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: 1940
Hash: 513f25dca0db1f0cae4dd2de67a0d8bf997296d6b2db647b3b84714726314a8a
Previous block: 5cda7e3bab56d7de10e173db8d2d735457666732c920f12f19f8279802fc0136
Next block: 44cd98ddee6e182603616031ad0b16b64c7b89d2c180a383b3032451d9d70955
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159247
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 1496099a740b6e88d3808c97d871a4f69f4e310fac4b947d62428fe6301c5887
Median time: 1719159246
Difficulty: 4.656542373906925e-10
Confirmations: 304
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f2a
Bits: 207fffff