a5ed703e39ac6e972aa
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159243
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: adbce23cf8a7c1218ab2931c2e99e6759e794fe68ee3410b0eecd1f53223d687
Median time: 1719159242
Difficulty: 4.656542373906925e-10
Confirmations: 324
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f02
Bits: 207fffff