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: 2423
Hash: 480cd43ffd81a2424158220e3d7ebb5003b0a5b773d9f47c51675b6da2859f68
Previous block: 4d560329d472f3750f602433e51464c49f7f7f0025ea5e085cf70e319dee11f9
Next block: 158826563a39274fc61e156bdff5353569a628be172d3eae01527bcee8e76160
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847290
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 78208e60403560d8782a34b68e7111a1ed5d395bf0b575ec7b42540ebf552837
Median time: 1743847290
Difficulty: 4.656542373906925e-10
Confirmations: 220
Chainwork: 00000000000000000000000000000000000000000000000000000000000012f0
Bits: 207fffff