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: 1718
Hash: 1d55f72febd2a239691ad906ad337d9c73e2a8373ad43ae76f27d717e87247ee
Previous block: 382c8df48675a22300b1aca545313be9f2a9d505c8bb4f9b03c78177bd2215c6
Next block: 169a9b1b383f026cb3f5639b47abb8572ee986f1306150ebc6d297d954991e03
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159210
Stripped size: 218
Size: 254
Nonce: 6
Merkle root: 2bfe40fea603e55328a174409fa19f98f1133f2253d6408b8e17cf92d10f1462
Median time: 1719159209
Difficulty: 4.656542373906925e-10
Confirmations: 526
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d6e
Bits: 207fffff