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: 1412
Hash: 0089a61b540a2624eb021d5d8cd056c8c80226e9b2b62b647ba45166091d7f01
Previous block: 35925950bdafa3bc9c3ec45d1ea06ebf4e332e0bfafb1a7d68d58345880c7f10
Next block: 750135505a40a44e785dbb2adaee45a4c34c8a6dcc1ddf27fff02ad089cc4f00
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697643
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 856d76a46e0c063b56043fd7a8d9f125d0eefe28575dee5416865b6032977125
Median time: 1718697642
Difficulty: 4.656542373906925e-10
Confirmations: 832
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b0a
Bits: 207fffff